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{"id": "OSV:DSA-4906-1", "bulletinFamily": "software", "title": "chromium - security update", "description": "\nSeveral vulnerabilities have been discovered in the chromium web browser.\n\n\n* [CVE-2021-21201](https://security-tracker.debian.org/tracker/CVE-2021-21201)\nGengming Liu and Jianyu Chen discovered a use-after-free issue.\n* [CVE-2021-21202](https://security-tracker.debian.org/tracker/CVE-2021-21202)\nDavid Erceg discovered a use-after-free issue in extensions.\n* [CVE-2021-21203](https://security-tracker.debian.org/tracker/CVE-2021-21203)\nasnine discovered a use-after-free issue in Blink/Webkit.\n* [CVE-2021-21204](https://security-tracker.debian.org/tracker/CVE-2021-21204)\nTsai-Simek, Jeanette Ulloa, and Emily Voigtlander discovered a\n use-after-free issue in Blink/Webkit.\n* [CVE-2021-21205](https://security-tracker.debian.org/tracker/CVE-2021-21205)\nAlison Huffman discovered a policy enforcement error.\n* [CVE-2021-21207](https://security-tracker.debian.org/tracker/CVE-2021-21207)\nkoocola and Nan Wang discovered a use-after-free in the indexed database.\n* [CVE-2021-21208](https://security-tracker.debian.org/tracker/CVE-2021-21208)\nAhmed Elsobky discovered a data validation error in the QR code scanner.\n* [CVE-2021-21209](https://security-tracker.debian.org/tracker/CVE-2021-21209)\nTom Van Goethem discovered an implementation error in the Storage API.\n* [CVE-2021-21210](https://security-tracker.debian.org/tracker/CVE-2021-21210)\n@bananabr discovered an error in the networking implementation.\n* [CVE-2021-21211](https://security-tracker.debian.org/tracker/CVE-2021-21211)\nAkash Labade discovered an error in the navigation implementation.\n* [CVE-2021-21212](https://security-tracker.debian.org/tracker/CVE-2021-21212)\nHugo Hue and Sze Yui Chau discovered an error in the network configuration\n user interface.\n* [CVE-2021-21213](https://security-tracker.debian.org/tracker/CVE-2021-21213)\nraven discovered a use-after-free issue in the WebMIDI implementation.\n* [CVE-2021-21214](https://security-tracker.debian.org/tracker/CVE-2021-21214)\nA use-after-free issue was discovered in the networking implementation.\n* [CVE-2021-21215](https://security-tracker.debian.org/tracker/CVE-2021-21215)\nAbdulrahman Alqabandi discovered an error in the Autofill feature.\n* [CVE-2021-21216](https://security-tracker.debian.org/tracker/CVE-2021-21216)\nAbdulrahman Alqabandi discovered an error in the Autofill feature.\n* [CVE-2021-21217](https://security-tracker.debian.org/tracker/CVE-2021-21217)\nZhou Aiting discovered use of uninitialized memory in the pdfium library.\n* [CVE-2021-21218](https://security-tracker.debian.org/tracker/CVE-2021-21218)\nZhou Aiting discovered use of uninitialized memory in the pdfium library.\n* [CVE-2021-21219](https://security-tracker.debian.org/tracker/CVE-2021-21219)\nZhou Aiting discovered use of uninitialized memory in the pdfium library.\n* [CVE-2021-21221](https://security-tracker.debian.org/tracker/CVE-2021-21221)\nGuang Gong discovered insufficient validation of untrusted input.\n* [CVE-2021-21222](https://security-tracker.debian.org/tracker/CVE-2021-21222)\nGuang Gong discovered a buffer overflow issue in the v8 javascript\n library.\n* [CVE-2021-21223](https://security-tracker.debian.org/tracker/CVE-2021-21223)\nGuang Gong discovered an integer overflow issue.\n* [CVE-2021-21224](https://security-tracker.debian.org/tracker/CVE-2021-21224)\nJose Martinez discovered a type error in the v8 javascript library.\n* [CVE-2021-21225](https://security-tracker.debian.org/tracker/CVE-2021-21225)\nBrendon Tiszka discovered an out-of-bounds memory access issue in the v8\n javascript library.\n* [CVE-2021-21226](https://security-tracker.debian.org/tracker/CVE-2021-21226)\nBrendon Tiszka discovered a use-after-free issue in the networking\n implementation.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 90.0.4430.85-1~deb10u1.\n\n\nWe recommend that you upgrade your chromium packages.\n\n\nFor the detailed security status of chromium please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/chromium](https://security-tracker.debian.org/tracker/chromium)\n\n\n", "published": "2021-04-27T00:00:00", "modified": "2022-07-21T05:50:45", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}, "cvss2": {"acInsufInfo": false, "cvssV2": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": true}, "cvss3": {"cvssV3": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.6, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 6.0}, "href": "https://osv.dev/vulnerability/DSA-4906-1", "reporter": "Google", "references": ["https://www.debian.org/security/2021/dsa-4906"], "cvelist": ["CVE-2021-21211", "CVE-2021-21208", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21214", "CVE-2021-21202", "CVE-2021-21201", "CVE-2021-21215", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21207", "CVE-2021-21203", "CVE-2021-21205", "CVE-2021-21217", "CVE-2021-21226", "CVE-2021-21204", "CVE-2021-21223", "CVE-2021-21216", "CVE-2021-21209", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21210", "CVE-2021-21224", "CVE-2021-21225"], "immutableFields": [], "type": "osv", "lastseen": "2022-07-21T08:22:18", "edition": 1, "viewCount": 1, "enchantments": {"dependencies": {"references": [{"idList": ["AKB:21C170FF-C7C6-4BFB-8AED-613970EDA44C", "AKB:160D34D9-2175-4B27-87F8-0CED51121F50"], "type": "attackerkb"}, {"idList": ["DEBIAN:DSA-4906-1:4BE22"], "type": "debian"}, {"idList": ["GCSA-273411975827701477", "GCSA-1247606144415232205"], "type": "chrome"}, {"idList": ["GLSA-202104-08"], "type": "gentoo"}, {"idList": ["MALWAREBYTES:390E663F11CA04293C83488A40CB3A8A", "MALWAREBYTES:3322D6B92554507E3E44D06E2BA5E174"], "type": "malwarebytes"}, {"idList": ["KLA12147", "KLA12145", "KLA12144", "KLA12153"], "type": "kaspersky"}, {"idList": ["CPAI-2021-0529", "CPAI-2021-0952"], "type": "checkpoint_advisories"}, {"idList": ["RH:CVE-2021-21204", "RH:CVE-2021-21209", "RH:CVE-2021-21216"], "type": "redhatcve"}, {"idList": ["MS:CVE-2021-21204", "MS:CVE-2021-21208", "MS:CVE-2021-21212", "MS:CVE-2021-21217", "MS:CVE-2021-21219", "MS:CVE-2021-21216", "MS:CVE-2021-21205", "MS:CVE-2021-21203", "MS:CVE-2021-21214", "MS:CVE-2021-21209", "MS:CVE-2021-21201", "MS:CVE-2021-21210", "MS:CVE-2021-21225", "MS:CVE-2021-21221", "MS:CVE-2021-21202", "MS:CVE-2021-21207", "MS:CVE-2021-21222", "MS:CVE-2021-21213", "MS:CVE-2021-21224", "MS:CVE-2021-21218", "MS:CVE-2021-21211", "MS:CVE-2021-21215", "MS:CVE-2021-21223", "MS:CVE-2021-21226"], "type": "mscve"}, {"idList": ["ASA-202104-5", "ASA-202104-7", "ASA-202104-2"], "type": "archlinux"}, {"idList": ["GITHUB:D9472F716C46C02F88677DBAD0EEA334"], "type": "github"}, {"idList": ["CVE-2021-21211", "CVE-2021-21208", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21214", "CVE-2021-21202", "CVE-2021-21201", "CVE-2021-21215", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21207", "CVE-2021-21203", "CVE-2021-21205", "CVE-2021-21217", "CVE-2021-21226", "CVE-2021-21204", "CVE-2021-21223", "CVE-2021-21216", "CVE-2021-21209", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21210", "CVE-2021-21224", "CVE-2021-21225"], "type": "cve"}, {"idList": ["CAE25BF5-2DB9-5000-8FF9-CC2EAA626ECE"], "type": "githubexploit"}, {"idList": ["DEBIANCVE:CVE-2021-21223", "DEBIANCVE:CVE-2021-21226", "DEBIANCVE:CVE-2021-21216", "DEBIANCVE:CVE-2021-21203", "DEBIANCVE:CVE-2021-21214", "DEBIANCVE:CVE-2021-21209", "DEBIANCVE:CVE-2021-21205", "DEBIANCVE:CVE-2021-21201", "DEBIANCVE:CVE-2021-21219", "DEBIANCVE:CVE-2021-21202", "DEBIANCVE:CVE-2021-21224", "DEBIANCVE:CVE-2021-21221", "DEBIANCVE:CVE-2021-21217", "DEBIANCVE:CVE-2021-21204", "DEBIANCVE:CVE-2021-21211", "DEBIANCVE:CVE-2021-21225", "DEBIANCVE:CVE-2021-21222", "DEBIANCVE:CVE-2021-21218", "DEBIANCVE:CVE-2021-21213", "DEBIANCVE:CVE-2021-21210", "DEBIANCVE:CVE-2021-21208", "DEBIANCVE:CVE-2021-21212", "DEBIANCVE:CVE-2021-21207", "DEBIANCVE:CVE-2021-21215"], "type": "debiancve"}, {"idList": ["674ED047-BE0A-11EB-B927-3065EC8FD3EC", "F3D86439-9DEF-11EB-97A0-E09467587C17", "CB13A765-A277-11EB-97A0-E09467587C17"], "type": "freebsd"}, {"idList": ["OPENSUSE-2021-825.NASL", "701339.PASL", "701347.PASL", "MICROSOFT_EDGE_CHROMIUM_90_0_818_39.NASL", "GENTOO_GLSA-202104-08.NASL", "GOOGLE_CHROME_90_0_4430_72.NASL", "FREEBSD_PKG_F3D864399DEF11EB97A0E09467587C17.NASL", "MICROSOFT_EDGE_CHROMIUM_90_0_818_46.NASL", "FREEBSD_PKG_CB13A765A27711EB97A0E09467587C17.NASL", "DEBIAN_DSA-4906.NASL", "MACOSX_GOOGLE_CHROME_91_0_4472_77.NASL", "OPENSUSE-2021-629.NASL", "MACOSX_GOOGLE_CHROME_90_0_4430_85.NASL", "GOOGLE_CHROME_91_0_4472_77.NASL", "701328.PASL", "OPENSUSE-2021-712.NASL", "GOOGLE_CHROME_90_0_4430_85.NASL", "FREEBSD_PKG_674ED047BE0A11EBB9273065EC8FD3EC.NASL", "MACOSX_GOOGLE_CHROME_90_0_4430_72.NASL"], "type": "nessus"}, {"idList": ["THN:1A836FDDE57334BC4DAFA65E6DFA02E4", "THN:4CC79A3CEFEDEB0DC9CF87C5B9035209", "THN:7D7C05739ECD847B8CDEEAF930C51BF8", "THN:C736174C6B0ADC38AA88BC58F30271DA", "THN:FF8DAEC0AE0DDAE827D57407C51BE992", "THN:50D7C51FE6D69FC5DB5B37402AD0E412", "THN:B7217784F9D53002315C9C43CCC73766", "THN:1DDE95EA33D4D9F304973569FC787451", "THN:6A9CD6F085628D08978727C0FF597535"], "type": "thn"}, {"idList": ["QUALYSBLOG:BC22CE22A3E70823D5F0E944CBD5CE4A", "QUALYSBLOG:0082A77BD8EFFF48B406D107FEFD0DD3"], "type": "qualysblog"}, {"idList": ["OPENSUSE-SU-2021:0825-1", "OPENSUSE-SU-2021:0629-1", "OPENSUSE-SU-2021:0712-1", "OPENSUSE-SU-2021:0840-1"], "type": "suse"}, {"idList": ["SECURELIST:8E9198BF0E389572981DD1AA05D0708A"], "type": "securelist"}, {"idList": ["THREATPOST:3697F9293A6DFF6CD5927E9E68FF488A", "THREATPOST:45B63C766965F5748AEC30DE709C8003", "THREATPOST:88DD5812D3C8652E304F32507E4F68DD", "THREATPOST:61CC1EAC83030C2B053946454FE77AC3"], "type": "threatpost"}, {"idList": ["VERACODE:30083", "VERACODE:30085", "VERACODE:30146", "VERACODE:30145", "VERACODE:30077", "VERACODE:30075", "VERACODE:30147", "VERACODE:30068", "VERACODE:30084", "VERACODE:30073", "VERACODE:30076", "VERACODE:30074", "VERACODE:30071", "VERACODE:30144", "VERACODE:30065", "VERACODE:30082", "VERACODE:30078", "VERACODE:30143", "VERACODE:30070", "VERACODE:30081", "VERACODE:30069", "VERACODE:30072", "VERACODE:30079", "VERACODE:30067"], "type": "veracode"}, {"idList": ["UB:CVE-2021-21224", "UB:CVE-2021-21203", "UB:CVE-2021-21207", "UB:CVE-2021-21221", "UB:CVE-2021-21201", "UB:CVE-2021-21213", "UB:CVE-2021-21211", "UB:CVE-2021-21205", "UB:CVE-2021-21218", "UB:CVE-2021-21210", "UB:CVE-2021-21226", "UB:CVE-2021-21202", "UB:CVE-2021-21225", "UB:CVE-2021-21214", "UB:CVE-2021-21216", "UB:CVE-2021-21212", "UB:CVE-2021-21223", "UB:CVE-2021-21215", "UB:CVE-2021-21222", "UB:CVE-2021-21219", "UB:CVE-2021-21208", "UB:CVE-2021-21209", "UB:CVE-2021-21204", "UB:CVE-2021-21217"], "type": "ubuntucve"}, {"idList": ["FEDORA:B4C4A30D8539", "FEDORA:993DD30E4796", "FEDORA:D63AA304E89C"], "type": "fedora"}]}, "score": {"value": 0.9, "vector": "NONE"}, "epss": [{"cve": "CVE-2021-21211", "epss": "0.002120000", "percentile": "0.573330000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21208", "epss": "0.001780000", "percentile": "0.532230000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21218", "epss": "0.001080000", "percentile": "0.420510000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21219", "epss": "0.001080000", "percentile": "0.420510000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21214", "epss": "0.002810000", "percentile": "0.635480000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21202", "epss": "0.000750000", "percentile": "0.304390000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21201", "epss": "0.002810000", "percentile": "0.635530000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21215", "epss": "0.027920000", "percentile": "0.889990000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21212", "epss": "0.002720000", "percentile": "0.628480000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21213", "epss": "0.002520000", "percentile": "0.613510000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21207", "epss": "0.000750000", "percentile": "0.304390000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21203", "epss": "0.003970000", "percentile": "0.693450000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21205", "epss": "0.002990000", "percentile": "0.646830000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21217", "epss": "0.004260000", "percentile": "0.703670000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21226", "epss": "0.003830000", "percentile": "0.688070000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21204", "epss": "0.003970000", "percentile": "0.693450000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21223", "epss": "0.005430000", "percentile": "0.738420000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21216", "epss": "0.707320000", "percentile": "0.974460000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21209", "epss": "0.002120000", "percentile": "0.573330000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21221", "epss": "0.004060000", "percentile": "0.696910000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21222", "epss": "0.003280000", "percentile": "0.662970000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21210", "epss": "0.002870000", "percentile": "0.639090000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21224", "epss": "0.969350000", "percentile": "0.995030000", "modified": "2023-03-20"}, {"cve": "CVE-2021-21225", "epss": "0.002960000", "percentile": "0.645260000", "modified": "2023-03-20"}], "vulnersScore": 0.9}, "_state": {"score": 1659992473, "dependencies": 1659988328, "affected_software_major_version": 1666703109, "epss": 1679338714}, "_internal": {"score_hash": "9612202b8d1ed162d8e3e49976ce3b30"}, "affectedSoftware": [{"name": "chromium", "operator": "eq", "version": "78.0.3904.108-1"}, {"name": "chromium", "operator": "eq", "version": "84.0.4147.105-1"}, {"name": "chromium", "operator": "eq", "version": "79.0.3945.130-1"}, {"name": "chromium", "operator": "eq", "version": "83.0.4103.83-1"}, {"name": "chromium", "operator": "eq", "version": "73.0.3683.75-1"}, {"name": "chromium", "operator": "eq", "version": "76.0.3809.87-2"}, {"name": "chromium", "operator": "eq", "version": "89.0.4389.82-1"}, {"name": "chromium", "operator": "eq", "version": "79.0.3945.130-2"}, {"name": "chromium", "operator": "eq", "version": "76.0.3809.100-1~deb10u1"}, {"name": "chromium", "operator": "eq", "version": "78.0.3904.97-1~deb10u1"}, {"name": "chromium", "operator": "eq", "version": "78.0.3904.108-1~deb10u1"}, {"name": "chromium", "operator": "eq", "version": "79.0.3945.79-1"}, {"name": "chromium", "operator": "eq", "version": "88.0.4324.146-1"}, {"name": "chromium", "operator": "eq", "version": "79.0.3945.130-1~deb10u1"}, {"name": "chromium", "operator": "eq", "version": "81.0.4044.92-1"}, {"name": "chromium", "operator": "eq", "version": "74.0.3729.108-1"}, {"name": "chromium", "operator": "eq", "version": "87.0.4280.88-0.2"}, {"name": "chromium", "operator": "eq", "version": "76.0.3809.71-1"}, {"name": "chromium", "operator": "eq", "version": 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Reported by asnine on 2021-03-24\n\n- [1189926] High CVE-2021-21204: Use after free in Blink. Reported by Chelse Tsai-Simek, Jeanette Ulloa, and Emily Voigtlander of Seesaw on 2021-03-19\n\n- [1165654] High CVE-2021-21205: Insufficient policy enforcement in navigation. Reported by Alison Huffman, Microsoft Browser Vulnerability Research on 2021-01-12\n\n- [1195333] High CVE-2021-21221: Insufficient validation of untrusted input in Mojo. Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-04-02\n\n- [1185732] Medium CVE-2021-21207: Use after free in IndexedDB.\nReported by koocola (@alo_cook) and Nan Wang (@eternalsakura13) of 360 Alpha Lab on 2021-03-08\n\n- [1039539] Medium CVE-2021-21208: Insufficient data validation in QR scanner. Reported by Ahmed Elsobky (@0xsobky) on 2020-01-07\n\n- [1143526] Medium CVE-2021-21209: Inappropriate implementation in storage. 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use-after-free issue in extensions.\n\nCVE-2021-21203\n\n asnine discovered a use-after-free issue in Blink/Webkit.\n\nCVE-2021-21204\n\n Tsai-Simek, Jeanette Ulloa, and Emily Voigtlander discovered a\n use-after-free issue in Blink/Webkit.\n\nCVE-2021-21205\n\n Alison Huffman discovered a policy enforcement error.\n\nCVE-2021-21207\n\n koocola and Nan Wang discovered a use-after-free in the indexed database.\n\nCVE-2021-21208\n\n Ahmed Elsobky discovered a data validation error in the QR code scanner.\n\nCVE-2021-21209\n\n Tom Van Goethem discovered an implementation error in the Storage API.\n\nCVE-2021-21210\n\n @bananabr discovered an error in the networking implementation.\n\nCVE-2021-21211\n\n Akash Labade discovered an error in the navigation implementation.\n\nCVE-2021-21212\n\n Hugo Hue and Sze Yui Chau discovered an error in the network configuration\n user interface.\n\nCVE-2021-21213\n\n raven discovered a use-after-free issue in the WebMIDI implementation.\n\nCVE-2021-21214\n\n A use-after-free issue was discovered in the networking implementation.\n\nCVE-2021-21215\n\n Abdulrahman Alqabandi discovered an error in the Autofill feature.\n\nCVE-2021-21216\n\n Abdulrahman Alqabandi discovered an error in the Autofill feature.\n\nCVE-2021-21217\n\n Zhou Aiting discovered use of uninitialized memory in the pdfium library.\n\nCVE-2021-21218\n\n Zhou Aiting discovered use of uninitialized memory in the pdfium library.\n\nCVE-2021-21219\n\n Zhou Aiting discovered use of uninitialized memory in the pdfium library.\n\nCVE-2021-21221\n\n Guang Gong discovered insufficient validation of untrusted input.\n\nCVE-2021-21222\n\n Guang Gong discovered a buffer overflow issue in the v8 javascript\n library.\n\nCVE-2021-21223\n\n Guang Gong discovered an integer overflow issue.\n\nCVE-2021-21224\n\n Jose Martinez discovered a type error in the v8 javascript library.\n\nCVE-2021-21225\n\n Brendon Tiszka discovered an out-of-bounds memory access issue in the v8\n javascript library.\n\nCVE-2021-21226\n\n Brendon Tiszka discovered a use-after-free issue in the networking\n implementation.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 90.0.4430.85-1~deb10u1.\n\nWe recommend that you upgrade your chromium packages.\n\nFor the detailed security status of chromium please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/chromium\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-28T01:49:06", "type": "debian", "title": "[SECURITY] [DSA 4906-1] chromium security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-04-28T01:49:06", "id": "DEBIAN:DSA-4906-1:4BE22", "href": "https://lists.debian.org/debian-security-announce/2021/msg00087.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "chrome": [{"lastseen": "2021-12-30T22:31:19", "description": "The Chrome team is delighted to announce the promotion of Chrome 90 to the stable channel for Windows, Mac and Linux. This will roll out over the coming days/weeks.\n\n\n\nChrome 90.0.4430.72 contains a number of fixes and improvements -- a list of changes is available in the[ log](<https://chromium.googlesource.com/chromium/src/+log/89.0.4389.128..90.0.4430.72?pretty=fuller&n=10000>). Watch out for upcoming[ Chrome](<https://chrome.blogspot.com/>) and[ Chromium](<https://blog.chromium.org/>) blog posts about new features and big efforts delivered in 90.\n\n\n\n\nSecurity Fixes and Rewards\n\nNote: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven&#x27;t yet fixed.\n\n\n\n\nThis update includes [37](<https://bugs.chromium.org/p/chromium/issues/list?can=1&q=type%3Abug-security+os%3DAndroid%2Cios%2Clinux%2Cmac%2Cwindows%2Call%2Cchrome+label%3ARelease-0-M90>) security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the [Chrome Security Page](<https://sites.google.com/a/chromium.org/dev/Home/chromium-security>) for more information.\n\n\n\n\n[$20000][[1025683](<https://crbug.com/1025683>)] High CVE-2021-21201: Use after free in permissions. Reported by Gengming Liu and Jianyu Chen when working at Tencent KeenLab on 2019-11-18\n\n[$10000][[1188889](<https://crbug.com/1188889>)] High CVE-2021-21202: Use after free in extensions. Reported by David Erceg on 2021-03-16\n\n[$5000][[1192054](<https://crbug.com/1192054>)] High CVE-2021-21203: Use after free in Blink. Reported by asnine on 2021-03-24\n\n[$1000][[1189926](<https://crbug.com/1189926>)] High CVE-2021-21204: Use after free in Blink. Reported by Chelse Tsai-Simek, Jeanette Ulloa, and Emily Voigtlander of Seesaw on 2021-03-19\n\n[$TBD][[1165654](<https://crbug.com/1165654>)] High CVE-2021-21205: Insufficient policy enforcement in navigation. Reported by Alison Huffman, Microsoft Browser Vulnerability Research on 2021-01-12\n\n[$TBD][[1195333](<https://crbug.com/1195333>)] High CVE-2021-21221: Insufficient validation of untrusted input in Mojo. Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-04-02\n\n[$5000][[1185732](<https://crbug.com/1185732>)] Medium CVE-2021-21207: Use after free in IndexedDB. Reported by koocola (@alo_cook) and Nan Wang (@eternalsakura13) of 360 Alpha Lab on 2021-03-08\n\n[$3000][[1039539](<https://crbug.com/1039539>)] Medium CVE-2021-21208: Insufficient data validation in QR scanner. Reported by Ahmed Elsobky (@0xsobky) on 2020-01-07\n\n[$3000][[1143526](<https://crbug.com/1143526>)] Medium CVE-2021-21209: Inappropriate implementation in storage. Reported by Tom Van Goethem (@tomvangoethem) on 2020-10-29\n\n[$3000][[1184562](<https://crbug.com/1184562>)] Medium CVE-2021-21210: Inappropriate implementation in Network. Reported by @bananabr on 2021-03-04\n\n[$2000][[1103119](<https://crbug.com/1103119>)] Medium CVE-2021-21211: Inappropriate implementation in Navigation. Reported by Akash Labade (m0ns7er) on 2020-07-08\n\n[$500][[1145024](<https://crbug.com/1145024>)] Medium CVE-2021-21212: Incorrect security UI in Network Config UI. Reported by Hugo Hue and Sze Yiu Chau of the Chinese University of Hong Kong on 2020-11-03\n\n[$N/A][[1161806](<https://crbug.com/1161806>)] Medium CVE-2021-21213: Use after free in WebMIDI. Reported by raven (@raid_akame) on 2020-12-25\n\n[$TBD][[1170148](<https://crbug.com/1170148>)] Medium CVE-2021-21214: Use after free in Network API. Reported by Anonymous on 2021-01-24\n\n[$TBD][[1172533](<https://crbug.com/1172533>)] Medium CVE-2021-21215: Inappropriate implementation in Autofill. Reported by Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-01-30\n\n[$TBD][[1173297](<https://crbug.com/1173297>)] Medium CVE-2021-21216: Inappropriate implementation in Autofill. Reported by Abdulrahman Alqabandi, Microsoft Browser Vulnerability Research on 2021-02-02\n\n[$500][[1166462](<https://crbug.com/1166462>)] Low CVE-2021-21217: Uninitialized Use in PDFium. Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on 2021-01-14\n\n[$500][[1166478](<https://crbug.com/1166478>)] Low CVE-2021-21218: Uninitialized Use in PDFium. Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on 2021-01-14\n\n[$500][[1166972](<https://crbug.com/1166972>)] Low CVE-2021-21219: Uninitialized Use in PDFium. Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on 2021-01-15\n\n\n\n\nWe would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel. \n\nAs usual, our ongoing internal security work was responsible for a wide range of fixes:\n\n * [[1198709](<https://crbug.com/1198709>)] Various fixes from internal audits, fuzzing and other initiatives\n\n\n\n\nMany of our security bugs are detected using [AddressSanitizer](<https://code.google.com/p/address-sanitizer/wiki/AddressSanitizer>), [MemorySanitizer](<https://code.google.com/p/memory-sanitizer/wiki/MemorySanitizer>), [UndefinedBehaviorSanitizer](<https://www.chromium.org/developers/testing/undefinedbehaviorsanitizer>), [Control Flow Integrity](<https://sites.google.com/a/chromium.org/dev/developers/testing/control-flow-integrity>), [libFuzzer](<https://sites.google.com/a/chromium.org/dev/developers/testing/libfuzzer>), or [AFL](<https://github.com/google/afl>).\n\n\n\n\n\n\n\nInterested in switching release channels? Find out how [here](<https://www.chromium.org/getting-involved/dev-channel>). If you find a new issue, please let us know by [filing a bug](<https://crbug.com/>). The [community help forum](<https://productforums.google.com/forum/#!forum/chrome>) is also a great place to reach out for help or learn about common issues.\n\n\n\n\n\nThank you,\n\n\n\n\nSrinivas Sista", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-14T00:00:00", "type": "chrome", "title": "Stable Channel Update for Desktop", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221"], "modified": "2021-04-14T00:00:00", "id": "GCSA-273411975827701477", "href": "https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-12-30T22:31:19", "description": "The Stable channel has been updated to 90.0.4430.85 for Windows, Mac and Linux which will roll out over the coming days/weeks.\n\n\nA full list of changes in this build is available in the [log](<https://chromium.googlesource.com/chromium/src/+log/90.0.4430.72..90.0.4430.85?pretty=fuller&n=10000>). Interested in switching release channels? Find out how [here](<https://www.chromium.org/getting-involved/dev-channel>). If you find a new issue, please let us know by [filing a bug](<https://crbug.com/>). The [community help forum](<https://productforums.google.com/forum/#!forum/chrome>) is also a great place to reach out for help or learn about common issues.\n\n\n\n\n**Security Fixes and Rewards**\n\nNote: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven&#x27;t yet fixed.\n\n\n\n\nThis update includes [7](<https://bugs.chromium.org/p/chromium/issues/list?can=1&q=type%3Abug-security+os%3DAndroid%2Cios%2Clinux%2Cmac%2Cwindows%2Call%2Cchrome+label%3ARelease-1-M90>) security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the [Chrome Security Page](<https://sites.google.com/a/chromium.org/dev/Home/chromium-security>) for more information.\n\n** \n**\n\n[$TBD][[1194046](<https://crbug.com/1194046>)] High CVE-2021-21222: Heap buffer overflow in V8. Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-03-30\n\n[$TBD][[1195308](<https://crbug.com/1195308>)] High CVE-2021-21223: Integer overflow in Mojo. Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-04-02\n\n[$TBD][[1195777](<https://crbug.com/1195777>)] High CVE-2021-21224: Type Confusion in V8. Reported by Jose Martinez (tr0y4) from VerSprite Inc. on 2021-04-05\n\n[$22000 + $22000][[1195977](<https://crbug.com/1195977>)] High CVE-2021-21225: Out of bounds memory access in V8. Reported by Brendon Tiszka (@btiszka) supporting the EFF on 2021-04-05\n\n[$27000 + $27000][[1197904](<https://crbug.com/1197904>)] High CVE-2021-21226: Use after free in navigation. Reported by Brendon Tiszka (@btiszka) supporting the EFF on 2021-04-11\n\n** \n**\n\nWe would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.\n\n** \n**\n\nGoogle is aware of reports that exploits for CVE-2021-21224 exist in the wild. \n\nAs usual, our ongoing internal security work was responsible for a wide range of fixes:\n\n * [[1200824](<https://crbug.com/1200824>)] Various fixes from internal audits, fuzzing and other initiatives\n\n\n\n\nMany of our security bugs are detected using [AddressSanitizer](<https://code.google.com/p/address-sanitizer/wiki/AddressSanitizer>), [MemorySanitizer](<https://code.google.com/p/memory-sanitizer/wiki/MemorySanitizer>), [UndefinedBehaviorSanitizer](<https://www.chromium.org/developers/testing/undefinedbehaviorsanitizer>), [Control Flow Integrity](<https://sites.google.com/a/chromium.org/dev/developers/testing/control-flow-integrity>), [libFuzzer](<https://sites.google.com/a/chromium.org/dev/developers/testing/libfuzzer>), or [AFL](<https://github.com/google/afl>).\n\n\n\n\n\n\n\nSrinivas Sista\n\nGoogle Chrome", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-20T00:00:00", "type": "chrome", "title": "Stable Channel Update for Desktop", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-04-20T00:00:00", "id": "GCSA-1247606144415232205", "href": "https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "freebsd": [{"lastseen": "2022-01-19T15:51:30", "description": "\n\nChrome Releases reports:\n\nThis release contains 37 security fixes, including:\n\n[1025683] High CVE-2021-21201: Use after free in permissions.\n\t Reported by Gengming Liu, Jianyu Chen at Tencent Keen Security\n\t Lab on 2019-11-18\n[1188889] High CVE-2021-21202: Use after free in extensions.\n\t Reported by David Erceg on 2021-03-16\n[1192054] High CVE-2021-21203: Use after free in Blink.\n\t Reported by asnine on 2021-03-24\n[1189926] High CVE-2021-21204: Use after free in Blink.\n\t Reported by Chelse Tsai-Simek, Jeanette Ulloa, and Emily\n\t Voigtlander of Seesaw on 2021-03-19\n[1165654] High CVE-2021-21205: Insufficient policy enforcement\n\t in navigation. Reported by Alison Huffman, Microsoft Browser\n\t Vulnerability Research on 2021-01-12\n[1195333] High CVE-2021-21221: Insufficient validation of\n\t untrusted input in Mojo. Reported by Guang Gong of Alpha Lab,\n\t Qihoo 360 on 2021-04-02\n[1185732] Medium CVE-2021-21207: Use after free in IndexedDB.\n\t Reported by koocola (@alo_cook) and Nan Wang (@eternalsakura13)\n\t of 360 Alpha Lab on 2021-03-08\n[1039539] Medium CVE-2021-21208: Insufficient data validation\n\t in QR scanner. Reported by Ahmed Elsobky (@0xsobky) on\n\t 2020-01-07\n[1143526] Medium CVE-2021-21209: Inappropriate implementation\n\t in storage. Reported by Tom Van Goethem (@tomvangoethem) on\n\t 2020-10-29\n[1184562] Medium CVE-2021-21210: Inappropriate implementation\n\t in Network. Reported by @bananabr on 2021-03-04\n[1103119] Medium CVE-2021-21211: Inappropriate implementation\n\t in Navigation. Reported by Akash Labade (m0ns7er) on\n\t 2020-07-08\n[1145024] Medium CVE-2021-21212: Incorrect security UI in\n\t Network Config UI. Reported by Hugo Hue and Sze Yiu Chau of the\n\t Chinese University of Hong Kong on 2020-11-03\n[1161806] Medium CVE-2021-21213: Use after free in WebMIDI.\n\t Reported by raven (@raid_akame) on 2020-12-25\n[1170148] Medium CVE-2021-21214: Use after free in Network API.\n\t Reported by Anonymous on 2021-01-24\n[1172533] Medium CVE-2021-21215: Inappropriate implementation\n\t in Autofill. Reported by Abdulrahman Alqabandi, Microsoft Browser\n\t Vulnerability Research on 2021-01-30\n[1173297] Medium CVE-2021-21216: Inappropriate implementation\n\t in Autofill. Reported by Abdulrahman Alqabandi, Microsoft Browser\n\t Vulnerability Research on 2021-02-02\n[1166462] Low CVE-2021-21217: Uninitialized Use in PDFium.\n\t Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on\n\t 2021-01-14\n[1166478] Low CVE-2021-21218: Uninitialized Use in PDFium.\n\t Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on\n\t 2021-01-14\n[1166972] Low CVE-2021-21219: Uninitialized Use in PDFium.\n\t Reported by Zhou Aiting (@zhouat1) of Qihoo 360 Vulcan Team on\n\t 2021-01-15\n\n\n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-14T00:00:00", "type": "freebsd", "title": "chromium -- multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221"], "modified": "2021-04-14T00:00:00", "id": "F3D86439-9DEF-11EB-97A0-E09467587C17", "href": "https://vuxml.freebsd.org/freebsd/f3d86439-9def-11eb-97a0-e09467587c17.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-01-19T15:51:30", "description": "\n\nChrome Reelases reports:\n\nThis release includes 7 security fixes, including:\n\n1194046] High CVE-2021-21222: Heap buffer overflow in V8.\n\t Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-03-30\n[1195308] High CVE-2021-21223: Integer overflow in Mojo.\n\t Reported by Guang Gong of Alpha Lab, Qihoo 360 on 2021-04-02\n[1195777] High CVE-2021-21224: Type Confusion in V8. Reported\n\t by Jose Martinez (tr0y4) from VerSprite Inc. on 2021-04-05\n[1195977] High CVE-2021-21225: Out of bounds memory access in\n\t V8. Reported by Brendon Tiszka (@btiszka) supporting the EFF on\n\t 2021-04-05\n[1197904] High CVE-2021-21226: Use after free in navigation.\n\t Reported by Brendon Tiszka (@btiszka) supporting the EFF on\n\t 2021-04-11\n\n\n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-20T00:00:00", "type": "freebsd", "title": "chromium -- multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-04-20T00:00:00", "id": "CB13A765-A277-11EB-97A0-E09467587C17", "href": "https://vuxml.freebsd.org/freebsd/cb13a765-a277-11eb-97a0-e09467587c17.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-01-19T15:51:30", "description": "\n\nChrome Releases reports:\n\nThis release contains 32 security fixes, including:\n\n[1208721] High CVE-2021-30521: Heap buffer overflow in Autofill.\n\t Reported by ZhanJia Song on 2021-05-13\n[1176218] High CVE-2021-30522: Use after free in WebAudio.\n\t Reported by Piotr Bania of Cisco Talos on 2021-02-09\n[1187797] High CVE-2021-30523: Use after free in WebRTC.\n\t Reported by Tolyan Korniltsev on 2021-03-13\n[1197146] High CVE-2021-30524: Use after free in TabStrip.\n\t Reported by David Erceg on 2021-04-08\n[1197888] High CVE-2021-30525: Use after free in TabGroups.\n\t Reported by David Erceg on 2021-04-11\n[1198717] High CVE-2021-30526: Out of bounds write in\n\t TabStrip. Reported by David Erceg on 2021-04-13\n[1199198] High CVE-2021-30527: Use after free in WebUI.\n\t Reported by David Erceg on 2021-04-15\n[1206329] High CVE-2021-30528: Use after free in\n\t WebAuthentication. Reported by Man Yue Mo of GitHub Security Lab on\n\t 2021-05-06\n[1195278] Medium CVE-2021-30529: Use after free in Bookmarks.\n\t Reported by koocola (@alo_cook) and Nan Wang (@eternalsakura13) of\n\t 360 Alpha Lab on 2021-04-02\n[1201033] Medium CVE-2021-30530: Out of bounds memory access\n\t in WebAudio. Reported by kkwon on 2021-04-21\n[1115628] Medium CVE-2021-30531: Insufficient policy\n\t enforcement in Content Security Policy. Reported by Philip Papurt on\n\t 2020-08-12\n[1117687] Medium CVE-2021-30532: Insufficient policy\n\t enforcement in Content Security Policy. Reported by Philip Papurt on\n\t 2020-08-18\n[1145553] Medium CVE-2021-30533: Insufficient policy\n\t enforcement in PopupBlocker. Reported by Eliya Stein on\n\t 2020-11-04\n[1151507] Medium CVE-2021-30534: Insufficient policy\n\t enforcement in iFrameSandbox. Reported by Alesandro Ortiz on\n\t 2020-11-20\n[1194899] Medium CVE-2021-30535: Double free in ICU. Reported\n\t by nocma, leogan, cheneyxu of WeChat Open Platform Security Team on\n\t 2021-04-01\n[1145024] Medium CVE-2021-21212: Insufficient data validation\n\t in networking. Reported by Hugo Hue and Sze Yiu Chau of the Chinese\n\t University of Hong Kong on 2020-11-03\n[1194358] Low CVE-2021-30536: Out of bounds read in V8.\n\t Reported by Chris Salls (@salls) on 2021-03-31\n[830101] Low CVE-2021-30537: Insufficient policy enforcement\n\t in cookies. Reported by Jun Kokatsu (@shhnjk) on 2018-04-06\n[1115045] Low CVE-2021-30538: Insufficient policy enforcement\n\t in content security policy. Reported by Tianze Ding (@D1iv3) of\n\t Tencent Security Xuanwu Lab on 2020-08-11\n[971231] Low CVE-2021-30539: Insufficient policy enforcement\n\t in content security policy. Reported by unnamed researcher on\n\t 2019-06-05\n[1184147] Low CVE-2021-30540: Incorrect security UI in\n\t payments. Reported by @retsew0x01 on 2021-03-03\n\n\n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-05-25T00:00:00", "type": "freebsd", "title": "chromium -- multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212", "CVE-2021-30521", "CVE-2021-30522", "CVE-2021-30523", "CVE-2021-30524", "CVE-2021-30525", "CVE-2021-30526", "CVE-2021-30527", "CVE-2021-30528", "CVE-2021-30529", "CVE-2021-30530", "CVE-2021-30531", "CVE-2021-30532", "CVE-2021-30533", "CVE-2021-30534", "CVE-2021-30535", "CVE-2021-30536", "CVE-2021-30537", "CVE-2021-30538", "CVE-2021-30539", "CVE-2021-30540"], "modified": "2021-05-25T00:00:00", "id": "674ED047-BE0A-11EB-B927-3065EC8FD3EC", "href": "https://vuxml.freebsd.org/freebsd/674ed047-be0a-11eb-b927-3065ec8fd3ec.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "kaspersky": [{"lastseen": "2023-02-08T15:47:06", "description": "### *Detect date*:\n04/14/2021\n\n### *Severity*:\nHigh\n\n### *Description*:\nMultiple vulnerabilities were found in Google Chrome. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions, execute arbitrary code, obtain sensitive information, spoof user interface.\n\n### *Affected products*:\nGoogle Chrome earlier than 90.0.4430.72\n\n### *Solution*:\nUpdate to the latest version \n[Download Google Chrome](<https://www.google.com/chrome/>)\n\n### *Original advisories*:\n[Stable Channel Update for Desktop](<https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Google Chrome](<https://threats.kaspersky.com/en/product/Google-Chrome/>)\n\n### *CVE-IDS*:\n[CVE-2021-21216](<https://vulners.com/cve/CVE-2021-21216>)4.3Warning \n[CVE-2021-21221](<https://vulners.com/cve/CVE-2021-21221>)4.3Warning \n[CVE-2021-21201](<https://vulners.com/cve/CVE-2021-21201>)6.8High \n[CVE-2021-21202](<https://vulners.com/cve/CVE-2021-21202>)6.8High \n[CVE-2021-21209](<https://vulners.com/cve/CVE-2021-21209>)4.3Warning \n[CVE-2021-21205](<https://vulners.com/cve/CVE-2021-21205>)5.8High \n[CVE-2021-21213](<https://vulners.com/cve/CVE-2021-21213>)6.8High \n[CVE-2021-21204](<https://vulners.com/cve/CVE-2021-21204>)6.8High \n[CVE-2021-21210](<https://vulners.com/cve/CVE-2021-21210>)4.3Warning \n[CVE-2021-21219](<https://vulners.com/cve/CVE-2021-21219>)4.3Warning \n[CVE-2021-21203](<https://vulners.com/cve/CVE-2021-21203>)6.8High \n[CVE-2021-21212](<https://vulners.com/cve/CVE-2021-21212>)4.3Warning \n[CVE-2021-21211](<https://vulners.com/cve/CVE-2021-21211>)4.3Warning \n[CVE-2021-21207](<https://vulners.com/cve/CVE-2021-21207>)6.8High \n[CVE-2021-21215](<https://vulners.com/cve/CVE-2021-21215>)4.3Warning \n[CVE-2021-21218](<https://vulners.com/cve/CVE-2021-21218>)4.3Warning \n[CVE-2021-21214](<https://vulners.com/cve/CVE-2021-21214>)6.8High \n[CVE-2021-21217](<https://vulners.com/cve/CVE-2021-21217>)4.3Warning \n[CVE-2021-21208](<https://vulners.com/cve/CVE-2021-21208>)4.3Warning", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-14T00:00:00", "type": "kaspersky", "title": "KLA12144 Multiple vulnerabiltiies in Google Chrome", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221"], "modified": "2021-04-22T00:00:00", "id": "KLA12144", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12144/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-28T17:36:01", "description": "### *Detect date*:\n04/15/2021\n\n### *Severity*:\nWarning\n\n### *Description*:\nMultiple vulnerabilities were found in Microsoft Browser. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions, execute arbitrary code, obtain sensitive information, spoof user interface.\n\n### *Affected products*:\nMicrosoft Edge (Chromium-based)\n\n### *Solution*:\nInstall necessary updates from the Settings and more menu, that are listed in your About Microsoft Edge page (Microsoft Edge About page usually can be accessed from the Help and feedback option) \n[Microsoft Edge update settings](<https://support.microsoft.com/en-us/topic/microsoft-edge-update-settings-af8aaca2-1b69-4870-94fe-18822dbb7ef1>)\n\n### *Original advisories*:\n[CVE-2021-21203](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21203>) \n[CVE-2021-21212](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21212>) \n[CVE-2021-21217](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21217>) \n[CVE-2021-21213](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21213>) \n[CVE-2021-21204](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21204>) \n[CVE-2021-21214](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21214>) \n[CVE-2021-21211](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21211>) \n[CVE-2021-21201](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21201>) \n[CVE-2021-21210](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21210>) \n[CVE-2021-21219](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21219>) \n[CVE-2021-21215](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21215>) \n[CVE-2021-21202](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21202>) \n[CVE-2021-21218](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21218>) \n[CVE-2021-21216](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21216>) \n[CVE-2021-21209](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21209>) \n[CVE-2021-21205](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21205>) \n[CVE-2021-21221](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21221>) \n[CVE-2021-21207](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21207>) \n[CVE-2021-21208](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21208>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Microsoft Edge](<https://threats.kaspersky.com/en/product/Microsoft-Edge/>)\n\n### *CVE-IDS*:\n[CVE-2021-21216](<https://vulners.com/cve/CVE-2021-21216>)4.3Warning \n[CVE-2021-21221](<https://vulners.com/cve/CVE-2021-21221>)4.3Warning \n[CVE-2021-21201](<https://vulners.com/cve/CVE-2021-21201>)6.8High \n[CVE-2021-21202](<https://vulners.com/cve/CVE-2021-21202>)6.8High \n[CVE-2021-21209](<https://vulners.com/cve/CVE-2021-21209>)4.3Warning \n[CVE-2021-21205](<https://vulners.com/cve/CVE-2021-21205>)5.8High \n[CVE-2021-21213](<https://vulners.com/cve/CVE-2021-21213>)6.8High \n[CVE-2021-21204](<https://vulners.com/cve/CVE-2021-21204>)6.8High \n[CVE-2021-21210](<https://vulners.com/cve/CVE-2021-21210>)4.3Warning \n[CVE-2021-21219](<https://vulners.com/cve/CVE-2021-21219>)4.3Warning \n[CVE-2021-21203](<https://vulners.com/cve/CVE-2021-21203>)6.8High \n[CVE-2021-21212](<https://vulners.com/cve/CVE-2021-21212>)4.3Warning \n[CVE-2021-21211](<https://vulners.com/cve/CVE-2021-21211>)4.3Warning \n[CVE-2021-21207](<https://vulners.com/cve/CVE-2021-21207>)6.8High \n[CVE-2021-21215](<https://vulners.com/cve/CVE-2021-21215>)4.3Warning \n[CVE-2021-21218](<https://vulners.com/cve/CVE-2021-21218>)4.3Warning \n[CVE-2021-21214](<https://vulners.com/cve/CVE-2021-21214>)6.8High \n[CVE-2021-21217](<https://vulners.com/cve/CVE-2021-21217>)4.3Warning \n[CVE-2021-21208](<https://vulners.com/cve/CVE-2021-21208>)4.3Warning\n\n### *Microsoft official advisories*:", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-15T00:00:00", "type": "kaspersky", "title": "KLA12145 Multiple vulnerabilities in Microsoft Browser", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221"], "modified": "2023-03-28T00:00:00", "id": "KLA12145", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12145/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-28T17:35:53", "description": "### *Detect date*:\n04/22/2021\n\n### *Severity*:\nWarning\n\n### *Description*:\nMultiple vulnerabilities were found in Microsoft Browser. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service.\n\n### *Affected products*:\nMicrosoft Edge (Chromium-based)\n\n### *Solution*:\nInstall necessary updates from the Settings and more menu, that are listed in your About Microsoft Edge page (Microsoft Edge About page usually can be accessed from the Help and feedback option) \n[Microsoft Edge update settings](<https://support.microsoft.com/en-us/topic/microsoft-edge-update-settings-af8aaca2-1b69-4870-94fe-18822dbb7ef1>)\n\n### *Original advisories*:\n[CVE-2021-21225](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21225>) \n[CVE-2021-21222](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21222>) \n[CVE-2021-21223](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21223>) \n[CVE-2021-21224](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21224>) \n[CVE-2021-21226](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-21226>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Microsoft Edge](<https://threats.kaspersky.com/en/product/Microsoft-Edge/>)\n\n### *CVE-IDS*:\n[CVE-2021-21226](<https://vulners.com/cve/CVE-2021-21226>)6.8High \n[CVE-2021-21223](<https://vulners.com/cve/CVE-2021-21223>)6.8High \n[CVE-2021-21225](<https://vulners.com/cve/CVE-2021-21225>)6.8High \n[CVE-2021-21222](<https://vulners.com/cve/CVE-2021-21222>)4.3Warning \n[CVE-2021-21224](<https://vulners.com/cve/CVE-2021-21224>)6.8High\n\n### *Microsoft official advisories*:", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-22T00:00:00", "type": "kaspersky", "title": "KLA12153 Multiple vulnerabilities in Microsoft Browser", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2023-03-28T00:00:00", "id": "KLA12153", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12153/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-08T15:47:04", "description": "### *Detect date*:\n04/20/2021\n\n### *Severity*:\nHigh\n\n### *Description*:\nMultiple vulnerabilities were found in Google Chrome. Malicious users can exploit these vulnerabilities to execute arbitrary code.\n\n### *Affected products*:\nGoogle Chrome earlier than 90.0.4430.85\n\n### *Solution*:\nUpdate to the latest version \n[Download Google Chrome](<https://www.google.com/chrome/>)\n\n### *Original advisories*:\n[Stable Channel Update for Desktop](<https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Google Chrome](<https://threats.kaspersky.com/en/product/Google-Chrome/>)\n\n### *CVE-IDS*:\n[CVE-2021-21226](<https://vulners.com/cve/CVE-2021-21226>)6.8High \n[CVE-2021-21223](<https://vulners.com/cve/CVE-2021-21223>)6.8High \n[CVE-2021-21225](<https://vulners.com/cve/CVE-2021-21225>)6.8High \n[CVE-2021-21222](<https://vulners.com/cve/CVE-2021-21222>)4.3Warning \n[CVE-2021-21224](<https://vulners.com/cve/CVE-2021-21224>)6.8High", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-20T00:00:00", "type": "kaspersky", "title": "KLA12147 Multiple vulnerabiltiies in Google Chrome", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-05-27T00:00:00", "id": "KLA12147", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12147/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "archlinux": [{"lastseen": "2021-07-28T14:33:55", "description": "Arch Linux Security Advisory ASA-202104-5\n=========================================\n\nSeverity: High\nDate : 2021-04-29\nCVE-ID : CVE-2021-21201 CVE-2021-21202 CVE-2021-21203 CVE-2021-21207\nCVE-2021-21209 CVE-2021-21210 CVE-2021-21213 CVE-2021-21214\nCVE-2021-21215 CVE-2021-21216 CVE-2021-21217 CVE-2021-21218\nCVE-2021-21219 CVE-2021-21221 CVE-2021-21222 CVE-2021-21223\nCVE-2021-21224 CVE-2021-21225 CVE-2021-21226\nPackage : opera\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-1840\n\nSummary\n=======\n\nThe package opera before version 76.0.4017.94-1 is vulnerable to\nmultiple issues including arbitrary code execution, information\ndisclosure, sandbox escape and content spoofing.\n\nResolution\n==========\n\nUpgrade to 76.0.4017.94-1.\n\n# pacman -Syu \"opera>=76.0.4017.94-1\"\n\nThe problems have been fixed upstream in version 76.0.4017.94.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2021-21201 (sandbox escape)\n\nUse after free in permissions in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21202 (sandbox escape)\n\nUse after free in extensions in Google Chrome prior to 90.0.4430.72\nallowed an attacker who convinced a user to install a malicious\nextension to potentially perform a sandbox escape via a crafted Chrome\nExtension.\n\n- CVE-2021-21203 (arbitrary code execution)\n\nUse after free in Blink in Google Chrome prior to 90.0.4430.72 allowed\na remote attacker to potentially exploit heap corruption via a crafted\nHTML page.\n\n- CVE-2021-21207 (sandbox escape)\n\nUse after free in IndexedDB in Google Chrome prior to 90.0.4430.72\nallowed an attacker who convinced a user to install a malicious\nextension to potentially perform a sandbox escape via a crafted Chrome\nExtension.\n\n- CVE-2021-21209 (information disclosure)\n\nInappropriate implementation in storage in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to leak cross-origin data via a\ncrafted HTML page.\n\n- CVE-2021-21210 (information disclosure)\n\nInappropriate implementation in Network in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to potentially access local UDP\nports via a crafted HTML page.\n\n- CVE-2021-21213 (arbitrary code execution)\n\nUse after free in WebMIDI in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted HTML page.\n\n- CVE-2021-21214 (arbitrary code execution)\n\nUse after free in Network API in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted Chrome Extension.\n\n- CVE-2021-21215 (content spoofing)\n\nInappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a\ncrafted HTML page.\n\n- CVE-2021-21216 (content spoofing)\n\nInappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a\ncrafted HTML page.\n\n- CVE-2021-21217 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21218 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21219 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21221 (information disclosure)\n\nInsufficient validation of untrusted input in Mojo in Google Chrome\nprior to 90.0.4430.72 allowed a remote attacker who had compromised the\nrenderer process to leak cross-origin data via a crafted HTML page.\n\n- CVE-2021-21222 (sandbox escape)\n\nHeap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\nbypass site isolation via a crafted HTML page.\n\n- CVE-2021-21223 (sandbox escape)\n\nInteger overflow in Mojo in Google Chrome prior to 90.0.4430.85 allowed\na remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21224 (arbitrary code execution)\n\nType confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a\nremote attacker to execute arbitrary code inside a sandbox via a\ncrafted HTML page. Google is aware of reports that exploits for this\nissue exist in the wild.\n\n- CVE-2021-21225 (arbitrary code execution)\n\nOut of bounds memory access in V8 in Google Chrome prior to\n90.0.4430.85 allowed a remote attacker to potentially exploit heap\ncorruption via a crafted HTML page.\n\n- CVE-2021-21226 (sandbox escape)\n\nUse after free in navigation in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\nImpact\n======\n\nAn attacker is able to break out of the sandbox, execute arbitrary\ncode, spoof content, read sensitive data, and bypass extension security\npolicies through various means.\n\nReferences\n==========\n\nhttps://blogs.opera.com/desktop/changelog-for-75/\nhttps://blogs.opera.com/desktop/changelog-for-76/\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html\nhttps://crbug.com/1025683\nhttps://crbug.com/1188889\nhttps://crbug.com/1192054\nhttps://crbug.com/1185732\nhttps://crbug.com/1143526\nhttps://crbug.com/1184562\nhttps://crbug.com/1161806\nhttps://crbug.com/1170148\nhttps://crbug.com/1172533\nhttps://crbug.com/1173297\nhttps://crbug.com/1166462\nhttps://crbug.com/1166478\nhttps://crbug.com/1166972\nhttps://crbug.com/1195333\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html\nhttps://crbug.com/1194046\nhttps://crbug.com/1195308\nhttps://crbug.com/1195777\nhttps://crbug.com/1195977\nhttps://crbug.com/1197904\nhttps://security.archlinux.org/CVE-2021-21201\nhttps://security.archlinux.org/CVE-2021-21202\nhttps://security.archlinux.org/CVE-2021-21203\nhttps://security.archlinux.org/CVE-2021-21207\nhttps://security.archlinux.org/CVE-2021-21209\nhttps://security.archlinux.org/CVE-2021-21210\nhttps://security.archlinux.org/CVE-2021-21213\nhttps://security.archlinux.org/CVE-2021-21214\nhttps://security.archlinux.org/CVE-2021-21215\nhttps://security.archlinux.org/CVE-2021-21216\nhttps://security.archlinux.org/CVE-2021-21217\nhttps://security.archlinux.org/CVE-2021-21218\nhttps://security.archlinux.org/CVE-2021-21219\nhttps://security.archlinux.org/CVE-2021-21221\nhttps://security.archlinux.org/CVE-2021-21222\nhttps://security.archlinux.org/CVE-2021-21223\nhttps://security.archlinux.org/CVE-2021-21224\nhttps://security.archlinux.org/CVE-2021-21225\nhttps://security.archlinux.org/CVE-2021-21226", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-29T00:00:00", "type": "archlinux", "title": "[ASA-202104-5] opera: multiple issues", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21207", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-04-29T00:00:00", "id": "ASA-202104-5", "href": "https://security.archlinux.org/ASA-202104-5", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-07-28T14:33:55", "description": "Arch Linux Security Advisory ASA-202104-2\n=========================================\n\nSeverity: High\nDate : 2021-04-29\nCVE-ID : CVE-2021-21201 CVE-2021-21202 CVE-2021-21203 CVE-2021-21207\nCVE-2021-21209 CVE-2021-21210 CVE-2021-21213 CVE-2021-21214\nCVE-2021-21215 CVE-2021-21216 CVE-2021-21217 CVE-2021-21218\nCVE-2021-21219 CVE-2021-21221 CVE-2021-21222 CVE-2021-21223\nCVE-2021-21225 CVE-2021-21226 CVE-2021-21227 CVE-2021-21228\nCVE-2021-21229 CVE-2021-21230 CVE-2021-21231 CVE-2021-21232\nCVE-2021-21233\nPackage : vivaldi\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-1828\n\nSummary\n=======\n\nThe package vivaldi before version 3.8.2259.37-1 is vulnerable to\nmultiple issues including arbitrary code execution, information\ndisclosure, insufficient validation, sandbox escape, access restriction\nbypass, content spoofing and incorrect calculation.\n\nResolution\n==========\n\nUpgrade to 3.8.2259.37-1.\n\n# pacman -Syu \"vivaldi>=3.8.2259.37-1\"\n\nThe problems have been fixed upstream in version 3.8.2259.37.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2021-21201 (sandbox escape)\n\nUse after free in permissions in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21202 (sandbox escape)\n\nUse after free in extensions in Google Chrome prior to 90.0.4430.72\nallowed an attacker who convinced a user to install a malicious\nextension to potentially perform a sandbox escape via a crafted Chrome\nExtension.\n\n- CVE-2021-21203 (arbitrary code execution)\n\nUse after free in Blink in Google Chrome prior to 90.0.4430.72 allowed\na remote attacker to potentially exploit heap corruption via a crafted\nHTML page.\n\n- CVE-2021-21207 (sandbox escape)\n\nUse after free in IndexedDB in Google Chrome prior to 90.0.4430.72\nallowed an attacker who convinced a user to install a malicious\nextension to potentially perform a sandbox escape via a crafted Chrome\nExtension.\n\n- CVE-2021-21209 (information disclosure)\n\nInappropriate implementation in storage in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to leak cross-origin data via a\ncrafted HTML page.\n\n- CVE-2021-21210 (information disclosure)\n\nInappropriate implementation in Network in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to potentially access local UDP\nports via a crafted HTML page.\n\n- CVE-2021-21213 (arbitrary code execution)\n\nUse after free in WebMIDI in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted HTML page.\n\n- CVE-2021-21214 (arbitrary code execution)\n\nUse after free in Network API in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted Chrome Extension.\n\n- CVE-2021-21215 (content spoofing)\n\nInappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a\ncrafted HTML page.\n\n- CVE-2021-21216 (content spoofing)\n\nInappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a\ncrafted HTML page.\n\n- CVE-2021-21217 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21218 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21219 (information disclosure)\n\nUninitialized data in PDFium in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to obtain potentially sensitive information\nfrom process memory via a crafted PDF file.\n\n- CVE-2021-21221 (information disclosure)\n\nInsufficient validation of untrusted input in Mojo in Google Chrome\nprior to 90.0.4430.72 allowed a remote attacker who had compromised the\nrenderer process to leak cross-origin data via a crafted HTML page.\n\n- CVE-2021-21222 (sandbox escape)\n\nHeap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\nbypass site isolation via a crafted HTML page.\n\n- CVE-2021-21223 (sandbox escape)\n\nInteger overflow in Mojo in Google Chrome prior to 90.0.4430.85 allowed\na remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21225 (arbitrary code execution)\n\nOut of bounds memory access in V8 in Google Chrome prior to\n90.0.4430.85 allowed a remote attacker to potentially exploit heap\ncorruption via a crafted HTML page.\n\n- CVE-2021-21226 (sandbox escape)\n\nUse after free in navigation in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21227 (insufficient validation)\n\nAn insufficient data validation security issue has been found in the V8\ncomponent of the Chromium browser before version 90.0.4430.93.\n\n- CVE-2021-21228 (access restriction bypass)\n\nAn insufficient policy enforcement security issue has been found in the\nextensions component of the Chromium browser before version\n90.0.4430.93.\n\n- CVE-2021-21229 (content spoofing)\n\nAn incorrect security UI security issue has been found in the downloads\ncomponent of the Chromium browser before version 90.0.4430.93.\n\n- CVE-2021-21230 (incorrect calculation)\n\nA type confusion security issue has been found in the V8 component of\nthe Chromium browser before version 90.0.4430.93.\n\n- CVE-2021-21231 (incorrect calculation)\n\nAn insufficient data validation security issue has been found in the V8\ncomponent of the Chromium browser before version 90.0.4430.93.\n\n- CVE-2021-21232 (arbitrary code execution)\n\nA use after free security issue has been found in the Dev Tools\ncomponent of the Chromium browser before version 90.0.4430.93.\n\n- CVE-2021-21233 (arbitrary code execution)\n\nA heap buffer overflow security issue has been found in the ANGLE\ncomponent of the Chromium browser before version 90.0.4430.93.\n\nImpact\n======\n\nAn attacker is able to break out of the sandbox, execute arbitrary\ncode, spoof content, read sensitive data, and bypass extension security\npolicies through various means.\n\nReferences\n==========\n\nhttps://vivaldi.com/blog/desktop/minor-update-3-for-vivaldi-desktop-browser-3-7/\nhttps://vivaldi.com/blog/desktop/minor-update-4-for-vivaldi-desktop-browser-3-7/\nhttps://vivaldi.com/blog/new-vivaldi-on-android-language-switcher-blocks-cookies-dialogs/\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html\nhttps://crbug.com/1025683\nhttps://crbug.com/1188889\nhttps://crbug.com/1192054\nhttps://crbug.com/1185732\nhttps://crbug.com/1143526\nhttps://crbug.com/1184562\nhttps://crbug.com/1161806\nhttps://crbug.com/1170148\nhttps://crbug.com/1172533\nhttps://crbug.com/1173297\nhttps://crbug.com/1166462\nhttps://crbug.com/1166478\nhttps://crbug.com/1166972\nhttps://crbug.com/1195333\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html\nhttps://crbug.com/1194046\nhttps://crbug.com/1195308\nhttps://crbug.com/1195977\nhttps://crbug.com/1197904\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_26.html\nhttps://crbug.com/1199345\nhttps://crbug.com/1139156\nhttps://crbug.com/1198165\nhttps://crbug.com/1198705\nhttps://crbug.com/1198696\nhttps://crbug.com/1175058\nhttps://crbug.com/1182937\nhttps://security.archlinux.org/CVE-2021-21201\nhttps://security.archlinux.org/CVE-2021-21202\nhttps://security.archlinux.org/CVE-2021-21203\nhttps://security.archlinux.org/CVE-2021-21207\nhttps://security.archlinux.org/CVE-2021-21209\nhttps://security.archlinux.org/CVE-2021-21210\nhttps://security.archlinux.org/CVE-2021-21213\nhttps://security.archlinux.org/CVE-2021-21214\nhttps://security.archlinux.org/CVE-2021-21215\nhttps://security.archlinux.org/CVE-2021-21216\nhttps://security.archlinux.org/CVE-2021-21217\nhttps://security.archlinux.org/CVE-2021-21218\nhttps://security.archlinux.org/CVE-2021-21219\nhttps://security.archlinux.org/CVE-2021-21221\nhttps://security.archlinux.org/CVE-2021-21222\nhttps://security.archlinux.org/CVE-2021-21223\nhttps://security.archlinux.org/CVE-2021-21225\nhttps://security.archlinux.org/CVE-2021-21226\nhttps://security.archlinux.org/CVE-2021-21227\nhttps://security.archlinux.org/CVE-2021-21228\nhttps://security.archlinux.org/CVE-2021-21229\nhttps://security.archlinux.org/CVE-2021-21230\nhttps://security.archlinux.org/CVE-2021-21231\nhttps://security.archlinux.org/CVE-2021-21232\nhttps://security.archlinux.org/CVE-2021-21233", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-29T00:00:00", "type": "archlinux", "title": "[ASA-202104-2] vivaldi: multiple issues", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21207", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-04-29T00:00:00", "id": "ASA-202104-2", "href": "https://security.archlinux.org/ASA-202104-2", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-07-28T14:33:54", "description": "Arch Linux Security Advisory ASA-202104-7\n=========================================\n\nSeverity: High\nDate : 2021-04-29\nCVE-ID : CVE-2021-21222 CVE-2021-21223 CVE-2021-21224 CVE-2021-21225\nCVE-2021-21226\nPackage : chromium\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-1843\n\nSummary\n=======\n\nThe package chromium before version 90.0.4430.85-1 is vulnerable to\nmultiple issues including arbitrary code execution and sandbox escape.\n\nResolution\n==========\n\nUpgrade to 90.0.4430.85-1.\n\n# pacman -Syu \"chromium>=90.0.4430.85-1\"\n\nThe problems have been fixed upstream in version 90.0.4430.85.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2021-21222 (sandbox escape)\n\nHeap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\nbypass site isolation via a crafted HTML page.\n\n- CVE-2021-21223 (sandbox escape)\n\nInteger overflow in Mojo in Google Chrome prior to 90.0.4430.85 allowed\na remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n- CVE-2021-21224 (arbitrary code execution)\n\nType confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a\nremote attacker to execute arbitrary code inside a sandbox via a\ncrafted HTML page. Google is aware of reports that exploits for this\nissue exist in the wild.\n\n- CVE-2021-21225 (arbitrary code execution)\n\nOut of bounds memory access in V8 in Google Chrome prior to\n90.0.4430.85 allowed a remote attacker to potentially exploit heap\ncorruption via a crafted HTML page.\n\n- CVE-2021-21226 (sandbox escape)\n\nUse after free in navigation in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\nImpact\n======\n\nAn attacker can escape the site isolation sandbox through a compromised\nrendered process. In addition, an attacker can execute arbitrary code\nand escape the sandbox through a crafted HTML page.\n\nReferences\n==========\n\nhttps://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html\nhttps://crbug.com/1194046\nhttps://crbug.com/1195308\nhttps://crbug.com/1195777\nhttps://crbug.com/1195977\nhttps://crbug.com/1197904\nhttps://security.archlinux.org/CVE-2021-21222\nhttps://security.archlinux.org/CVE-2021-21223\nhttps://security.archlinux.org/CVE-2021-21224\nhttps://security.archlinux.org/CVE-2021-21225\nhttps://security.archlinux.org/CVE-2021-21226", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-29T00:00:00", "type": "archlinux", "title": "[ASA-202104-7] chromium: multiple issues", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-04-29T00:00:00", "id": "ASA-202104-7", "href": "https://security.archlinux.org/ASA-202104-7", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "suse": [{"lastseen": "2022-11-10T02:12:05", "description": "An update that fixes 25 vulnerabilities is now available.\n\nDescription:\n\n This update for chromium fixes the following issues:\n\n - Chromium was updated to 90.0.4430.93\n (boo#1184764,boo#1185047,boo#1185398)\n * CVE-2021-21227: Insufficient data validation in V8.\n * CVE-2021-21232: Use after free in Dev Tools.\n * CVE-2021-21233: Heap buffer overflow in ANGLE.\n * CVE-2021-21228: Insufficient policy enforcement in extensions.\n * CVE-2021-21229: Incorrect security UI in downloads.\n * CVE-2021-21230: Type Confusion in V8.\n * CVE-2021-21231: Insufficient data validation in V8.\n * CVE-2021-21222: Heap buffer overflow in V8\n * CVE-2021-21223: Integer overflow in Mojo\n * CVE-2021-21224: Type Confusion in V8\n * CVE-2021-21225: Out of bounds memory access in V8\n * CVE-2021-21226: Use after free in navigation\n * CVE-2021-21201: Use after free in permissions\n * CVE-2021-21202: Use after free in extensions\n * CVE-2021-21203: Use after free in Blink\n * CVE-2021-21204: Use after free in Blink\n * CVE-2021-21205: Insufficient policy enforcement in navigation\n * CVE-2021-21221: Insufficient validation of untrusted input in Mojo\n * CVE-2021-21207: Use after free in IndexedDB\n * CVE-2021-21208: Insufficient data validation in QR scanner\n * CVE-2021-21209: Inappropriate implementation in storage\n * CVE-2021-21210: Inappropriate implementation in Network\n * CVE-2021-21211: Inappropriate implementation in Navigatio\n * CVE-2021-21212: Incorrect security UI in Network Config UI\n * CVE-2021-21213: Use after free in WebMIDI\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.2:\n\n zypper in -t patch openSUSE-2021-629=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-05-01T00:00:00", "type": "suse", "title": "Security update for Chromium (critical)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-05-01T00:00:00", "id": "OPENSUSE-SU-2021:0629-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/NBOWNTMQCMDYBSMTERFTO5ZSZSUCY7QW/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-11-06T17:58:45", "description": "An update that fixes 7 vulnerabilities is now available.\n\nDescription:\n\n This update for opera fixes the following issues:\n\n Update to version 76.0.4017.94\n\n - released on the stable branch\n\n Update to version 76.0.4017.88\n\n - CHR-8404 Update chromium on desktop-stable-90-4017 to 90.0.4430.85\n - DNA-92219 Add bookmark API supports to the front-end\n - DNA-92409 [MAC] \ufffd\ufffd\ufffdPresent now\ufffd\ufffd\ufffd options windows appear behind\n detached window\n - DNA-92615 Capture tab from the tab context menu\n - DNA-92616 Capture tab from Snapshot\n - DNA-92617 Capture tab from image context menu\n - DNA-92652 Opera 76 translations\n - DNA-92680 Make image selector on any page work like bookmarks popup WP2\n - DNA-92707 Crash at void base::ObserverList::AddObserver(class\n content::PrerenderHost::Observer*)\n - DNA-92710 Autoupdate on macOS 11.3 not working\n - DNA-92711 Make image selector on any page work like bookmarks popup WP3\n - DNA-92730 Make image selector on any page work like bookmarks popup WP4\n - DNA-92761 Make image selector on any page work like bookmarks popup WP5\n - DNA-92776 Make image selector on any page work like bookmarks popup WP6\n - DNA-92862 Make \ufffd\ufffd\ufffdView pinboards\ufffd\ufffd\ufffd button work\n - DNA-92906 Provide in-house translations for Cashback strings to Spanish\n - DNA-92908 API collides with oneclick installer\n - The update to chromium 90.0.4430.85 fixes following issues:\n - CVE-2021-21222, CVE-2021-21223, CVE-2021-21224, CVE-2021-21225,\n CVE-2021-21226\n\n - Complete Opera 76.0 changelog at:\n https://blogs.opera.com/desktop/changelog-for-76/\n\n Update to version 75.0.3969.218\n\n - CHR-8393 Update chromium on desktop-stable-89-3969 to 89.0.4389.128\n - DNA-92113 Windows debug fails to compile\n opera_components/ipfs/ipfs/ipfs_url_loader_throttle.obj\n - DNA-92198 [Arm] Update signing scripts\n - DNA-92200 [Arm] Create universal packages from two buildsets\n - DNA-92338 [Search tabs] The preview isn\ufffd\ufffd\ufffdt updated when the tab from\n another window is closed\n - DNA-92410 [Download popup] Selected item still looks bad in dark mode\n - DNA-92441 Compilation error\n - DNA-92514 Allow to generate universal DMG package from existing\n universal .tar.xz\n - DNA-92608 Opera 75 crash during rapid workspace switching\n - DNA-92627 Crash at automation::Error::code()\n - DNA-92630 Crash at\n opera::PremiumExtensionPersistentPrefStorageImpl::IsPremiumExtensionFeature\n Enabled()\n - DNA-92648 Amazon icon disappears from Sidebar Extensions section after\n pressing Hide Amazon button\n - DNA-92681 Add missing string in Japanese\n - DNA-92684 Fix issues with signing multiple bsids\n - DNA-92706 Update repack generation from universal packages\n - DNA-92725 Enable IPFS for all channels\n\n - The update to chromium 89.0.4389.128 fixes following issues:\n CVE-2021-21206, CVE-2021-21220\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.2:NonFree:\n\n zypper in -t patch openSUSE-2021-712=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-05-11T00:00:00", "type": "suse", "title": "Security update for opera (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226"], "modified": "2021-05-11T00:00:00", "id": "OPENSUSE-SU-2021:0712-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/UVVTKODULIJ72SWD273BSN4VWATWGOOD/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-11-08T04:09:03", "description": "An update that fixes 21 vulnerabilities is now available.\n\nDescription:\n\n This update for chromium fixes the following issues:\n\n Chromium 91.0.4472.77 (boo#1186458):\n\n * Support Managed configuration API for Web Applications\n * WebOTP API: cross-origin iframe support\n * CSS custom counter styles\n * Support JSON Modules\n * Clipboard: read-only files support\n * Remove webkitBeforeTextInserted & webkitEditableCOntentChanged JS events\n * Honor media HTML attribute for link icon\n * Import Assertions\n * Class static initializer blocks\n * Ergonomic brand checks for private fields\n * Expose WebAssembly SIMD\n * New Feature: WebTransport\n * ES Modules for service workers ('module' type option)\n * Suggested file name and location for the File System Access API\n * adaptivePTime property for RTCRtpEncodingParameters\n * Block HTTP port 10080 - mitigation for NAT Slipstream 2.0 attack\n * Support WebSockets over HTTP/2\n * Support 103 Early Hints for Navigation\n * CVE-2021-30521: Heap buffer overflow in Autofill\n * CVE-2021-30522: Use after free in WebAudio\n * CVE-2021-30523: Use after free in WebRTC\n * CVE-2021-30524: Use after free in TabStrip\n * CVE-2021-30525: Use after free in TabGroups\n * CVE-2021-30526: Out of bounds write in TabStrip\n * CVE-2021-30527: Use after free in WebUI\n * CVE-2021-30528: Use after free in WebAuthentication\n * CVE-2021-30529: Use after free in Bookmarks\n * CVE-2021-30530: Out of bounds memory access in WebAudio\n * CVE-2021-30531: Insufficient policy enforcement in Content Security\n Policy\n * CVE-2021-30532: Insufficient policy enforcement in Content Security\n Policy\n * CVE-2021-30533: Insufficient policy enforcement in PopupBlocker\n * CVE-2021-30534: Insufficient policy enforcement in iFrameSandbox\n * CVE-2021-30535: Double free in ICU\n * CVE-2021-21212: Insufficient data validation in networking\n * CVE-2021-30536: Out of bounds read in V8\n * CVE-2021-30537: Insufficient policy enforcement in cookies\n * CVE-2021-30538: Insufficient policy enforcement in content security\n policy\n * CVE-2021-30539: Insufficient policy enforcement in content security\n policy\n * CVE-2021-30540: Incorrect security UI in payments\n * Various fixes from internal audits, fuzzing and other initiatives\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Backports SLE-15-SP3:\n\n zypper in -t patch openSUSE-2021-840=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-06-04T00:00:00", "type": "suse", "title": "Security update for chromium (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212", "CVE-2021-30521", "CVE-2021-30522", "CVE-2021-30523", "CVE-2021-30524", "CVE-2021-30525", "CVE-2021-30526", "CVE-2021-30527", "CVE-2021-30528", "CVE-2021-30529", "CVE-2021-30530", "CVE-2021-30531", "CVE-2021-30532", "CVE-2021-30533", "CVE-2021-30534", "CVE-2021-30535", "CVE-2021-30536", "CVE-2021-30537", "CVE-2021-30538", "CVE-2021-30539", "CVE-2021-30540"], "modified": "2021-06-04T00:00:00", "id": "OPENSUSE-SU-2021:0840-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/XA5KKDV2D4YM2QDZBKGBLQ726LJLT6BI/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-11-08T04:09:03", "description": "An update that fixes 21 vulnerabilities is now available.\n\nDescription:\n\n This update for chromium fixes the following issues:\n\n Chromium 91.0.4472.77 (boo#1186458):\n\n * Support Managed configuration API for Web Applications\n * WebOTP API: cross-origin iframe support\n * CSS custom counter styles\n * Support JSON Modules\n * Clipboard: read-only files support\n * Remove webkitBeforeTextInserted & webkitEditableCOntentChanged JS events\n * Honor media HTML attribute for link icon\n * Import Assertions\n * Class static initializer blocks\n * Ergonomic brand checks for private fields\n * Expose WebAssembly SIMD\n * New Feature: WebTransport\n * ES Modules for service workers ('module' type option)\n * Suggested file name and location for the File System Access API\n * adaptivePTime property for RTCRtpEncodingParameters\n * Block HTTP port 10080 - mitigation for NAT Slipstream 2.0 attack\n * Support WebSockets over HTTP/2\n * Support 103 Early Hints for Navigation\n * CVE-2021-30521: Heap buffer overflow in Autofill\n * CVE-2021-30522: Use after free in WebAudio\n * CVE-2021-30523: Use after free in WebRTC\n * CVE-2021-30524: Use after free in TabStrip\n * CVE-2021-30525: Use after free in TabGroups\n * CVE-2021-30526: Out of bounds write in TabStrip\n * CVE-2021-30527: Use after free in WebUI\n * CVE-2021-30528: Use after free in WebAuthentication\n * CVE-2021-30529: Use after free in Bookmarks\n * CVE-2021-30530: Out of bounds memory access in WebAudio\n * CVE-2021-30531: Insufficient policy enforcement in Content Security\n Policy\n * CVE-2021-30532: Insufficient policy enforcement in Content Security\n Policy\n * CVE-2021-30533: Insufficient policy enforcement in PopupBlocker\n * CVE-2021-30534: Insufficient policy enforcement in iFrameSandbox\n * CVE-2021-30535: Double free in ICU\n * CVE-2021-21212: Insufficient data validation in networking\n * CVE-2021-30536: Out of bounds read in V8\n * CVE-2021-30537: Insufficient policy enforcement in cookies\n * CVE-2021-30538: Insufficient policy enforcement in content security\n policy\n * CVE-2021-30539: Insufficient policy enforcement in content security\n policy\n * CVE-2021-30540: Incorrect security UI in payments\n * Various fixes from internal audits, fuzzing and other initiatives\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.2:\n\n zypper in -t patch openSUSE-2021-825=1", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-06-02T00:00:00", "type": "suse", "title": "Security update for chromium (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212", "CVE-2021-30521", "CVE-2021-30522", "CVE-2021-30523", "CVE-2021-30524", "CVE-2021-30525", "CVE-2021-30526", "CVE-2021-30527", "CVE-2021-30528", "CVE-2021-30529", "CVE-2021-30530", "CVE-2021-30531", "CVE-2021-30532", "CVE-2021-30533", "CVE-2021-30534", "CVE-2021-30535", "CVE-2021-30536", "CVE-2021-30537", "CVE-2021-30538", "CVE-2021-30539", "CVE-2021-30540"], "modified": "2021-06-02T00:00:00", "id": "OPENSUSE-SU-2021:0825-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/MJJHCREERF6N3XLSWRNBLKZ4TY5THPTY/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "fedora": [{"lastseen": "2021-07-28T18:41:40", "description": "Chromium is an open-source web browser, powered by WebKit (Blink). ", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-05-12T05:35:46", "type": "fedora", "title": "[SECURITY] Fedora 32 Update: chromium-90.0.4430.93-1.fc32", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21194", "CVE-2021-21195", "CVE-2021-21196", "CVE-2021-21197", "CVE-2021-21198", "CVE-2021-21199", "CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21206", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21220", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-05-12T05:35:46", "id": "FEDORA:D63AA304E89C", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-07-28T18:41:40", "description": "Chromium is an open-source web browser, powered by WebKit (Blink). ", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-05-12T05:44:40", "type": "fedora", "title": "[SECURITY] Fedora 34 Update: chromium-90.0.4430.93-1.fc34", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21194", "CVE-2021-21195", "CVE-2021-21196", "CVE-2021-21197", "CVE-2021-21198", "CVE-2021-21199", "CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21206", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21220", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-05-12T05:44:40", "id": "FEDORA:B4C4A30D8539", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-07-28T18:41:40", "description": "Chromium is an open-source web browser, powered by WebKit (Blink). ", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-05-14T21:12:29", "type": "fedora", "title": "[SECURITY] Fedora 33 Update: chromium-90.0.4430.93-1.fc33", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21194", "CVE-2021-21195", "CVE-2021-21196", "CVE-2021-21197", "CVE-2021-21198", "CVE-2021-21199", "CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21206", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21220", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-05-14T21:12:29", "id": "FEDORA:993DD30E4796", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "gentoo": [{"lastseen": "2022-01-17T18:59:29", "description": "### Background\n\nChromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web. \n\nGoogle Chrome is one fast, simple, and secure browser for all your devices. \n\n### Description\n\nMultiple vulnerabilities have been discovered in Chromium and Google Chrome. Please review the CVE identifiers referenced below for details. \n\n### Impact\n\nPlease review the referenced CVE identifiers for details.\n\n### Workaround\n\nThere is no known workaround at this time.\n\n### Resolution\n\nAll Chromium users should upgrade to the latest version:\n \n \n # emerge --sync\n # emerge --ask --oneshot --verbose\n \">=www-client/chromium-90.0.4430.93\"\n \n\nAll Google Chrome users should upgrade to the latest version:\n \n \n # emerge --sync\n # emerge --ask --oneshot --verbose\n \">=www-client/google-chrome-90.0.4430.93\"", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.6, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 6.0}, "published": "2021-04-30T00:00:00", "type": "gentoo", "title": "Chromium, Google Chrome: Multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21142", "CVE-2021-21143", "CVE-2021-21144", "CVE-2021-21145", "CVE-2021-21146", "CVE-2021-21147", "CVE-2021-21148", "CVE-2021-21149", "CVE-2021-21150", "CVE-2021-21151", "CVE-2021-21152", "CVE-2021-21153", "CVE-2021-21154", "CVE-2021-21155", "CVE-2021-21156", "CVE-2021-21157", "CVE-2021-21159", "CVE-2021-21160", "CVE-2021-21161", "CVE-2021-21162", "CVE-2021-21163", "CVE-2021-21165", "CVE-2021-21166", "CVE-2021-21167", "CVE-2021-21168", "CVE-2021-21169", "CVE-2021-21170", "CVE-2021-21171", "CVE-2021-21172", "CVE-2021-21173", "CVE-2021-21174", "CVE-2021-21175", "CVE-2021-21176", "CVE-2021-21177", "CVE-2021-21178", "CVE-2021-21179", "CVE-2021-21180", "CVE-2021-21181", "CVE-2021-21182", "CVE-2021-21183", "CVE-2021-21184", "CVE-2021-21185", "CVE-2021-21186", "CVE-2021-21187", "CVE-2021-21188", "CVE-2021-21189", "CVE-2021-2119", "CVE-2021-21191", "CVE-2021-21192", "CVE-2021-21193", "CVE-2021-21194", "CVE-2021-21195", "CVE-2021-21196", "CVE-2021-21197", "CVE-2021-21198", "CVE-2021-21199", "CVE-2021-21201", "CVE-2021-21202", "CVE-2021-21203", "CVE-2021-21204", "CVE-2021-21205", "CVE-2021-21206", "CVE-2021-21207", "CVE-2021-21208", "CVE-2021-21209", "CVE-2021-21210", "CVE-2021-21211", "CVE-2021-21212", "CVE-2021-21213", "CVE-2021-21214", "CVE-2021-21215", "CVE-2021-21216", "CVE-2021-21217", "CVE-2021-21218", "CVE-2021-21219", "CVE-2021-21220", "CVE-2021-21221", "CVE-2021-21222", "CVE-2021-21223", "CVE-2021-21224", "CVE-2021-21225", "CVE-2021-21226", "CVE-2021-21227", "CVE-2021-21228", "CVE-2021-21229", "CVE-2021-21230", "CVE-2021-21231", "CVE-2021-21232", "CVE-2021-21233"], "modified": "2021-04-30T00:00:00", "id": "GLSA-202104-08", "href": "https://security.gentoo.org/glsa/202104-08", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "mscve": [{"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2021-04-15T18:40:03", "type": "mscve", "title": "Chromium: CVE-2021-21205 Insufficient policy enforcement in navigation", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21205"], "modified": "2021-04-15T18:40:03", "id": "MS:CVE-2021-21205", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21205", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:09", "type": "mscve", "title": " Chromium: CVE-2021-21218 Uninitialized Use in PDFium", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21218"], "modified": "2021-04-15T18:40:09", "id": "MS:CVE-2021-21218", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21218", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-15T18:40:04", "type": "mscve", "title": " Chromium: CVE-2021-21207 Use after free in IndexedDB", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21207"], "modified": "2021-04-15T18:40:04", "id": "MS:CVE-2021-21207", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21207", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:08", "type": "mscve", "title": " Chromium: CVE-2021-21217 Uninitialized Use in PDFium", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21217"], "modified": "2021-04-15T18:40:08", "id": "MS:CVE-2021-21217", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21217", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:04", "type": "mscve", "title": " Chromium: CVE-2021-21208 Insufficient data validation in QR scanner", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21208"], "modified": "2021-04-15T18:40:04", "id": "MS:CVE-2021-21208", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21208", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-15T18:40:02", "type": "mscve", "title": "Chromium: CVE-2021-21204 Use after free in Blink", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21204"], "modified": "2021-04-15T18:40:02", "id": "MS:CVE-2021-21204", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21204", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-15T18:40:00", "type": "mscve", "title": "Chromium: CVE-2021-21201 Use after free in permissions", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201"], "modified": "2021-04-15T18:40:00", "id": "MS:CVE-2021-21201", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21201", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:06", "type": "mscve", "title": " Chromium: CVE-2021-21211 Inappropriate implementation in Navigation", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21211"], "modified": "2021-04-15T18:40:06", "id": "MS:CVE-2021-21211", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21211", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-15T18:40:02", "type": "mscve", "title": "Chromium: CVE-2021-21203 Use after free in Blink", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21203"], "modified": "2021-04-15T18:40:02", "id": "MS:CVE-2021-21203", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21203", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-15T18:40:06", "type": "mscve", "title": " Chromium: CVE-2021-21213 Use after free in WebMIDI", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21213"], "modified": "2021-04-15T18:40:06", "id": "MS:CVE-2021-21213", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21213", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:09", "type": "mscve", "title": " Chromium: CVE-2021-21219 Uninitialized Use in PDFium", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21219"], "modified": "2021-04-15T18:40:09", "id": "MS:CVE-2021-21219", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21219", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-15T18:40:07", "type": "mscve", "title": " Chromium: CVE-2021-21214 Use after free in Network API", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21214"], "modified": "2021-04-15T18:40:07", "id": "MS:CVE-2021-21214", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21214", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:05", "type": "mscve", "title": " Chromium: CVE-2021-21210 Inappropriate implementation in Network", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21210"], "modified": "2021-04-15T18:40:05", "id": "MS:CVE-2021-21210", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21210", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-15T18:40:01", "type": "mscve", "title": "Chromium: CVE-2021-21202 Use after free in extensions", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21202"], "modified": "2021-04-15T18:40:01", "id": "MS:CVE-2021-21202", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21202", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-22T20:16:16", "type": "mscve", "title": "Chromium: CVE-2021-21226 Use after free in navigation", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21226"], "modified": "2021-04-22T20:16:16", "id": "MS:CVE-2021-21226", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21226", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:07", "type": "mscve", "title": " Chromium: CVE-2021-21215 Inappropriate implementation in Autofill", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21215"], "modified": "2021-04-15T18:40:07", "id": "MS:CVE-2021-21215", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21215", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:03", "type": "mscve", "title": "Chromium: CVE-2021-21221 Insufficient validation of untrusted input in Mojo", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21221"], "modified": "2021-04-15T18:40:03", "id": "MS:CVE-2021-21221", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21221", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:05", "type": "mscve", "title": " Chromium: CVE-2021-21209 Inappropriate implementation in storage", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21209"], "modified": "2021-04-15T18:40:05", "id": "MS:CVE-2021-21209", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21209", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:06", "type": "mscve", "title": " Chromium: CVE-2021-21212 Incorrect security UI in Network Config UI", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212"], "modified": "2021-04-15T18:40:06", "id": "MS:CVE-2021-21212", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21212", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-22T20:16:15", "type": "mscve", "title": "Chromium: CVE-2021-21223 Integer overflow in Mojo", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21223"], "modified": "2021-04-22T20:16:15", "id": "MS:CVE-2021-21223", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21223", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-22T20:16:15", "type": "mscve", "title": "Chromium: CVE-2021-21225 Out of bounds memory access in V8", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21225"], "modified": "2021-04-22T20:16:15", "id": "MS:CVE-2021-21225", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21225", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-22T20:16:13", "type": "mscve", "title": "Chromium: CVE-2021-21222 Heap buffer overflow in V8", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222"], "modified": "2021-04-22T20:16:13", "id": "MS:CVE-2021-21222", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21222", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-15T18:40:08", "type": "mscve", "title": " Chromium: CVE-2021-21216 Inappropriate implementation in Autofill", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21216"], "modified": "2021-04-15T18:40:08", "id": "MS:CVE-2021-21216", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21216", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-17T02:34:19", "description": "This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see [Google Chrome Releases](<https://chromereleases.googleblog.com/2021>) for more information.\n\nThis vulnerability was addressed in Microsoft Edge (Chromium-based) in build 90.0.818.41 which was released April 16, 2021.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-22T20:16:16", "type": "mscve", "title": "Chromium: CVE-2021-21224 Type Confusion in V8", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2021-04-22T20:16:16", "id": "MS:CVE-2021-21224", "href": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21224", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "ubuntucve": [{"lastseen": "2023-02-03T13:37:36", "description": "Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed\nan attacker who convinced a user to install a malicious extension to\npotentially perform a sandbox escape via a crafted Chrome Extension.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21207", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21207"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21207", "href": "https://ubuntu.com/security/CVE-2021-21207", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:33", "description": "Uninitialized data in PDFium in Google Chrome prior to 90.0.4430.72 allowed\na remote attacker to obtain potentially sensitive information from process\nmemory via a crafted PDF file.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21218", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21218"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21218", "href": "https://ubuntu.com/security/CVE-2021-21218", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:37", "description": "Insufficient policy enforcement in navigation in Google Chrome on iOS prior\nto 90.0.4430.72 allowed a remote attacker to bypass navigation restrictions\nvia a crafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21205", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21205"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21205", "href": "https://ubuntu.com/security/CVE-2021-21205", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:35", "description": "Insufficient data validation in QR scanner in Google Chrome on iOS prior to\n90.0.4430.72 allowed an attacker displaying a QR code to perform domain\nspoofing via a crafted QR code.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21208", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21208"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21208", "href": "https://ubuntu.com/security/CVE-2021-21208", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:35", "description": "Use after free in Blink in Google Chrome on OS X prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21204", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21204"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21204", "href": "https://ubuntu.com/security/CVE-2021-21204", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:33", "description": "Uninitialized data in PDFium in Google Chrome prior to 90.0.4430.72 allowed\na remote attacker to obtain potentially sensitive information from process\nmemory via a crafted PDF file.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21217", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21217"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21217", "href": "https://ubuntu.com/security/CVE-2021-21217", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:36", "description": "Use after free in permissions in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker who had compromised the renderer process to\npotentially perform a sandbox escape via a crafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21201", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21201", "href": "https://ubuntu.com/security/CVE-2021-21201", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:34", "description": "Inappropriate implementation in Navigation in Google Chrome on iOS prior to\n90.0.4430.72 allowed a remote attacker to leak cross-origin data via a\ncrafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21211", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21211"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21211", "href": "https://ubuntu.com/security/CVE-2021-21211", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:36", "description": "Use after free in Blink in Google Chrome prior to 90.0.4430.72 allowed a\nremote attacker to potentially exploit heap corruption via a crafted HTML\npage.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21203", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21203"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21203", "href": "https://ubuntu.com/security/CVE-2021-21203", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:33", "description": "Use after free in WebMIDI in Google Chrome prior to 90.0.4430.72 allowed a\nremote attacker to potentially exploit heap corruption via a crafted HTML\npage.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21213", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21213"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21213", "href": "https://ubuntu.com/security/CVE-2021-21213", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:34", "description": "Use after free in Network API in Google Chrome prior to 90.0.4430.72\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted Chrome Extension.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21214", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21214"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21214", "href": "https://ubuntu.com/security/CVE-2021-21214", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:35", "description": "Uninitialized data in PDFium in Google Chrome prior to 90.0.4430.72 allowed\na remote attacker to obtain potentially sensitive information from process\nmemory via a crafted PDF file.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21219", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21219"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21219", "href": "https://ubuntu.com/security/CVE-2021-21219", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:34", "description": "Inappropriate implementation in Network in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to potentially access local UDP\nports via a crafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21210", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21210"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21210", "href": "https://ubuntu.com/security/CVE-2021-21210", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:36", "description": "Use after free in extensions in Google Chrome prior to 90.0.4430.72 allowed\nan attacker who convinced a user to install a malicious extension to\npotentially perform a sandbox escape via a crafted Chrome Extension.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21202", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21202"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21202", "href": "https://ubuntu.com/security/CVE-2021-21202", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:38", "description": "Use after free in navigation in Google Chrome prior to 90.0.4430.85 allowed\na remote attacker who had compromised the renderer process to potentially\nperform a sandbox escape via a crafted HTML page.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987358>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21226", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21226"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21226", "href": "https://ubuntu.com/security/CVE-2021-21226", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:34", "description": "Inappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a crafted\nHTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21215", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21215"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21215", "href": "https://ubuntu.com/security/CVE-2021-21215", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:32", "description": "Insufficient validation of untrusted input in Mojo in Google Chrome prior\nto 90.0.4430.72 allowed a remote attacker who had compromised the renderer\nprocess to leak cross-origin data via a crafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21221", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21221"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21221", "href": "https://ubuntu.com/security/CVE-2021-21221", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:34", "description": "Inappropriate implementation in storage in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to leak cross-origin data via a\ncrafted HTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21209", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21209"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21209", "href": "https://ubuntu.com/security/CVE-2021-21209", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:35", "description": "Incorrect security UI in Network Config UI in Google Chrome on ChromeOS\nprior to 90.0.4430.72 allowed a remote attacker to potentially compromise\nWiFi connection security via a malicious WAP.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21212", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21212", "href": "https://ubuntu.com/security/CVE-2021-21212", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:39", "description": "Integer overflow in Mojo in Google Chrome prior to 90.0.4430.85 allowed a\nremote attacker who had compromised the renderer process to potentially\nperform a sandbox escape via a crafted HTML page.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987358>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21223", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21223"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21223", "href": "https://ubuntu.com/security/CVE-2021-21223", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:37", "description": "Out of bounds memory access in V8 in Google Chrome prior to 90.0.4430.85\nallowed a remote attacker to potentially exploit heap corruption via a\ncrafted HTML page.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987358>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21225", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21225"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21225", "href": "https://ubuntu.com/security/CVE-2021-21225", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-02-03T13:37:38", "description": "Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a\nremote attacker who had compromised the renderer process to bypass site\nisolation via a crafted HTML page.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987358>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21222", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21222", "href": "https://ubuntu.com/security/CVE-2021-21222", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-02-03T13:37:33", "description": "Inappropriate implementation in Autofill in Google Chrome prior to\n90.0.4430.72 allowed a remote attacker to spoof security UI via a crafted\nHTML page.\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21216", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21216"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21216", "href": "https://ubuntu.com/security/CVE-2021-21216", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-02-03T13:37:37", "description": "Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a\nremote attacker to execute arbitrary code inside a sandbox via a crafted\nHTML page.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987358>\n\n\n#### Notes\n\nAuthor| Note \n---|--- \n[alexmurray](<https://launchpad.net/~alexmurray>) | The Debian chromium source package is called chromium-browser in Ubuntu \n[mdeslaur](<https://launchpad.net/~mdeslaur>) | starting with Ubuntu 19.10, the chromium-browser package is just a script that installs the Chromium snap\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21224", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2021-04-26T00:00:00", "id": "UB:CVE-2021-21224", "href": "https://ubuntu.com/security/CVE-2021-21224", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "debiancve": [{"lastseen": "2023-03-27T06:08:25", "description": "Insufficient policy enforcement in navigation in Google Chrome on iOS prior to 90.0.4430.72 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2021-04-26T17:15:00", "type": "debiancve", "title": "CVE-2021-21205", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21205"], "modified": "2021-04-26T17:15:00", "id": "DEBIANCVE:CVE-2021-21205", "href": "https://security-tracker.debian.org/tracker/CVE-2021-21205", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2023-03-27T06:08:25", "description": "Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-26T17:15:00", "type": "debiancve", "title": "CVE-2021-21207", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21207"], "modified": "2021-04-26T17:15:00", "id": "DEBIANCVE:CVE-2021-21207", "href": "https://security-tracker.debian.org/tracker/CVE-2021-21207", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-27T06:08:25", "description": "Uninitialized data in PDFium in Google Chrome prior to 90.0.4430.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted PDF file.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T17:15:00", "type": "debiancve", "title": "CVE-2021-21218", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21218"], "modified": "2021-04-26T17:15:00", "id": "DEBIANCVE:CVE-2021-21218", "href": "https://security-tracker.debian.org/tracker/CVE-2021-21218", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2023-03-27T06:08:25", "description": "Use after free in Blink in Google Chrome on OS X prior to 90.0.4430.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T17:15:00", "type": "debiancve", "title": "CVE-2021-21204", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21204"], "modified": "2021-04-26T17:15:00", "id": "DEBIANCVE:CVE-2021-21204", "href": "https://security-tracker.debian.org/tracker/CVE-2021-21204", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-27T06:08:25", "description": "Insufficient data validation in QR scanner in Google Chrome on iOS prior to 90.0.4430.72 allowed an attacker displaying a QR code to perform domain spoofing via a crafted QR code.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", 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"CVE-2021-21222", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-21222", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}, "cpe23": ["cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"]}, {"lastseen": "2023-02-09T14:06:13", "description": "Inappropriate implementation in Autofill in Google Chrome prior to 90.0.4430.72 allowed a remote attacker to spoof security UI via a crafted HTML page.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-26T17:15:00", "type": "cve", "title": "CVE-2021-21216", "cwe": ["CWE-290"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21216"], "modified": "2021-06-01T15:10:00", "cpe": ["cpe:/o:fedoraproject:fedora:32", "cpe:/o:fedoraproject:fedora:33", "cpe:/o:debian:debian_linux:10.0", "cpe:/o:fedoraproject:fedora:34"], "id": "CVE-2021-21216", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-21216", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}, "cpe23": ["cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"]}, {"lastseen": "2023-02-09T14:06:15", "description": "Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T17:15:00", "type": "cve", "title": "CVE-2021-21224", "cwe": ["CWE-843"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2021-06-01T15:22:00", "cpe": ["cpe:/o:fedoraproject:fedora:32", "cpe:/o:fedoraproject:fedora:33", "cpe:/o:debian:debian_linux:10.0", "cpe:/o:fedoraproject:fedora:34"], "id": "CVE-2021-21224", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-21224", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}, "cpe23": ["cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"]}], "veracode": [{"lastseen": "2022-07-26T16:30:05", "description": "chromium is vulnerable to authorization bypass. Insufficient policy enforcement in navigation allows an attacker to bypass permissions check.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.2}, "published": "2021-04-21T17:43:25", "type": "veracode", "title": "Authorization Bypass", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 5.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 4.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21205"], "modified": "2021-06-03T19:39:29", "id": "VERACODE:30081", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30081/summary", "cvss": {"score": 5.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:N"}}, {"lastseen": "2022-07-26T13:51:03", "description": "chromium is vulnerable to arbitrary code execution. A use-after-free in IndexedDB allows an attacker to execute arbitrary code on the host OS.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-21T17:43:22", "type": "veracode", "title": "Arbitrary Code Execution", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21207"], "modified": "2021-06-03T17:39:25", "id": "VERACODE:30079", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30079/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:03", "description": "chromium:sid is vulnerable to denial of service. An uninitialized use security issue has been found in the PDFium component of the Chromium browser. \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:00", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21218"], "modified": "2021-06-01T17:14:13", "id": "VERACODE:30068", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30068/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T13:50:56", "description": "chromium is vulnerable to remote code execution. The vulnerability exists due to a use-after-free error within the Blink component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-21T17:43:26", "type": "veracode", "title": "CVE-2021-21204", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21204"], "modified": "2021-06-01T23:14:11", "id": "VERACODE:30082", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30082/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:00", "description": "chromium is vulnerable to information disclosure. The vulnerability exists due to insufficient validation of user-supplied input in QR scanner in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:21", "type": "veracode", "title": "CVE-2021-21208", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21208"], "modified": "2021-06-03T17:39:26", "id": "VERACODE:30078", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30078/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-26T16:45:01", "description": "chromium is vulnerable to denial of service. The vulnerability exists due to usage of uninitialized resources in PDFium in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and crash the browser.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:00", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21217"], "modified": "2022-07-13T12:56:21", "id": "VERACODE:30069", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30069/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T13:51:04", "description": "chromium is vulnerable to arbitrary code execution. A use-after-free in permissions allows an attacker to execute arbitrary code on the host OS.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-21T17:43:29", "type": "veracode", "title": "Arbitrary Code Execution", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21201"], "modified": "2021-06-02T17:13:54", "id": "VERACODE:30085", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30085/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T13:51:00", "description": "chromium:sid is vulnerable to use after free.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-21T17:43:27", "type": "veracode", "title": "Use After Free", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21203"], "modified": "2021-06-01T23:14:12", "id": "VERACODE:30083", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30083/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T13:51:01", "description": "chromium is vulnerable to arbitrary code execution. A Use after free in WebMIDI allows an attacker to execute arbitrary code on the host OS.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-21T17:43:03", "type": "veracode", "title": "Arbitrary Code Execution", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21213"], "modified": "2021-06-01T21:14:08", "id": "VERACODE:30073", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30073/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:00", "description": "chromium is vulnerable to information disclosure. The vulnerability exists due to incorrect implementation in Navigation in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:06", "type": "veracode", "title": "Information Disclosure", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21211"], "modified": "2021-06-01T21:14:09", "id": "VERACODE:30075", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30075/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T13:50:56", "description": "chromium is vulnerable to information disclosure. The vulnerability exists due to a use-after-free error within Network API in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a use-after-free error and gain access to sensitive information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-21T17:43:02", "type": "veracode", "title": "Information Disclosure", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21214"], "modified": "2021-06-01T21:14:07", "id": "VERACODE:30072", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30072/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:12", "description": "chromium is vulnerable to arbitrary code execution. An Uninitialized Use in PDFium allows an attacker to execute arbitrary code on the host OS.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:42:59", "type": "veracode", "title": "Arbitrary Code Execution", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21219"], "modified": "2022-07-13T12:55:12", "id": "VERACODE:30067", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30067/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T16:45:08", "description": "chromium is vulnerable to privilege escalation. Inappropriate implementation in Network allows an attacker to perform an action which is otherwise not permitted.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:07", "type": "veracode", "title": "Privilege Escalation", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21210"], "modified": "2022-07-13T12:55:16", "id": "VERACODE:30076", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30076/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-26T13:50:51", "description": "chromium is vulnerable to remote code execution. The vulnerability exists due to a use after free in navigation.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-23T23:06:05", "type": "veracode", "title": "Remote Code Execution (RCE)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21226"], "modified": "2021-06-03T17:39:20", "id": "VERACODE:30145", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30145/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T13:51:01", "description": "chromium is vulnerable to remote code execution. The vulnerability exists due to a use-after-free error within the extensions component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system. \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-21T17:43:28", "type": "veracode", "title": "Remote Code Execution (RCE)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21202"], "modified": "2021-06-01T23:14:12", "id": "VERACODE:30084", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30084/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:04", "description": "chromium:sid is vulnerable to validation bypass. An insufficient validation of untrusted input security issue has been found in the Mojo component of the Chromium browser before version 90.0.4430.72. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:42:46", "type": "veracode", "title": "Validation Bypass", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21221"], "modified": "2021-06-01T17:14:08", "id": "VERACODE:30065", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30065/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T16:45:05", "description": "chromium:sid is vulnerable to Incorrect calculation. An inappropriate implementation security issue has been found in the Autofill component of the Chromium browser. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:02", "type": "veracode", "title": "Incorrect Calculation", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21215"], "modified": "2021-06-01T19:14:04", "id": "VERACODE:30071", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30071/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-26T16:45:21", "description": "chromium:sid is haviing an inappropriate implementation in storage. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:20", "type": "veracode", "title": "Inappropriate Implementation In Storage", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21209"], "modified": "2021-06-01T21:14:11", "id": "VERACODE:30077", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30077/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T16:45:04", "description": "Google Chrome is vulnerable to arbitrary code execution. A vulnerability exists in the \u2018Network Config UI\u2019 component due to certain improper \u2018security UI\u2019. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:04", "type": "veracode", "title": "Arbitrary Code Execution", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21212"], "modified": "2021-06-01T21:14:08", "id": "VERACODE:30074", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30074/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-26T13:50:52", "description": "chromium is vulnerable to denial of service. An integer overflow bug allows an attacker to crash the application.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-04-23T22:52:50", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21223"], "modified": "2021-06-01T17:14:12", "id": "VERACODE:30143", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30143/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T13:50:53", "description": "chromium is vulnerable to denial of service. An out-of-bounds memory access in V8 allows an attacker to crash the application, and potentially obtain confidential information.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-23T23:06:07", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21225"], "modified": "2021-06-01T17:14:02", "id": "VERACODE:30146", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30146/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-07-26T16:45:02", "description": "chromium:sid is vulnerable to denial of service. A heap buffer overflow vulnerability that exists in the \u2018V8' component. \n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-23T22:53:31", "type": "veracode", "title": "Denial Of Service (DoS)", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21222"], "modified": "2021-06-01T17:14:05", "id": "VERACODE:30144", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30144/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-07-26T16:45:10", "description": "chromium is vulnerable to privilege escalatopm. Inappropriate implementation in Autofill allows an attacker to perform an action which would otherwise be restricted\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-04-21T17:43:01", "type": "veracode", "title": "Privilege Escalation", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21216"], "modified": "2021-06-01T17:14:07", "id": "VERACODE:30070", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30070/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-26T13:50:50", "description": "chromium is vulnerable to type confusion. The vulnerability is triggered by performing integer data type conversion, creating an out-of-bounds condition that could cause arbitrary memory read/write primitive.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-23T23:06:09", "type": "veracode", "title": "Type Confusion", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2021-06-01T17:14:05", "id": "VERACODE:30147", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-30147/summary", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "redhatcve": [{"lastseen": "2022-05-21T01:07:04", "description": "Use after free in Blink in Google Chrome on OS X prior to 90.0.4430.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2022-05-21T00:16:08", "type": "redhatcve", "title": "CVE-2021-21204", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21204"], "modified": "2022-05-21T00:16:08", "id": "RH:CVE-2021-21204", "href": "https://access.redhat.com/security/cve/cve-2021-21204", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-21T01:07:06", "description": "Inappropriate implementation in storage in Google Chrome prior to 90.0.4430.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-05-20T22:41:04", "type": "redhatcve", "title": "CVE-2021-21209", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21209"], "modified": "2022-05-20T22:41:04", "id": "RH:CVE-2021-21209", "href": "https://access.redhat.com/security/cve/cve-2021-21209", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}, {"lastseen": "2022-05-21T01:07:04", "description": "Inappropriate implementation in Autofill in Google Chrome prior to 90.0.4430.72 allowed a remote attacker to spoof security UI via a crafted HTML page.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2022-05-20T22:31:11", "type": "redhatcve", "title": "CVE-2021-21216", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21216"], "modified": "2022-05-20T22:31:11", "id": "RH:CVE-2021-21216", "href": "https://access.redhat.com/security/cve/cve-2021-21216", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "cnvd": [{"lastseen": "2022-11-05T10:59:55", "description": "Google Chrome, a web browser from Google, is vulnerable to information disclosure. A remote attacker could use a specially crafted PDF file to obtain potentially sensitive information from process memory.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-06-19T00:00:00", "type": "cnvd", "title": "Google Chrome is vulnerable to information disclosure (CNVD-2021-47672)", "bulletinFamily": "cnvd", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21219"], "modified": "2021-08-31T00:00:00", "id": "CNVD-2021-47672", "href": "https://www.cnvd.org.cn/flaw/show/CNVD-2021-47672", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}}], "checkpoint_advisories": [{"lastseen": "2022-02-16T19:32:49", "description": "A heap corruption vulnerability exists in Google Chrome. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-09-29T00:00:00", "type": "checkpoint_advisories", "title": "Google Chrome Heap Corruption (CVE-2021-21225)", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21225"], "modified": "2021-09-29T00:00:00", "id": "CPAI-2021-0529", "href": "", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-02-16T19:29:27", "description": "A remote code execution vulnerability exists in Google Chrome. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2022-01-16T00:00:00", "type": "checkpoint_advisories", "title": "Google Chrome Remote Code Execution (CVE-2021-21224)", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2022-01-16T00:00:00", "id": "CPAI-2021-0952", "href": "", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "githubexploit": [{"lastseen": "2022-03-23T15:42:49", "description": "# CVE-2021-21224\nChrom...", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-11-28T01:10:54", "type": "githubexploit", "title": "Exploit for Type Confusion in Google Chrome", "bulletinFamily": "exploit", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2022-02-15T06:55:14", "id": "CAE25BF5-2DB9-5000-8FF9-CC2EAA626ECE", "href": "", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}, "privateArea": 1}], "cisa_kev": [{"lastseen": "2022-08-10T17:26:47", "description": "Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-11-03T00:00:00", "type": "cisa_kev", "title": "Chromium V8 JavaScript Engine Remote Code Execution Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224"], "modified": "2021-11-03T00:00:00", "id": "CISA-KEV-CVE-2021-21224", "href": "", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "thn": [{"lastseen": "2022-05-09T12:38:19", "description": "[](<https://thehackernews.com/images/-wb_mRqoRlJs/YH_fh-jU73I/AAAAAAAACUg/PjdPBbIeXIQL_vuc_D3kAe7us4v9piwdwCLcBGAsYHQ/s0/chrome-update.jpg>)\n\nGoogle on Tuesday released an update for Chrome web browser for Windows, Mac, and Linux, with a total of seven security fixes, including one flaw for which it says an exploit exists in the wild.\n\nTracked as **CVE-2021-21224**, the flaw concerns a type confusion vulnerability in V8 open-source JavaScript engine that was reported to the company by security researcher Jose Martinez on April 5\n\nAccording to security researcher [Lei Cao](<https://iamelli0t.github.io/2021/04/20/Chromium-Issue-1196683-1195777.html#rca-of-issue-1195777>), the bug [[1195777](<https://bugs.chromium.org/p/chromium/issues/detail?id=1195777>)] is triggered when performing integer data type conversion, resulting in an out-of-bounds condition that could be used to achieve arbitrary memory read/write primitive.\n\n\"Google is aware of reports that exploits for CVE-2021-21224 exist in the wild,\" Chrome's Technical Program Manager Srinivas Sista [said](<https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html>) in a blog post.\n\n[](<https://thehackernews.com/images/-MqsPXUEBIAs/YH_gSVGkWZI/AAAAAAAACUw/ZOCKPD3LhzYIiPehN7StsViTVlFaKHhyACLcBGAsYHQ/s0/chrome-code.jpg>)\n\nThe update comes after proof-of-concept (PoC) [code](<https://noahblog.360.cn/chromium_v8_remote_code_execution_vulnerability_analysis/>) exploiting the flaw published by a researcher named \"[frust](<https://twitter.com/frust93717815/status/1382301769577861123>)\" emerged on April 14 by taking advantage of the fact that the issue was addressed in the [V8 source code](<https://chromium-review.googlesource.com/c/v8/v8/+/2826114/3/src/compiler/representation-change.cc>), but the patch was not integrated into the Chromium codebase and all the browsers that rely on it, such as Chrome, Microsoft Edge, Brave, Vivaldi, and Opera.\n\nThe one-week patch gap meant the browsers were vulnerable to attacks until the patches posted in the open-source code repository were released as a stable update.\n\nIt's worth noting that Google [halved](<https://groups.google.com/a/chromium.org/g/security-dev/c/fbiuFbW07vI>) the median \"patch gap\" from 33 days in Chrome 76 to 15 days in Chrome 78, which was released in October 2019, thereby pushing severe security fixes every two weeks.\n\nThe latest set of fixes also arrive close on the heels of an update the search giant rolled out [last week](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) with [patches for two security vulnerabilities](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) CVE-2021-21206 and CVE-2021-21220, the latter of which was demonstrated at the Pwn2Own [2021 hacking](<https://thehackernews.com/hacker/>) contest earlier this month.\n\nChrome 90.0.4430.85 is expected to roll out in the coming days. Users can update to the latest version by heading to Settings &gt; Help &gt; About Google Chrome to mitigate the risk associated with the flaws.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-21T08:20:00", "type": "thn", "title": "Update Your Chrome Browser ASAP to Patch a Week Old Public Exploit", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224"], "modified": "2021-04-21T08:30:40", "id": "THN:FF8DAEC0AE0DDAE827D57407C51BE992", "href": "https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:37:59", "description": "[](<https://thehackernews.com/images/-Oinzu8T6SmI/YMBZ7WkhbJI/AAAAAAAACzI/kVA4Ura4Yl4MrNb_jPNPBtgjkBj1DSs1wCLcBGAsYHQ/s0/microsoft-windows-update.jpg>)\n\nMicrosoft on Tuesday released another round of [security updates](<https://msrc.microsoft.com/update-guide/releaseNote/2021-Jun>) for Windows operating system and other supported software, squashing 50 vulnerabilities, including six zero-days that are said to be under active attack.\n\nThe flaws were identified and resolved in Microsoft Windows, .NET Core and Visual Studio, Microsoft Office, Microsoft Edge (Chromium-based and EdgeHTML), SharePoint Server, Hyper-V, Visual Studio Code - Kubernetes Tools, Windows HTML Platform, and Windows Remote Desktop.\n\nOf these 50 bugs, five are rated Critical, and 45 are rated Important in severity, with three of the issues publicly known at the time of release. The vulnerabilities that being actively exploited are listed below -\n\n * [**CVE-2021-33742**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33742>) (CVSS score: 7.5) - Windows MSHTML Platform Remote Code Execution Vulnerability\n * [**CVE-2021-33739**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33739>) (CVSS score: 8.4) - Microsoft DWM Core Library Elevation of Privilege Vulnerability\n * [**CVE-2021-31199**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31199>) (CVSS score: 5.2) - Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability\n * [**CVE-2021-31201**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31201>) (CVSS score: 5.2) - Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability\n * [**CVE-2021-31955**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955>) (CVSS score: 5.5) - Windows Kernel Information Disclosure Vulnerability\n * [**CVE-2021-31956**](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31956>) (CVSS score: 7.8) - Windows NTFS Elevation of Privilege Vulnerability\n\nMicrosoft didn't disclose the nature of the attacks, how widespread they are, or the identities of the threat actors exploiting them. But the fact that four of the six flaws are privilege escalation vulnerabilities suggests that attackers could be leveraging them as part of an infection chain to gain elevated permissions on the targeted systems to execute malicious code or leak sensitive information.\n\nThe Windows maker also noted that both CVE-2021-31201 and CVE-2021-31199 address flaws related to [CVE-2021-28550](<https://thehackernews.com/2021/05/alert-hackers-exploit-adobe-reader-0.html>), an arbitrary code execution vulnerability rectified by Adobe last month that it said was being \"exploited in the wild in limited attacks targeting Adobe Reader users on Windows.\"\n\nGoogle's Threat Analysis Group, which has been acknowledged as having reported CVE-2021-33742 to Microsoft, [said](<https://twitter.com/ShaneHuntley/status/1402320072123719690>) \"this seem[s] to be a commercial exploit company providing capability for limited nation state Eastern Europe / Middle East targeting.\"\n\nRussian cybersecurity firm Kaspersky, for its part, detailed that CVE-2021-31955 and CVE-2021-31956 were abused in a Chrome zero-day exploit chain ([CVE-2021-21224](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>)) in a series of highly targeted attacks against multiple companies on April 14 and 15. The intrusions were attributed to a new threat actor dubbed \"PuzzleMaker.\"\n\n\"While we were not able to retrieve the exploit used for remote code execution (RCE) in the Chrome web browser, we were able to find and analyze an elevation of privilege (EoP) exploit that was used to escape the sandbox and obtain system privileges,\" Kaspersky Lab researchers [said](<https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/>).\n\nElsewhere, Microsoft fixed numerous remote code execution vulnerabilities spanning Paint 3D, Microsoft SharePoint Server, Microsoft Outlook, Microsoft Office Graphics, Microsoft Intune Management Extension, Microsoft Excel, and Microsoft Defender, as well as several privilege escalation flaws in Microsoft Edge, Windows Filter Manager, Windows Kernel, Windows Kernel-Mode Driver, Windows NTLM Elevation, and Windows Print Spooler.\n\nTo install the latest security updates, Windows users can head to Start &gt; Settings &gt; Update &amp; Security &gt; Windows Update or by selecting Check for Windows updates.\n\n### Software Patches From Other Vendors\n\nAlongside Microsoft, a number of other vendors have also released a slew of patches on Tuesday, including \u2014\n\n * [Adobe](<https://helpx.adobe.com/security.html>)\n * [Android](<https://source.android.com/security/bulletin/2021-06-01>)\n * [Dell](<https://www.dell.com/support/security/>)\n * [Intel](<https://blogs.intel.com/technology/2021/06/intel-security-advisories-for-june-2021/>)\n * Linux distributions [SUSE](<https://lists.suse.com/pipermail/sle-security-updates/2021-June/thread.html>), [Oracle Linux](<https://linux.oracle.com/ords/f?p=105:21>), and [Red Hat](<https://access.redhat.com/security/security-updates/#/security-advisories?q=&p=2&sort=portal_publication_date%20desc&rows=10&portal_advisory_type=Security%20Advisory&documentKind=Errata>)\n * [SAP](<https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999>) (with cybersecurity firm Onapsis [credited](<https://onapsis.com/blog/sap-security-patch-day-june-2021-multiple-memory-corruption-vulnerabilities-can-lead-system>) with identifying 20 of the 40 remediated flaws)\n * [Schneider Electric](<https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp>), and\n * [Siemens](<https://new.siemens.com/global/en/products/services/cert.html#SecurityPublications>)\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-06-09T06:07:00", "type": "thn", "title": "Update Your Windows Computers to Patch 6 New In-the-Wild Zero-Day Bugs", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224", "CVE-2021-28550", "CVE-2021-31199", "CVE-2021-31201", "CVE-2021-31955", "CVE-2021-31956", "CVE-2021-33739", "CVE-2021-33742"], "modified": "2021-06-09T16:52:54", "id": "THN:1DDE95EA33D4D9F304973569FC787451", "href": "https://thehackernews.com/2021/06/update-your-windows-computers-to-patch.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:37:58", "description": "[](<https://thehackernews.com/images/--v2cn8JGV00/YMGRd9cFvrI/AAAAAAAACz4/i5Stk6m4GEgwbul82T6lZeEbdMMNfofJQCLcBGAsYHQ/s0/chrome-zero-day-vulnerability.jpg>)\n\nAttention readers, if you are using Google Chrome browser on your Windows, Mac, or Linux computers, you need to update it immediately to the latest version Google released earlier today.\n\nThe internet services company has rolled out an urgent update to the browser to address 14 newly discovered security issues, including a zero-day flaw that it says is being actively exploited in the wild.\n\nTracked as [CVE-2021-30551](<https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html>), the vulnerability stems from a type confusion issue in its V8 open-source and JavaScript engine. Sergei Glazunov of Google Project Zero has been credited with discovering and reporting the flaw.\n\nAlthough the search giant's Chrome team issued a terse statement acknowledging \"an exploit for CVE-2021-30551 exists in the wild,\" Shane Huntley, Director of Google's Threat Analysis Group, [hinted](<https://twitter.com/ShaneHuntley/status/1402712986289016835>) that the vulnerability was leveraged by the same actor that abused [CVE-2021-33742](<https://thehackernews.com/2021/06/update-your-windows-computers-to-patch.html>), an actively exploited remote code execution flaw in Windows MSHTML platform that was addressed by Microsoft as part of its Patch Tuesday update on June 8.\n\n[](<https://thehackernews.com/images/-XI4fkisfDp0/YMGPq0RtpKI/AAAAAAAACzw/d0mpshr20nw2j--sOXxBrrTJIj2IP95ewCLcBGAsYHQ/s0/chrome-zero-day.jpg>)\n\nThe two zero-days are said to have been provided by a commercial exploit broker to a nation-state actor, which used them in limited attacks against targets in Eastern Europe and the Middle East, Huntley said.\n\nMore technical details about the nature of the attacks are to be released in the coming weeks so as to allow a majority of the users to install the update and prevent other threat actors from creating exploits targeting the flaw.\n\nWith the latest fix, Google has addressed a total of seven zero-days in Chrome since the start of the year \u2014\n\n * [**CVE-2021-21148**](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [**CVE-2021-21166**](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [**CVE-2021-21193**](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21206**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21220**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [**CVE-2021-21224**](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n\nChrome users can update to the latest version (91.0.4472.101) by heading to Settings &gt; Help &gt; About Google Chrome to mitigate the risk associated with the flaw.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-06-10T04:14:00", "type": "thn", "title": "New Chrome 0-Day Bug Under Active Attacks \u2013 Update Your Browser ASAP!", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-33742"], "modified": "2021-06-10T10:25:50", "id": "THN:7D7C05739ECD847B8CDEEAF930C51BF8", "href": "https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:39:20", "description": "[](<https://thehackernews.com/images/--Br-zb7NQb0/YPEUTqMvgsI/AAAAAAAADNw/cesEHjkHFKgyqC_MTP_ji5iUXUCeqoH1QCLcBGAsYHQ/s0/chrome-update.jpg>)\n\nGoogle has pushed out a new security update to Chrome browser for Windows, Mac, and Linux with multiple fixes, including a zero-day that it says is being exploited in the wild.\n\nThe latest patch resolves a total of eight issues, one of which concerns a type confusion issue in its V8 open-source and JavaScript engine ([CVE-2021-30563](<https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.html>)). The search giant credited an anonymous researcher for reporting the flaw on July 12.\n\nAs is usually the case with actively exploited flaws, the company issued a terse statement acknowledging that \"an exploit for CVE-2021-30563 exists in the wild\" while refraining from sharing full details about the underlying vulnerability used in the attacks due to its serious nature and the possibility that doing so could lead to further abuse.\n\nCVE-2021-30563 also marks the ninth zero-day addressed by Google to combat real-world attacks against Chrome users since the start of the year \u2014\n\n * [**CVE-2021-21148**](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [**CVE-2021-21166**](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [**CVE-2021-21193**](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21206**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21220**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [**CVE-2021-21224**](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [**CVE-2021-30551**](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [**CVE-2021-30554**](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n\nChrome users are advised to update to the latest version (91.0.4472.164) by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate the risk associated with the flaw.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-07-16T05:08:00", "type": "thn", "title": "Update Your Chrome Browser to Patch New Zero\u2011Day Bug Exploited in the Wild", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563"], "modified": "2021-07-16T05:08:47", "id": "THN:C736174C6B0ADC38AA88BC58F30271DA", "href": "https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:37:19", "description": "[](<https://thehackernews.com/images/-FOgCdN3CSOk/YUAgGS1bB1I/AAAAAAAADyc/2oKkq_Mon1AnpsrRVosSNgmXm6ZdbQTXACLcBGAsYHQ/s0/chrome-update.jpg>)\n\nGoogle on Monday released security updates for Chrome web browser to address a total of 11 security issues, two of which it says are actively exploited zero-days in the wild.\n\nTracked as **CVE-2021-30632** and **CVE-2021-30633**, the [vulnerabilities](<https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html>) concern an out of bounds write in V8 JavaScript engine and a use after free flaw in Indexed DB API respectively, with the internet giant crediting anonymous researchers for reporting the bugs on September 8.\n\nAs is typically the case, the company said it's \"aware that exploits for CVE-2021-30632 and CVE-2021-30633 exist in the wild\" without sharing additional specifics about how, when, and where the vulnerabilities were exploited, or the threat actors that may be abusing them.\n\nWith these two security shortcomings, Google has addressed a total of 11 zero-day vulnerabilities in Chrome since the start of the year \u2014\n\n * [**CVE-2021-21148**](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [**CVE-2021-21166**](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [**CVE-2021-21193**](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21206**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21220**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [**CVE-2021-21224**](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [**CVE-2021-30551**](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [**CVE-2021-30554**](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n * [**CVE-2021-30563**](<https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html>) \\- Type confusion in V8\n\nChrome users are advised to update to the latest version (93.0.4577.82) for Windows, Mac, and Linux by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate the risk associated with the flaws.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-09-14T04:08:00", "type": "thn", "title": "Update Google Chrome to Patch 2 New Zero-Day Flaws Under Attack", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633"], "modified": "2021-09-19T08:13:46", "id": "THN:1A836FDDE57334BC4DAFA65E6DFA02E4", "href": "https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:37:16", "description": "[](<https://thehackernews.com/images/-EBTuV2RF5wo/YU6_b4n3Y4I/AAAAAAAAD5w/Rv4cfNWgTzsitUR4O-m9Hoo5Jsb-IyxJACLcBGAsYHQ/s0/chrome-update.jpg>)\n\nGoogle on Friday rolled out an emergency security patch to its Chrome web browser to address a security flaw that's known to have an exploit in the wild.\n\nTracked as [CVE-2021-37973](<https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_24.html>), the vulnerability has been described as [use after free](<https://cwe.mitre.org/data/definitions/416.html>) in [Portals API](<https://web.dev/hands-on-portals/>), a web page navigation system that enables a page to show another page as an inset and \"perform a seamless transition to a new state, where the formerly-inset page becomes the top-level document.\"\n\nCl\u00e9ment Lecigne of Google Threat Analysis Group (TAG) has been credited with reporting the flaw. Additional specifics pertaining to the weakness have not been disclosed in light of active exploitation and to allow a majority of the users to apply the patch, but the internet giant said it's \"aware that an exploit for CVE-2021-37973 exists in the wild.\"\n\nThe update arrives a day after Apple moved to close an actively exploited security hole in older versions of iOS and macOS ([CVE-2021-30869](<https://thehackernews.com/2021/09/urgent-apple-ios-and-macos-updates.html>)), which the TAG noted as being \"used in conjunction with a N-day remote code execution targeting WebKit.\" With the latest fix, Google has addressed a total of [12 zero-day flaws in Chrome](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) since the start of 2021:\n\n * [CVE-2021-21148](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [CVE-2021-21166](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [CVE-2021-21193](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [CVE-2021-21206](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [CVE-2021-21220](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [CVE-2021-21224](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [CVE-2021-30551](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [CVE-2021-30554](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n * [CVE-2021-30563](<https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html>) \\- Type confusion in V8\n * [CVE-2021-30632](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Out of bounds write in V8\n * [CVE-2021-30633](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Use-after-free in Indexed DB API\n\nChrome users are advised to update to the latest version (94.0.4606.61) for Windows, Mac, and Linux by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate the risk associated with the flaw.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-09-25T06:39:00", "type": "thn", "title": "Urgent Chrome Update Released to Patch Actively Exploited Zero-Day Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633", "CVE-2021-30869", "CVE-2021-37973"], "modified": "2021-09-27T04:38:24", "id": "THN:6A9CD6F085628D08978727C0FF597535", "href": "https://thehackernews.com/2021/09/urgent-chrome-update-released-to-patch.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:37:14", "description": "[](<https://thehackernews.com/new-images/img/a/AVvXsEggQTDQ-V9WbcSJKwsXKGeYWFxP3jSKikqYhYG8xpFa_NiB7aFJV8tcR11eRFpoq9nIOMlHfbefT2pZC9vdUHCul3SAafHr4t5T-oIIj-H61WEAlv8x9Mfzo1cqzuxor4bqF090P_C7w7fQqzoSFEmUVm1PvbmzU9YENMC2O_ZAEkOC_qbBbzYZdzhA>)\n\nGoogle on Thursday pushed urgent security fixes for its Chrome browser, including a pair of new security weaknesses that the company said are being exploited in the wild, making them the fourth and fifth actively zero-days plugged this month alone.\n\nThe issues, designated as [CVE-2021-37975 and CVE-2021-37976](<https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_30.html>), are part of a total of four patches, and concern a [use-after-free flaw](<https://cwe.mitre.org/data/definitions/416.html>) in V8 JavaScript and WebAssembly engine as well as an information leak in core.\n\nAs is usually the case, the tech giant has refrained from sharing any additional details regarding how these zero-day vulnerabilities were used in attacks so as to allow a majority of users to be updated with the patches, but noted that it's aware that \"exploits for CVE-2021-37975 and CVE-2021-37976 exist in the wild.\"\n\nAn anonymous researcher has been credited with reporting CVE-2021-37975. The discovery of CVE-2021-37976, on the other hand, involves Cl\u00e9ment Lecigne from Google Threat Analysis Group, who was also credited with [CVE-2021-37973](<https://thehackernews.com/2021/09/urgent-chrome-update-released-to-patch.html>), another actively exploited use-after-free vulnerability in Chrome's Portals API that was reported last week, raising the possibility that the two flaws may have been stringed together as part of an exploit chain to execute arbitrary code.\n\nWith the latest update, Google has addressed a record 14 zero-days in the web browser since the start of the year.\n\n * [CVE-2021-21148](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [CVE-2021-21166](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [CVE-2021-21193](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [CVE-2021-21206](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [CVE-2021-21220](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [CVE-2021-21224](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [CVE-2021-30551](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [CVE-2021-30554](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n * [CVE-2021-30563](<https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html>) \\- Type confusion in V8\n * [CVE-2021-30632](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Out of bounds write in V8\n * [CVE-2021-30633](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Use-after-free in Indexed DB API\n * [CVE-2021-37973](<https://thehackernews.com/2021/09/urgent-chrome-update-released-to-patch.html>) \\- Use-after-free in Portals\n\nChrome users are advised to update to the latest version (94.0.4606.71) for Windows, Mac, and Linux by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate any potential risk of active exploitation.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-10-01T03:30:00", "type": "thn", "title": "Update Google Chrome ASAP to Patch 2 New Actively Exploited Zero-Day Flaws", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633", "CVE-2021-37973", "CVE-2021-37975", "CVE-2021-37976"], "modified": "2021-10-05T05:27:09", "id": "THN:50D7C51FE6D69FC5DB5B37402AD0E412", "href": "https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:38:09", "description": "[](<https://thehackernews.com/new-images/img/a/AVvXsEgMs77BPvPvj6P-3E7i08R8I_ixvGQZgvS5p1CxbhBqiARNzNLx3R6X1fYdCRjiQmZfLY3-6HUY_hPXAucE_jFVypFTV0HG0XIru72uSOfwfn3mMcLC9j6XyeOCF7We4fYjthQ17-YmGUSvhPWEOlnBXakT_9U8IYdpMKEB6GeCFMJI8ihho5D-6JUO>)\n\nGoogle on Thursday rolled out an emergency update for its Chrome web browser, including fixes for two zero-day vulnerabilities that it says are being actively exploited in the wild.\n\nTracked as **CVE-2021-38000** and **CVE-2021-38003**, the weaknesses relate to insufficient validation of untrusted input in a feature called Intents as well as a case of inappropriate implementation in V8 JavaScript and WebAssembly engine. The internet giant's Threat Analysis Group (TAG) has been credited with discovering and reporting the two flaws on September 15, 2021, and October 26, 2021, respectively.\n\n\"Google is aware that exploits for CVE-2021-38000 and CVE-2021-38003 exist in the wild,\" the company [noted](<https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html>) in an advisory without delving into technical specifics about how the two vulnerabilities were used in attacks or the threat actors that may have weaponized them.\n\nAlso addressed as part of this stable channel update is a [use-after-free](<https://cwe.mitre.org/data/definitions/416.html>) vulnerability in the Web Transport component (CVE-2021-38002), which was demonstrated for the first time at the [Tianfu Cup](<https://thehackernews.com/2021/10/windows-10-linux-ios-chrome-and-many.html>) contest held earlier this month in China. With these patches, Google has resolved a record 16 zero-days in the web browser since the start of the year \u2014\n\n * [**CVE-2021-21148**](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [**CVE-2021-21166**](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [**CVE-2021-21193**](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21206**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [**CVE-2021-21220**](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [**CVE-2021-21224**](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [**CVE-2021-30551**](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [**CVE-2021-30554**](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n * [**CVE-2021-30563**](<https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html>) \\- Type confusion in V8\n * [**CVE-2021-30632**](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Out of bounds write in V8\n * [**CVE-2021-30633**](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Use-after-free in Indexed DB API\n * [**CVE-2021-37973**](<https://thehackernews.com/2021/09/urgent-chrome-update-released-to-patch.html>) \\- Use-after-free in Portals\n * [**CVE-2021-37975**](<https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html>) \\- Use-after-free in V8\n * [**CVE-2021-37976**](<https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html>) \\- Information leak in core\n\nChrome users are advised to update to the latest version (95.0.4638.69) for Windows, Mac, and Linux by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate any potential risk of active exploitation.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-10-29T04:08:00", "type": "thn", "title": "Google Releases Urgent Chrome Update to Patch 2 Actively Exploited 0-Day Bugs", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633", "CVE-2021-37973", "CVE-2021-37975", "CVE-2021-37976", "CVE-2021-38000", "CVE-2021-38002", "CVE-2021-38003"], "modified": "2021-10-29T04:08:52", "id": "THN:B7217784F9D53002315C9C43CCC73766", "href": "https://thehackernews.com/2021/10/google-releases-urgent-chrome-update-to.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:37:48", "description": "[](<https://thehackernews.com/new-images/img/a/AVvXsEibt_uA0VwMgumOtohRzrBSD-Inv5dv71ZMU1Hu4XYJFQxp8FVjEZzeLUuvttUyYx1xMxQJ16Nfw5Jdc7mPLfwoGoTeZqrLRMZ005Eu673XGL_uJrq7LDUpWojmmmN1YHSwVQcJQzL28acTco05Z7auS001HlgSR96GjvrE5gDr2M123luTRVFTFcAT>)\n\nGoogle has rolled out fixes for five security vulnerabilities in its Chrome web browser, including one which it says is being exploited in the wild, making it the [17th such weakness](<https://thehackernews.com/2021/10/google-releases-urgent-chrome-update-to.html>) to be disclosed since the start of the year.\n\nTracked as [CVE-2021-4102](<https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop_13.html>), the flaw relates to a [use-after-free bug](<https://cwe.mitre.org/data/definitions/416.html>) in the V8 JavaScript and WebAssembly engine, which could have severe consequences ranging from corruption of valid data to the execution of arbitrary code. An anonymous researcher has been credited with discovering and reporting the flaw.\n\nAs it stands, it's not known how the weakness is being abused in real-world attacks, but the internet giant issued a terse statement that said, \"it's aware of reports that an exploit for CVE-2021-4102 exists in the wild.\" This is done so in an attempt to ensure that a majority of users are updated with a fix and prevent further exploitation by other threat actors.\n\nCVE-2021-4102 is the second use-after-free vulnerability in V8 the company has remediated in less than three months following reports of active exploitation, with the previous vulnerability [CVE-2021-37975](<https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html>), also reported by an anonymous researcher, plugged in an update it shipped on September 30. It's not immediately clear if the two flaws bear any relation to one another.\n\nWith this latest update, Google has addressed a record 17 zero-days in Chrome this year alone \u2014\n\n * [CVE-2021-21148](<https://thehackernews.com/2021/02/new-chrome-browser-0-day-under-active.html>) \\- Heap buffer overflow in V8\n * [CVE-2021-21166](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) \\- Object recycle issue in audio\n * [CVE-2021-21193](<https://thehackernews.com/2021/03/another-google-chrome-0-day-bug-found.html>) \\- Use-after-free in Blink\n * [CVE-2021-21206](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Use-after-free in Blink\n * [CVE-2021-21220](<https://thehackernews.com/2021/04/2-new-chrome-0-days-under-attack-update.html>) \\- Insufficient validation of untrusted input in V8 for x86_64\n * [CVE-2021-21224](<https://thehackernews.com/2021/04/update-your-chrome-browser-immediately.html>) \\- Type confusion in V8\n * [CVE-2021-30551](<https://thehackernews.com/2021/06/new-chrome-0-day-bug-under-active.html>) \\- Type confusion in V8\n * [CVE-2021-30554](<https://thehackernews.com/2021/06/update-your-chrome-browser-to-patch-yet.html>) \\- Use-after-free in WebGL\n * [CVE-2021-30563](<https://thehackernews.com/2021/07/update-your-chrome-browser-to-patch-new.html>) \\- Type confusion in V8\n * [CVE-2021-30632](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Out of bounds write in V8\n * [CVE-2021-30633](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) \\- Use-after-free in Indexed DB API\n * [CVE-2021-37973](<https://thehackernews.com/2021/09/urgent-chrome-update-released-to-patch.html>) \\- Use-after-free in Portals \n * [CVE-2021-37975](<https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html>) \\- Use-after-free in V8\n * [CVE-2021-37976](<https://thehackernews.com/2021/09/update-google-chrome-asap-to-patch-2.html>) \\- Information leak in core\n * [CVE-2021-38000](<https://thehackernews.com/2021/10/google-releases-urgent-chrome-update-to.html>) \\- Insufficient validation of untrusted input in Intents\n * [CVE-2021-38003](<https://thehackernews.com/2021/10/google-releases-urgent-chrome-update-to.html>) \\- Inappropriate implementation in V8\n\nChrome users are recommended to update to the latest version (96.0.4664.110) for Windows, Mac, and Linux by heading to Settings &gt; Help &gt; 'About Google Chrome' to mitigate any potential risk of active exploitation.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 6.0}, "published": "2021-12-14T04:13:00", "type": "thn", "title": "Update Google Chrome to Patch New Zero-Day Exploit Detected in the Wild", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633", "CVE-2021-37973", "CVE-2021-37975", "CVE-2021-37976", "CVE-2021-38000", "CVE-2021-38003", "CVE-2021-4102"], "modified": "2021-12-14T04:30:59", "id": "THN:4CC79A3CEFEDEB0DC9CF87C5B9035209", "href": "https://thehackernews.com/2021/12/update-google-chrome-to-patch-new-zero.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "malwarebytes": [{"lastseen": "2021-10-21T14:41:47", "description": "Exploit kits (EK) are not as widespread as they used to be. One of the reasons is likely that most exploit kits targeted software that is hardly ever used anymore. Internet Explorer, Silverlight, and Flash Player to name a few, have been deprecated, replaced, and quickly lost their user-base.\n\nSo, just when you start thinking there is one less threat to worry much about, researchers have found an exploit kit with a keen interest in Chrome. Which, from a business point of view, makes a lot of sense, since Chrome is close to becoming not just a market leader, but almost a monopolist in the browser market.\n\nChrome has, at the time of writing, a market share of around 65%. The only other browser that reaches a market share that is over 10% is Safari. So if you are in the business of compromising browsers that visit your website or watch your advertisement, having Chrome users on your target list is a big plus.\n\nOr, as Malwarebytes&#x27; Director of Threat Intelligence, J\u00e9r\u00f4me Segura, put it:\n\n> &quot;The future of exploit kits is via Chrome exploits. This could either be an anomaly or the beginning of a new era with big implications for the years to come.&quot;\n\n### Magnitude EK\n\nEnter the Magnitude exploit kit. [Researchers](<https://twitter.com/AvastThreatLabs/status/1450476708939767815>) have found that the Magnitude EK is actively using two vulnerabilities to exploit Chromium-based browsers. Magnitude is used in malvertising attacks to infect victims who visit compromised websites and its payload of choice is the [Magniber ransomware](<https://blog.malwarebytes.com/threat-analysis/2018/07/magniber-ransomware-improves-expands-within-asia/>). \n\n### The vulnerabilities\n\n[CVE-2021-21224](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21224>) is described as a type confusion in V8 in Google Chrome prior to 90.0.4430.85 which allows a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. V8 is Google&#x27;s open source high-performance JavaScript and WebAssembly engine. This vulnerability was [patche](<https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html>)[d in April](<https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html>).\n\n[CVE-2021-31956](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31956>) is a Windows NTFS Elevation of Privilege (EoP) vulnerability. This vulnerability can be used in combination with CVE-2021-21224 to escape the Chromium sandbox. This vulnerability was [patched in June](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31956>).\n\n### PuzzleMaker\n\nPractically the same combination of vulnerabilities [was described in June](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/06/microsoft-fixes-seven-zero-days-including-two-puzzlemaker-targets-google-fixes-serious-android-flaw/>) when Microsoft fixed seven zero-days, including the CVE-2021-131956 we mentioned earlier. Back then, the attacker using these vulnerabilities was dubbed PuzzleMaker. At the time it was unknown which Chrome vulnerability was used by the attacker, but it&#x27;s highly likely that it was the same as Magnitude has been found leveraging now.\n\n### Payload\n\nThere is no malicious payload attached to the Magnitude exploits yet, the attack just exfiltrates the victim&#x27;s Windows build number. But reportedly, this is Magnitude EK\u2019s standard procedure to test out new exploits, so this could change quickly if they start to see positive results.\n\n### How to protect yourself\n\nIt is only on rare occasions that we write about vulnerabilities and then tell you there isn\u2019t much to worry about. But in this case, the only people that have anything to worry about are Windows users that browse the web using Chrome or Chromium based browsers (like Edge), but have disabled its automatic updates and haven\u2019t updated since April. You would also have to run on a non-updated Windows system since June, or run Chrome with the _-no-sandbox _switch (not recommended). And even then all that would happen if you ran across the Magnitude EK (which usually focuses on South Korea) is getting fingerprinted.\n\nBut you do understand that you should update your OS and browser nonetheless, right?\n\n### Enable automatic updates\n\nIf you want to save yourself the trouble of manually installing updates, there are a few things you can do. For Google Chrome (under Windows) you can choose this page as one of the tabs that opens when you run the browser: _chrome://settings/help_. If there has been an update since the last time you closed your browser, this page will alert you and initiate a download of the update.\n\nIn Windows 10 you can select the Start button, then select _Settings &gt; Update &amp; security &gt; Windows Update_. Select _Advanced options_, and then under _Choose how updates are installed_, select _Automatic (recommended)_.\n\nStay safe, everyone!\n\nThe post [Chrome targeted by Magnitude exploit kit](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/10/magnitude-ek-has-been-spotted-targeting-the-chrome-browser/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-10-21T12:47:42", "type": "malwarebytes", "title": "Chrome targeted by Magnitude exploit kit", "bulletinFamily": "blog", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-131956", "CVE-2021-21224", "CVE-2021-31956"], "modified": "2021-10-21T12:47:42", "id": "MALWAREBYTES:3322D6B92554507E3E44D06E2BA5E174", "href": "https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/10/magnitude-ek-has-been-spotted-targeting-the-chrome-browser/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-09-14T18:35:22", "description": "Google _[announced](<https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html>)_ on Monday that it will be issuing patches for 11 high severity vulnerabilities found in Chrome, including two that are currently being exploited in the wild. The patch, which is part of the Stable Channel Update for Chrome 93 (93.0.4577.82), will be released for Windows, Mac, and Linux (if it hasn\u2019t already). Chrome users are expected to see the roll out in the coming days and weeks.\n\nReaders should note that other popular browsers such as Brave and Edge are also Chromium-based and therefore likely to be vulnerable to these flaws too. Keep an eye out for updates.\n\nYou can check what version of Chrome you are running by opening About Google Chrome from the main menu.\n\nThe About Google Chrome screen tells you what version you are running and whether it is up to date\n\n### The vulnerabilities\n\nThe fixes address high severity vulnerabilities reported to Google by independent researchers from as early as August of this year. That said, the company has included names of the researchers who found the flaws in their announcement.\n\nThe two vulnerabilities that are being actively exploited\u2014namely, [CVE-2021-30632](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30632>) and [CVE-2021-30633](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30633>)\u2014were submitted anonymously. The former is an &quot;Out of bounds write&quot; flaw in the V8 JavaScript engine and the latter is a &quot;Use after free&quot; bug in the Indexed DB API.\n\nBecause threat actors are currently exploiting the two aforementioned vulnerabilities, Google provides little to no information on how the attacks against these weaknesses are being carried out, or other precautionary measures users should be looking out for. Per Google:\n\n> Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven\u2019t yet fixed.\n\n### V8, the thorn in Chrome&#x27;s side?\n\nNobody will be surprised to see that one of the in-the-wild exploits affects Chrome&#x27;s V8 engine. \n\nAt the heart of every modern web browser sits a JavaScript interpreter, a component that does much of the heavy lifting for interactive web apps. In Chrome, that interpreter is V8. These components need to accommodate frequent updates and adhere to a bewildering array of web standards, while also being both fast and secure.\n\nChrome&#x27;s [V8](<https://v8.dev/>) JavaScript engine has been a significant source of security problems. So significant in fact, that in August Microsoft\u2014whose Edge browser is based on Chrome\u2014announced an experimental project called [Super Duper Secure Mode](<https://blog.malwarebytes.com/reports/2021/08/edges-super-duper-secure-mode-benchmarked-how-much-speed-would-you-trade-for-security/>) that aims to tackle the rash of V8 problems by simply turning an important part of it off.\n\nA little under half of the CVEs issued for V8 relate to its Just-in-Time (JIT) compiler, and more than half of all \u2018in-the-wild\u2019 Chrome exploits abuse JIT bugs. Just-in-time compilation is an important performance feature and turning it off is a direct trade of speed for security. How much? According our quick-and-dirty testing, turning off the JIT compiler makes JavaScript execution twice as slow in Edge.\n\n### 11 zero-days and counting\n\nTo date, the Google Chrome team has patched 11 zero-day vulnerabilities in 2021. Previous patches are from the following vulnerabilities, some of which we have covered here in the Malwarebytes Labs blog:\n\n * [_CVE-2021-21148_](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/02/update-now-chrome-patches-zero-day-that-was-exploited-in-the-wild/>)\n * [_CVE-2021-21166_](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/03/update-now-chrome-fix-patches-in-the-wild-zero-day/>)\n * CVE-2021-21193\n * [_CVE-2021-21206_](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/update-now-chrome-needs-patching-against-two-in-the-wild-exploits/>)\n * [_CVE-2021-21220_](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/update-now-chrome-needs-patching-against-two-in-the-wild-exploits/>)\n * CVE-2021-21224\n * CVE-2021-30551\n * CVE-2021-30554\n * CVE-2021-30563\n\nWith so much bad PR, you might expect Chrome&#x27;s market share to suffer; yet, it remains by far the most popular browser. Users\u2014and the Google Chrome brand\u2014seem unaffected.\n\nMake sure you update your Chrome or Chromium-based browser once you see the patch available, or better still, make sure your browser is set to [update itself](<https://support.google.com/chrome/answer/95414?hl=en-GB&co=GENIE.Platform%3DDesktop#:~:text=Go%20to%20'About%20Google%20Chrome,Chrome%20to%20apply%20the%20update.>).\n\nStay safe!\n\nThe post [Update now! Google Chrome fixes two in-the-wild zero-days](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/09/patch-now-google-chrome-fixes-two-in-the-wild-zero-days/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-09-14T16:28:47", "type": "malwarebytes", "title": "Update now! Google Chrome fixes two in-the-wild zero-days", "bulletinFamily": "blog", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21148", "CVE-2021-21166", "CVE-2021-21193", "CVE-2021-21206", "CVE-2021-21220", "CVE-2021-21224", "CVE-2021-30551", "CVE-2021-30554", "CVE-2021-30563", "CVE-2021-30632", "CVE-2021-30633"], "modified": "2021-09-14T16:28:47", "id": "MALWAREBYTES:390E663F11CA04293C83488A40CB3A8A", "href": "https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/09/patch-now-google-chrome-fixes-two-in-the-wild-zero-days/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "attackerkb": [{"lastseen": "2023-01-24T20:16:01", "description": "Windows Kernel Information Disclosure Vulnerability \nThe type of information that could be disclosed if an attacker successfully exploited this vulnerability is the contents of Kernel memory. An attacker could read the contents of Kernel memory from a user mode process.\n\nThe team at Kaspersky have reported threat actors are exploiting this Microsoft Windows OS kernel vulnerability\n\nSource: <https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/>\n\n \n**Recent assessments:** \n \n**gwillcox-r7** at June 17, 2021 3:23pm UTC reported:\n\nAh good old `NtQuerySystemInformation()` strikes again, never quite going out of style :) In this case CVE-2021-31955 is an information disclosure in good old `ntoskrnl.exe`, aka the Windows kernel itself, that occurs due to a Windows feature supported since Windows Vista known as SuperFetch. By sending a `SystemSuperfetchInformation` class request of type `SuperfetchPrivSourceQuery` via the undocumented `NtQuerySystemInformation()` function, one can obtain the kernel address of the `EPROCESS` structure for the current process. This is REALLY bad since the `EPROCESS` kernel structure contains also contains a pointer to the process\u2019s permissions token. If we know the address of this token, then, provided one has an arbitrary kernel write vulnerability, they can easily overwrite this pointer to point to the permissions token for a higher privilege process, and if this process is running as SYSTEM, they will gain SYSTEM level code execution.\n\nAccording to <https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/>, this was used in the wild alongside CVE-2021-31956 to escape the Chrome sandbox and gain SYSTEM on affected users computers, after first compromising Chrome and gaining execution inside the Chrome sandbox with what is suspected to be CVE-2021-21224.\n\nAssessed Attacker Value: 3 \nAssessed Attacker Value: 3Assessed Attacker Value: 5\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-06-08T00:00:00", "type": "attackerkb", "title": "CVE-2021-31955", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224", "CVE-2021-31955", "CVE-2021-31956"], "modified": "2021-06-08T00:00:00", "id": "AKB:21C170FF-C7C6-4BFB-8AED-613970EDA44C", "href": "https://attackerkb.com/topics/NQpSb1TpCN/cve-2021-31955", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-02-25T11:15:03", "description": "Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.\n\n \n**Recent assessments:** \n \n**gwillcox-r7** at June 17, 2021 3:06pm UTC reported:\n\nAccording to <https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/> this appears to have been used along with CVE-2021-31955 and CVE-2021-31956, a Windows kernel information leak and a Windows LPE vulnerability, to form a full RCE to go from a user browsing a web page to full SYSTEM control over a target Windows device. This is an extremely powerful and valuable exploit chain, and many exploit brokers are willing to pay large sums of money for these chains as they often are very valuable to nation states who wish to use them for their intelligence operations.\n\nOverall though, on its own it seems like this bug wasn\u2019t super valuable as you only get RCE within the sandbox itself, which is why it was then chained with a Windows kernel bug to escape the Chrome sandbox and gain RCE as SYSTEM on the target device. Therefore the risk for this vulnerability alone is lower, however if we keep in mind the other bugs that existed at the time, the overall risk is quite high.\n\nThere also appears to have been public exploit code available for this vulnerability, available at <https://github.com/avboy1337/1195777-chrome0day>, which was potentially reused by the attackers. In any case at the time that code was released the bug was still unpatched which lead researchers at Kaspersky to conclude that its likely attackers used the code from <https://github.com/avboy1337/1195777-chrome0day> in their attack.\n\nOtherwise this is your typical V8 type confusion bug. V8 seems to have had quite a few type confusion bugs in the past so this is nothing too new. If you want to limit exposure, disable JavaScript in your browser on untrusted sites, which will help prevent users from being exploited by these types of attacks as most of them rely on JavaScript to do set up the environment in Chrome appropriately. That being said disabling JavaScript will break most sites so take this with a grain of salt :)\n\nAssessed Attacker Value: 3 \nAssessed Attacker Value: 3Assessed Attacker Value: 5\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-04-26T00:00:00", "type": "attackerkb", "title": "CVE-2021-21224", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224", "CVE-2021-31955", "CVE-2021-31956"], "modified": "2021-04-28T00:00:00", "id": "AKB:160D34D9-2175-4B27-87F8-0CED51121F50", "href": "https://attackerkb.com/topics/fLcfbPxB38/cve-2021-21224", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "securelist": [{"lastseen": "2022-10-10T08:05:03", "description": "\n\nTargeted attack attribution is always a tricky thing, and in general, we believe that attribution is best left to law enforcement agencies. The reason is that, while in 90% of cases it is possible to understand a few things about the attackers, such as their native language or even location, the remaining 10% can lead to embarrassing attribution errors or worse. High-profile actors make every effort to stay undetected inside the victim&#x27;s infrastructure and to leave as few traces as they can. They implement a variety of techniques to make investigation of their campaigns more difficult. Using LOLBINS, common legitimate pentesting tools, and fileless malware; misleading security researchers by placing false flags\u2014these and other anti-forensic tricks often make threat attribution a matter of luck. That is why there is always a percentage of targeted attacks that remain unattributed for years. Recently, I shared [my TOP 10 list of the most mysterious APT](<https://twitter.com/craiu/status/1573272440704319488>) campaigns/tools on Twitter. In this article, I provide a bit more detail on each case.\n\n## 1\\. Project TajMahal\n\nIn late 2018, we discovered a sophisticated espionage framework, which we dubbed &quot;[TajMahal](<https://securelist.com/project-tajmahal/90240/>)&quot;. It consists of two different packages, self-named &quot;Tokyo&quot; and &quot;Yokohama&quot;, and is capable of stealing a variety of data, including data from CDs burnt on the victim&#x27;s machine and documents sent to the printer queue. Each package includes a number of malicious tools: backdoors, keyloggers, downloaders, orchestrators, screen and webcam grabbers, audio recorders, and more. In total, up to 80 malicious modules were discovered.\n\nProject TajMahal had been active for at least five years before we first detected it. What makes it even more mysterious is that its only known victim is a high-profile diplomatic entity. Who was behind the attack, if there were any other victims, or whether the whole toolset was developed to penetrate just one organization\u2014these questions remain unanswered.\n\n## 2\\. DarkUniverse\n\nDarkUniverse is [another APT framework](<https://securelist.com/darkuniverse-the-mysterious-apt-framework-27/94897/>) we discovered and reported on in 2018. It was active in the wild for at least for eight years\u2014from 2009 to 2017\u2014and targeted at least 20 civilian and military entities in Syria, Iran, Afghanistan, Tanzania, Ethiopia, Sudan, Russia, Belarus, and the United Arab Emirates. The malware spreads through spear-phishing emails with a malicious Microsoft Office document as attachment. It consists of several modules responsible for different espionage activities such as keylogging, mail traffic interception, making screenshots, collecting of a wide variety of system information, and more.\n\nThe only prominent case of DarkUniverse being spotted in the wild was when their [sophisticated ItaDuke malware](<https://securelist.com/new-uyghur-and-tibetan-themed-attacks-using-pdf-exploits/35465/>) was dropped with a zero-day PDF exploit conspicuously named &quot;Visaform Turkey.pdf&quot;. DarkUniverse remains unattributed, and it is unclear what happened to the actor after 2017.\n\n## 3\\. PuzzleMaker\n\nIn April 2021, we [detected several targeted attacks](<https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/>) using a complex chain of zero-day exploits. To penetrate the system, the actor used a Google Chrome RCE vulnerability. We were not able to obtain the exploit, but suspected the flaw in question was [CVE-2021-21224](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21224>), which enabled an attacker to execute arbitrary code inside the browser sandbox. Once inside, the actor exploited [CVE-2021-31955](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31955>), an information disclosure vulnerability in the Windows kernel, to obtain the kernel address of the EPROCESS structure, and elevated privileges using one more Windows kernel flaw, [CVE-2021-31956](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31956>).\n\nAfter successful exploitation of these vulnerabilities, custom malware consisting of four modules is delivered to the infected system. The modules are a stager, dropper, service, and remote shell, with the last one being the final payload. We dubbed the APT &quot;PuzzleMaker&quot;.\n\nThe only weak link to known APT campaigns is a post-exploitation technique that is used both by PuzzleMaker and the CHAINSHOT malware, and by at least two state-sponsored threat actors. However, the technique is publicly known and can be used by various groups independently.\n\n## 4\\. ProjectSauron (aka Strider)\n\nProjectSauron was [first discovered](<https://securelist.com/faq-the-projectsauron-apt/75533/>) in September 2015, when [Kaspersky Anti-Targeted Attack Platform](<https://www.kaspersky.com/enterprise-security/anti-targeted-attack-platform>) detected anomalous network traffic in a customer organization. The traffic originated from a suspicious library loaded into the memory of a domain controller server and registered as a Windows password filter, which has access to plain-text passwords to administrative accounts. It proved to be a part of a complex APT platform targeting government, telecommunication, scientific, military, and financial organizations in Russia, Iran, Rwanda, and possibly, Italian-speaking countries.\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2022/10/06125545/TOP-_10_unattributed_APT_mysteries_01.png>)\n\n**_ProjectSauron got its name from the &quot;Sauron&quot; mentioned in its configuration_**\n\nThe ProjectSauron platform has a modular structure. Its core implants are unique to each victim, with different file names and sizes, and timestamps tailored to the target environment. This way, the artifacts discovered in one organization are of low value to other victims. These core implants act as backdoors that download additional modules and run commands inside the memory. The modules perform specific espionage functions, such as keylogging, stealing documents, or hijacking encryption keys from infected computers and attached USB devices. A special module is responsible for accessing air-gapped systems through infected USB drives.\n\nThe threat actor behind ProjectSauron uses a complex command-and-control infrastructure involving a wide range of different ISPs and a number of IP-addresses across US and Europe. The actor made every possible effort not to create recognizable patterns in its operations. The only thing that can be said with confidence is that this level of sophistication is hardly achievable without a nation-state sponsor. It is also worth noting that the actor probably learned from other high-profile APTs, such as [Duqu](<https://securelist.com/the-mystery-of-duqu-part-ten/32668/>), [Flame](<https://securelist.com/the-flame-questions-and-answers/34344/>), [Equation](<https://securelist.com/equation-the-death-star-of-malware-galaxy/68750/>), and [Regin](<https://securelist.com/regin-nation-state-ownage-of-gsm-networks/67741/>).\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2022/10/06125628/TOP-_10_unattributed_APT_mysteries_02.gif>)\n\n## 5\\. USB Thief\n\nIn 2016, our colleagues at ESET [discovered a type of USB malware](<https://www.welivesecurity.com/2016/03/23/new-self-protecting-usb-trojan-able-to-avoid-detection/>) that featured a tricky self-protection mechanism. Dubbed &quot;USB Thief&quot;, it consisted of six files, two of which were configuration files, while the other four were executables. The files were designed to be executed in a pre-defined order, and some of them were AES128-encrypted. The encryption key was generated using a unique USB device ID and certain disk properties. This made it hard to decrypt and run the files anywhere but on the infected USB drive.\n\nThree of the executable files are loaders that load the next-stage file. To ensure that the files are loaded in the correct order, they use hashes of the previously loaded files as their names. Additionally, some of the files check the name of the parent process and terminate if it is wrong. The final payload is a data stealer that looks to the configuration file for information about what data to exfiltrate, how to encrypt it, and where to store. The data is always exfiltrated to a location on the infected USB device.\n\nAnother interesting technique implemented in USB Thief is using portable versions of certain applications, such as Notepad, Firefox, and TrueCrypt, to trick the user into running the first malware loader. To achieve this goal, it injects itself into the command chain of these applications as a plugin or a dynamic linked library. When the user runs the infected app, the malware launches, too. The malware is not widespread and is most likely used in highly targeted attacks involving a human asset.\n\nSince my post on Twitter, [our colleagues at ESET shared further information](<https://twitter.com/0xfmz/status/1573321520570671105>) on this toolset, which includes their suspicion that it might be associated with the Lamberts APT group:\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2022/10/06130040/TOP-_10_unattributed_APT_mysteries_03.png>)\n\n## 6\\. TENSHO (aka White Tur)\n\nIn early 2021, while searching for phishing pages that spoofed governmental websites, researchers at the PwC company [stumbled across a page](<https://www.pwc.com/gx/en/issues/cybersecurity/cyber-threat-intelligence/threat-actor-of-in-tur-est.html>) used to phish for Serbian Ministry of Defense credentials. This page led them to a previously unknown threat actor dubbed &quot;TENSHO&quot; or &quot;White Tur&quot;. This actor has been active since at least 2017 and uses a variety of unique techniques and tools, which include weaponized documents, HTA and PowerShell scripts, Windows executables, and phishing pages that mimic governmental websites.\n\nAmong other tools, TENSHO uses the OpenHardwareMonitor open-source project, whose legitimate purpose is to monitor device temperature, fan speed, and other hardware health data. The threat actor spreads a malicious OpenHardwareMonitor package designed to deliver TENSHO&#x27;s malware in the form of a PowerShell script or Windows binary.\n\nTo date, no ties have been discovered between this threat actor and any known APT group. TENSHO targets organizations inside Serbia and Republika Srpska (an entity in Bosnia and Herzegovina) indicating a very specific regional interest. Because many parties might be interested in targeting these regions, it is not easy to attribute the threat.\n\n## 7\\. PlexingEagle\n\nDuring the HITBSec 2017 conference in Amsterdam, Emmanuel Gadaix presented the discovery of a highly interesting GSM cyberespionage toolset, likely deployed by a very advanced threat actor, found during a routine security sweep in a client&#x27;s systems.\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2022/10/06130131/TOP-_10_unattributed_APT_mysteries_04.png>)\n\n**_[A Surprise Encounter With a Telco APT](<https://conference.hitb.org/hitbsecconf2017ams/materials/D2T4%20-%20Emmanuel%20Gadaix%20-%20A%20Surprise%20Encounter%20With%20a%20Telco%20APT.pdf>), by courtesy of Emmanuel Gadaix_**\n\nThe compromise was originally discovered by Gadaix&#x27; team on a Solaris 10 machine that was used by the actors as an operating base. From there, the attackers leveraged advanced knowledge of the GSM infrastructure and network to patch the functionality normally used by law enforcement for eavesdropping on phone calls in order to implement their own mechanisms for intercepting calls of interest. The malware used in the intrusion was written using LUA, a language we saw used by other advanced threat actors, such as the ones behind Flame and Project Sauron. In his presentation, Gadaix hints at a number of similarities between this case and the so-called &quot;Athens Affair&quot;, the two being the only known cases of this threat actor actually being caught in the wild.\n\n## 8\\. SinSono\n\nIn May 2021, Syniverse, a telecom company that provides text message routing services to such carriers as At&amp;T, Verizon, T-Mobile, and others, detected [unauthorized access to its IT systems](<https://www.theverge.com/2021/10/6/22713543/syniverse-hack-five-years-text-messages>). An internal investigation revealed that an unknown adversary first penetrated Syniverse&#x27;s infrastructure in 2016. For five years they had acted undetected, accessed internal databases, and managed to compromise about 235 customers&#x27; login credentials for the company&#x27;s Electronic Data Transfer (EDT) environment. Through these accounts, the threat actor could access highly sensitive consumer data, e.g., call records and the contents of text messages.\n\nWhile the company reset or inactivated credentials for all EDT customers, and contacted affected organizations, many questions remain: for instance, if the actor had actually stolen sensitive data or not. Although the company itself and some of the carriers relying on its services see no indicators of a major breach and no attempt to disrupt their processes, we know neither who the actor was nor what their goals were. Our analysis of the data related to the attack indicates a high degree of attention and care regarding operational security and ensuring that attribution is difficult.\n\n## 9\\. MagicScroll (aka AcidBox)\n\nMagicScroll is a sophisticated malicious framework that was [first detected](<https://unit42.paloaltonetworks.com/acidbox-rare-malware/>) by Palo Alto&#x27;s Unit 42 in 2019. It is a type of multistage malware with only a few known samples and one known victim, located in Russia and attacked in 2017. The initial infection stage of MagicScroll is missing. The first known stage is a loader that was created as a [security support provider](<https://learn.microsoft.com/en-us/windows/win32/secauthn/custom-security-packages>), a DLL that usually provides certain security features, such as application authentication. MagicScroll abuses this functionality to achieve injection into the lsass.exe process and probably persistence as well.\n\nThe loader&#x27;s main purpose is to decrypt and load the next-stage module, which is stored in the registry. This module exploits a VirtualBox driver vulnerability to load an unsigned malicious driver in kernel mode. According to Unit 42, the exploitation of this vulnerability was previously observed in [Turla](<https://securelist.com/tag/turla/>) operations, however there is no indication that the new actor has any links to that group. Unit 42 also found some loose similarities with [ProjectSauron](<https://securelist.com/faq-the-projectsauron-apt/75533/>), but they stated that these are too weak for considering the two campaigns linked. Neither have we found any ties between MagicScroll and any other known APTs.\n\n## 10\\. Metador\n\nThe Metador threat actor was [first publicly described](<https://www.sentinelone.com/labs/the-mystery-of-metador-an-unattributed-threat-hiding-in-telcos-isps-and-universities/>) by SentinelLabs in September 2022. It mainly targets ISPs, telecommunication companies, and universities in several countries in the Middle East and Africa; at least one of its victims has been attacked by nearly ten different APT groups.\n\nMetador operates two malware platforms dubbed &quot;metaMain&quot; and &quot;Mafalda&quot;, which are deployed purely in memory. The metaMain platform is a feature-rich backdoor, which provides the threat actor with long-term access to the infected system. It can log keyboard and mouse events, make screenshots, download and upload files, and execute arbitrary shellcode.\n\nMafalda is a backdoor that is being actively developed. Its latest version was compiled with a timestamp of December 2021. It features a number of anti-analysis techniques and supports 67 commands, which is 13 more than in the previous version of the malware.\n\nApart from typical backdoor functionality, metaMain and Mafalda are capable of establishing connections to other (yet unknown) implants and exchange data with these. One of those implants is called &quot;Cryshell&quot; and acts as intermediate server between metaMain or Mafalda, and the C2. There are reasons to believe that unknown Linux implants exist that can send data collected from Linux machines to Mafalda.\n\nIt is yet to be established who the actor behind Metador is and what their goals are. The sophisticated malware designed to stay undetected for a long time suggests that this is a cyberespionage campaign by a high-end threat actor. At least some of the C2 responses are in Spanish, which may indicate that the actor or some of its developers speak Spanish. Also, some cultural references were found in Metador&#x27;s malware, including British pop punk lyrics and Argentinian political cartoons. The diversity of traces makes it difficult to determine in which state&#x27;s interests it operates\u2014if at all. One of the hypotheses is that the group is a high-end contractor.\n\n## Conclusion\n\nAdvanced threat actors use every possible means to stay undetected, and\u2014if caught\u2014unattributed. Every now and then, security researchers will reveal a mysterious campaign that has remained uncovered for years and that is nearly impossible to trace back to its benefactors with certitude. The ten stories described in this post are just some of the many unattributed mysteries we have seen through the years. That is why it is important to discuss them and share data on them within the cybersecurity community.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2022-10-07T10:00:47", "type": "securelist", "title": "TOP 10 unattributed APT mysteries", "bulletinFamily": "blog", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21224", "CVE-2021-31955", "CVE-2021-31956"], "modified": "2022-10-07T10:00:47", "id": "SECURELIST:8BBBF7B71E6D52B912070367475B6567", "href": "https://securelist.com/top-10-unattributed-apt-mysteries/107676/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-06-15T08:32:02", "description": "\n\nOn April 14-15, 2021, Kaspersky technologies detected a wave of highly targeted attacks against multiple companies. Closer analysis revealed that all these attacks exploited a chain of Google Chrome and Microsoft Windows zero-day exploits. While we were not able to retrieve the exploit used for remote code execution (RCE) in the Chrome web browser, we were able to find and analyze an elevation of privilege (EoP) exploit that was used to escape the sandbox and obtain system privileges.\n\nThe elevation of privilege exploit was fine-tuned to work against the latest and most prominent builds of Windows 10 (17763 - RS5, 18362 - 19H1, 18363 - 19H2, 19041 - 20H1, 19042 - 20H2) and it exploits two distinct vulnerabilities in the Microsoft Windows OS kernel. On April 20, 2021, we reported these vulnerabilities to Microsoft and they assigned CVE-2021-31955 to the information disclosure vulnerability and CVE-2021-31956 to the elevation of privilege vulnerability. Both vulnerabilities were patched on June 8, 2021, as a part of the June Patch Tuesday.\n\n## Remote code execution exploit\n\nAll of the observed attacks were conducted through Chrome browser. Unfortunately, we were unable to retrieve the JavaScript with full exploit code, but the timeframe of attacks and events preceding it led us to suspect one particular vulnerability.\n\nOn April 6-8, 2021 the Pwn2Own competition took place. This is a computer hacking contest where the Google Chrome web browser was one of the targets. According to the ZDI (Zero Day Initiative, the organizer of Pwn2Own) [website](<https://www.zerodayinitiative.com/blog/2021/4/2/pwn2own-2021-schedule-and-live-results>), one participating team was able to demonstrate a successful exploitation of the Chrome renderer process using a Typer Mismatch bug.\n\nOn April 12, 2021, the developers of Chromium committed two (issue [1196683](<https://chromium-review.googlesource.com/c/v8/v8/+/2820971>), issue [1195777](<https://chromium-review.googlesource.com/c/v8/v8/+/2817791>)) Typer-related bug fixes to the open-source repository of V8 \u2013 a JavaScript engine used by Chrome and Chromium web browsers. One of these bug fixes (issue [1196683](<https://chromium-review.googlesource.com/c/v8/v8/+/2820971>)) was intended to patch a vulnerability that was used during Pwn2Own, and both bug fixes were committed together with regression tests \u2013 JavaScript files to trigger these vulnerabilities. Later on the same day, a user with the Twitter handle @r4j0x00 published a working remote code execution exploit on GitHub, targeting an up-to-date version of Google Chrome. That exploit used a vulnerability from issue [1196683](<https://chromium-review.googlesource.com/c/v8/v8/+/2820971>) to execute a shellcode in the context of the browser renderer process.\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2021/06/07122836/PuzzleMaker_attacks_01.png>)\n\n**_Screenshot of tweet with Chrome zero-day published on April 12, 2021_**\n\nThe published exploit didn&#x27;t contain a sandbox escape exploit and was therefore intended to work only when the browser was launched with the command line option _-no-sandbox_.\n\nOn April 13, 2021, Google released Chrome update 89.0.4389.128 for Windows, Mac and Linux with a fix for two vulnerabilities; CVE-2021-21220 (used during Pwn2Own) was one of them.\n\nSome of our customers who were attacked on April 14-15, 2021, already had their Chrome browser updated to 89.0.4389.128, and that&#x27;s why we think the attackers didn&#x27;t use CVE-2021-21220 in their attacks.\n\nOn April 14, 2021, Google released Chrome update 90.0.4430.72 for Windows, Mac and Linux with a fix for 37 vulnerabilities. On the same day, a new Chrome exploit was presented to the public.\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2021/06/07122912/PuzzleMaker_attacks_02.png>)\n\n**_Screenshot of GitHub repository with Chrome zero-day published on April 14, 2021_**\n\nThis newly published exploit used a vulnerability from issue [1195777](<https://chromium-review.googlesource.com/c/v8/v8/+/2817791>), worked on the newly released Chrome 90.0.4430.72, and was fixed as CVE-2021-21224 only a few days later, on April 20, 2021.\n\nWe suspect the attackers were also able to use this JavaScript file with regression test to develop the exploit (or acquire it from someone else) and were probably using CVE-2021-21224 in their attacks.\n\n## Elevation of privilege exploit\n\nCVE-2021-31955 is an information disclosure vulnerability in ntoskrnl.exe. The vulnerability is affiliated with a Windows OS feature called SuperFetch. It was introduced in Windows Vista and is aimed to reduce software loading times by pre-loading commonly used applications into memory. For SuperFetch purposes the function _NtQuerySystemInformation_ implements a special system information class _SystemSuperfetchInformation_. This system information class incorporates more than a dozen of different SuperFetch information classes. The vulnerability lies in the fact that data returned by the _NtQuerySystemInformation_ function for the SuperFetch information class _SuperfetchPrivSourceQuery_ contains EPROCESS kernel addresses for currently executed processes.\n\nIt&#x27;s noteworthy that this vulnerability can be observed in code that was available on [GitHub](<https://github.com/zodiacon/WindowsInternals/blob/master/MemInfo/MemInfo.cpp>) for a few years before we caught it in the wild and Microsoft patched it.\n\n[](<https://media.kasperskycontenthub.com/wp-content/uploads/sites/43/2021/06/07122949/PuzzleMaker_attacks_03.png>)\n\n**_CVE-2021-31955 can be observed in the source code of the MemInfo utility_**\n\nThe other vulnerability, CVE-2021-31956, is a heap-based buffer overflow in ntfs.sys. The function _NtfsQueryEaUserEaList_ processes a list of extended attributes for the file and stores the retrieved values to buffer. This function is accessible via _ntoskrnl_ syscall and among other things it&#x27;s possible to control the size of the output buffer. If the size of the extended attribute is not aligned, the function will calculate a padding and the next extended attribute will be stored 32-bit aligned. The code checks if the output buffer is long enough to fit the extended attribute with padding, but it doesn&#x27;t check for possible integer-underflow. As a result, a heap-based buffer overflow can happen.\n \n \n for ( cur_ea_list_entry = ea_list; ; cur_ea_list_entry = next_ea_list_entry )\n {\n ...\n \n out_buf_pos = (DWORD *)(out_buf + padding + occupied_length);\n \n if ( NtfsLocateEaByName(eas_blocks_for_file, eas_blocks_size, &name, &ea_block_pos) )\n {\n \tea_block = eas_blocks_for_file + ea_block_pos;\n \tea_block_size = ea_block->DataLength + ea_block->NameLength + 9;\n \tif ( ea_block_size <= out_buf_length - padding ) // integer-underflow is possible\n \t{\n \tmemmove(out_buf_pos, (const void *)ea_block, ea_block_size); // heap buffer overflow\n \t*out_buf_pos = 0;\n \t}\n }\n else\n {\n \t...\n }\n \n ...\n \n occupied_length += ea_block_size + padding;\n out_buf_length -= ea_block_size + padding;\n padding = ((ea_block_size + 3) & 0xFFFFFFFC) - ea_block_size;\n \n ...\n }\n\n**_Pseudo-code for vulnerable code in function NtfsQueryEaUserEaList_**\n\nThe exploit uses CVE-2021-31956 along with Windows Notification Facility (WNF) to create arbitrary memory read and write primitives. We are planning to publish more information about this technique in the future.\n\nAs the exploit uses CVE-2021-31955 to get the kernel address of the EPROCESS structure, it is able to use the common post exploitation technique to steal SYSTEM token. However, the exploit uses a rarely used &quot;PreviousMode&quot; technique instead. We have seen this technique used by the CHAINSHOT framework and even made a [presentation](<https://github.com/oct0xor/presentations/blob/master/2019-02-Overview%20of%20the%20latest%20Windows%20OS%20kernel%20exploits%20found%20in%20the%20wild.pdf>) about it at CanSecWest/BlueHat in 2019. The exploit uses this technique to inject a malware module into the system process and execute it.\n\n## Malware modules\n\nBesides the aforementioned exploits, the full attack chain consists of four additional malware modules, which will be referred to as:\n\n * Stager\n * Dropper\n * Service\n * Remote shell\n\nThe stager module is used to notify that exploitation was successful. It also downloads and executes a more complex malware dropper module from a remote server. Each stager module is delivered to the victim with a personalized configuration blob that defines the C&amp;C URL, Session ID, keys to decrypt the next stage of malware, and other information.\n\nAll the stager module samples that we&#x27;ve discovered so far were configured to use the same URL address \u2013 hxxps://p{removed}/metrika_upload/index.php \u2013 to download the encrypted malware dropper module.\n\nWe believe there is a chance that the remote code execution JavaScript exploit was also hosted on the same legitimate-looking geopolitical news portal, but we found no evidence of a classic watering hole attack. The victimology suggests a highly targeted delivery of exploits.\n\nThe dropper module is used to install two executables that pretend to be legitimate files belonging to Microsoft Windows OS. One of these files (%SYSTEM%\\WmiPrvMon.exe) is registered as a service and is used as a launcher for the second executable. This second executable (%SYSTEM%\\wmimon.dll) has the functionality of a remote shell and can be considered the main payload of the attack. We couldn&#x27;t find any similarities between this and other known malware.\n\nThe remote shell module has a hardcoded URL of the C&amp;C server inside (media-seoengine[.]com). All the communication between C&amp;C server and client is authorized and encrypted. The remote shell module is able to download and upload files, create processes, sleep for specified amounts of time and delete itself from the compromised machine.\n\nNone of the artifacts we analyzed appear to have strong connections to any known threat actors. The only similarity to CHAINSHOT we observed is the &quot;PreviousMode&quot; technique, although this is publicly known and may be used by various groups. We are calling the threat actor behind these attacks PuzzleMaker.\n\nKaspersky products detect this exploit and malware modules with the verdicts:\n\n * PDM:Exploit.Win32.Generic\n * PDM:Trojan.Win32.Generic\n * UDS:DangerousObject.Multi.Generic\n\nKaspersky products detected these attacks with the help of the Behavioral Detection Engine and the Exploit Prevention component. Over the past few years, we have built a multitude of exploit protection technologies into our products that have detected many zero-days, repeatedly proving their effectiveness. We will continue to improve defenses for our users by enhancing technologies and working with third-party vendors to patch vulnerabilities, making the internet more secure for everyone.\n\nMore information about these attacks and the actor behind them is available to customers of the Kaspersky Intelligence Reporting service. Contact: intelreports@kaspersky.com.\n\nKaspersky would like to thank Microsoft for their prompt analysis of the report and patches.\n\n## IoCs\n\nmedia-seoengine[.]com\n\n**%SYSTEM%\\WmiPrvMon.exe**\n\nMD5 [09A5055DB44FC1C9E3ADD608EFFF038C](<https://opentip.kaspersky.com/09A5055DB44FC1C9E3ADD608EFFF038C/>) \nSHA-1 [BFFA4462901B74DBFBFFAA3A3DB27DAA61211412](<https://opentip.kaspersky.com/BFFA4462901B74DBFBFFAA3A3DB27DAA61211412/>) \nSHA-256 [982F7C4700C75B81833D5D59AD29147C392B20C760FE36B200B541A0F841C8A9](<https://opentip.kaspersky.com/982F7C4700C75B81833D5D59AD29147C392B20C760FE36B200B541A0F841C8A9/>)\n\n**%SYSTEM%\\wmimon.dll**\n\nMD5 [D6B850C950379D5EE0F254F7164833E8](<https://opentip.kaspersky.com/D6B850C950379D5EE0F254F7164833E8/>) \nSHA-1 [E63ED3B56A5F9A1EA5C92D3D2444196EA13BE94B](<https://opentip.kaspersky.com/E63ED3B56A5F9A1EA5C92D3D2444196EA13BE94B/>) \nSHA-256 [8A17279BA26C8FBE6966EA3300FDEFB1ADAE1B3ED68F76A7FC81413BD8C1A5F6](<https://opentip.kaspersky.com/8A17279BA26C8FBE6966EA3300FDEFB1ADAE1B3ED68F76A7FC81413BD8C1A5F6/>)", "cvss3": {}, "published": "2021-06-08T17:32:30", "type": "securelist", "title": "PuzzleMaker attacks with Chrome zero-day exploit chain", "bulletinFamily": "blog", "cvss2": {}, "cvelist": ["CVE-2021-21220", "CVE-2021-21224", "CVE-2021-31955", "CVE-2021-31956"], "modified": "2021-06-08T17:32:30", "id": "SECURELIST:8E9198BF0E389572981DD1AA05D0708A", "href": "https://securelist.com/puzzlemaker-chrome-zero-day-exploit-chain/102771/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "github": [{"lastseen": "2022-07-06T17:28:30", "description": "In this post I&#x27;ll exploit CVE-2022-1134, a type confusion in V8, the JavaScript engine of Chrome that I reported in March 2022, as [bug 1308360](<https://bugs.chromium.org/p/chromium/issues/detail?id=1308360>) and was fixed in version [100.0.4896.60](<https://chromereleases.googleblog.com/2022/03/stable-channel-update-for-desktop_29.html>). This bug allows remote code execution (RCE) in the renderer sandbox of Chrome by a single visit to a malicious site. The bug exists in the super inline cache (SuperIC) feature, which has a history of exploitable vulnerabilities. In what follows, I&#x27;ll go through some implementation details of the inline cache, as well as interactions between V8 and Blink (the Chrome renderer), to fill in the background required to understand and exploit this bug.\n\n## Inline cache in V8[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#inline-cache-in-v8>)\n\nInline cache is an optimization used in V8 for speeding up property accesses in bytecode generated by [Ignition](<https://v8.dev/docs/ignition>) (the interpreter in V8). Roughly speaking, when a JavaScript function is run, Ignition will compile the function into bytecode, which then collects profiling data and feedback every time the function is run. The feedback is then used by the JIT compiler to generate optimized machine code at a later stage. As the V8 optimization pipeline is very well documented, I&#x27;ll not repeat the details here, but refer readers to [this article](<https://v8.dev/docs/ignition>) and the references within. Readers may also wish to consult [&quot;JavaScript engine fundamentals: Shapes and Inline Caches&quot;](<https://mathiasbynens.be/notes/shapes-ics>) by Mathias Bynens to get a high-level understanding of object types and inline cache in V8.\n\nTo distinguish between object types and optimize property accesses, each JavaScript object in V8 stores a `map` as its first property:\n \n \n DebugPrint: 0x282908049499: [JS_OBJECT_TYPE]\n - map: 0x282908207939 <Map(HOLEY_ELEMENTS)> [FastProperties]\n ...\n 0x282908207939: [Map]\n - type: JS_OBJECT_TYPE\n - instance size: 16\n - inobject properties: 1\n - elements kind: HOLEY_ELEMENTS\n - unused property fields: 0\n - enum length: 1\n ...\n \n\nThe `map` of an object stores important information, such as the `type` of the object, and the offsets of each of its properties. The memory layout of objects with the same map are the same, meaning that their properties are at the same offsets. This allows property accesses to be optimized once the `map` of an object is known. In overly simplified terms, when the bytecode for a property access is run, the maps of the input objects are recorded, and an optimized handler is created for each `map`. When the function is run in the future, if an object of a known `map` is passed, the optimized handler corresponding to this `map` is used to access the property of the object.\n\n### Bytecode handling in V8[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#bytecode-handling-in-v8>)\n\nTo get a better understanding of what actually happens, I&#x27;ll now go through a concrete example to show the general process of inline caching. Take the following function as an example:\n \n \n function f(a) {\n return a.x\n }\n \n\nI can run it in V8 and use the `print-bytecode` flag to print out the generated bytecode\n \n \n [generated bytecode for function: f (0x11e7001d36cd <SharedFunctionInfo f>)]\n ...\n Bytecode Age: 0\n 0x11e7001d3886 @ 0 : 2d 03 00 00 GetNamedProperty a0, [0], [0]\n 0x11e7001d388a @ 4 : a9 Return \n \n\nWe see that `GetNamedProperty` is the bytecode generated for the property access `a.x`. In V8, property accesses are divided into `NamedProperty` and `KeyedProperty`, where `NamedProperty` refers to the usual properties that are accessed as a property, for example, `a.x`, while `KeyedProperty` refers to element-like properties that are indexed numerically, for example, `a[1]`. Therefore, for example, the following function\n \n \n function f(a) {\n return a[1]\n }\n \n\ngenerates the `GetKeyedProperty` bytecode instead:\n \n \n [generated bytecode for function: f (0x1e8d001d36cd <SharedFunctionInfo f>)]\n ...\n Bytecode Age: 0\n 0x1e8d001d386a @ 0 : 0d 01 LdaSmi [1]\n 0x1e8d001d386c @ 2 : 2f 03 00 GetKeyedProperty a0, [0]\n 0x1e8d001d386f @ 5 : a9 Return \n \n\nThe bytecodes generated are handled by various `[IGNITION_HANDLER](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/interpreter/interpreter-generator.cc;l=41>)`. For example, the `GetNamedProperty` bytecode is handled by [the following handler](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/interpreter/interpreter-generator.cc;l=522>).\n \n \n IGNITION_HANDLER(GetNamedProperty, InterpreterAssembler) {\n ...\n accessor_asm.LoadIC_BytecodeHandler(&params, &exit_point);\n \n BIND(&done);\n {\n SetAccumulator(var_result.value());\n Dispatch();\n }\n }\n \n\nThe handler delegates the task to `[LoadIC_BytecodeHandler](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/ic/accessor-assembler.cc;drc=242da5037807dde3daf097ba74f875db83b8b613;l=2992>)`. This function inspects the feedback collected by this particular bytecode (that is, the input passed to this bytecode operation so far) and determines how the property should be accessed. When the function is first run, there isn&#x27;t any feedback, so the property access simply falls back to the slow runtime implementation. At the same time, feedback is collected, and optimized property access handlers are cached for the object `map` that was seen.\n \n \n void AccessorAssembler::LoadIC_BytecodeHandler(const LazyLoadICParameters* p,\n ExitPoint* exit_point) {\n ...\n GotoIf(IsUndefined(p->vector()), &no_feedback);\n \n ...\n BIND(&no_feedback); //<---------- no feedback, falls back to runtime implementation\n {\n Comment(\"LoadIC_BytecodeHandler_nofeedback\");\n // Call into the stub that implements the non-inlined parts of LoadIC.\n exit_point->ReturnCallStub(\n Builtins::CallableFor(isolate(), Builtin::kLoadIC_NoFeedback),\n p->context(), p->receiver(), p->name(),\n SmiConstant(FeedbackSlotKind::kLoadProperty));\n }\n ...\n }\n \n\nAfter feedback is collected, the bytecode handler will try to look for a cached optimized property handler that is suitable for accessing the property of the current input:\n \n \n void AccessorAssembler::LoadIC_BytecodeHandler(const LazyLoadICParameters* p,\n ExitPoint* exit_point) {\n ...\n // Inlined fast path.\n {\n Comment(\"LoadIC_BytecodeHandler_fast\");\n \n TVARIABLE(MaybeObject, var_handler);\n Label try_polymorphic(this), if_handler(this, &var_handler);\n \n TNode<MaybeObject> feedback = TryMonomorphicCase( //<-------- Look for cached handler\n p->slot(), CAST(p->vector()), lookup_start_object_map, &if_handler,\n &var_handler, &try_polymorphic);\n \n BIND(&if_handler); //<--------- handler found\n HandleLoadICHandlerCase(p, CAST(var_handler.value()), &miss, exit_point); //<------- try to use optimized handler\n ...\n }\n }\n \n\nIf a handler is found, then it&#x27;s used to optimize the property access. If the handler is not found, or for some reason, the object fails certain checks, then a cache miss happens, and the function falls back to the slow path (bailout).\n\n### **Caching and using property access handler**[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#caching-and-using-property-access-handler>)\n\nWhen a cache miss happens, for example, because there is not enough feedback or because the object has a previously unknown `map`, various `*IC_Miss` runtime functions can be called to handle the case. In the case of a load, the `[LoadIC_Miss](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/ic.cc;l=2688;drc=242da5037807dde3daf097ba74f875db83b8b613>)` function is called:\n \n \n RUNTIME_FUNCTION(Runtime_LoadIC_Miss) {\n ...\n FeedbackSlotKind kind = vector->GetKind(vector_slot);\n if (IsLoadICKind(kind)) {\n LoadIC ic(isolate, vector, vector_slot, kind);\n ...\n RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key));\n \n } ...\n \n\nIn this case, a `[LoadIC](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/ic.h;drc=49ce0f669d3e54b41b29cd8ad6213e28cf8fa8bc;l=181>)` object is created, and its `[Load](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/ic.cc;l=415>)` method is called. The `LoadIC::Load` method does not just bail out at runtime to perform the actual property load, but it also creates and caches a new optimized handler for when this case is next encountered. Apart from the `map` of the object, various properties of the object are used to create the handler.\n \n \n MaybeHandle<Object> LoadIC::Load(Handle<Object> object, Handle<Name> name,\n bool update_feedback,\n Handle<Object> receiver) {\n ...\n PropertyKey key(isolate(), name);\n LookupIterator it = LookupIterator(isolate(), receiver, key, object);\n ...\n if (it.IsFound() || !ShouldThrowReferenceError()) {\n // Update inline cache and stub cache.\n if (use_ic) {\n UpdateCaches(&it); //<--------- update inline cache\n } ...\n }...\n \n\n`UpdateCaches` then calls `[ComputeHandler](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/ic.cc;l=932>)` to create a new handler and update the inline cache when appropriate.\n \n \n Handle<Object> LoadIC::ComputeHandler(LookupIterator* lookup) {\n ...\n case LookupIterator::ACCESSOR: {\n Handle<JSObject> holder = lookup->GetHolder<JSObject>();\n ...\n FieldIndex field_index;\n if (Accessors::IsJSObjectFieldAccessor(isolate(), map, lookup->name(),\n &field_index)) {\n TRACE_HANDLER_STATS(isolate(), LoadIC_LoadFieldDH);\n return LoadHandler::LoadField(isolate(), field_index); //<-- Creates new handler\n }\n ...\n }\n ...\n }\n \n\n`ComputeHandler` uses the type of the property accessor (for example, simple data property, property defined by getter and setter, etc.), which is determined by the object `map` (and property name, which is fixed for the `GetNamedProperty` operation), to determine how to create the handler, and there may be further subcases within each case. For example, in the above, if the property is defined via a getter and setter pair (`ACCESSOR` case), and accesses the `length` property of either `Array` or `String` (which is what `[IsJSObjectFieldAccessor](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/builtins/accessors.cc;drc=cfcdde121f7532b2fa28a2997722374169b7d46f;l=67>)` is checking), then `LoadHandler::LoadField` will return a handler of the kind `kField`, with the `field_index`, which is the offset of the field, encoded in the handler.\n\nWhen the JavaScript function is run again, the `[AccessorAssembler::LoadIC](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/accessor-assembler.cc;l=3068>)` function is called when the bytecode `GetNameProperty` is handled by `[LoadIC_BytecodeHandler](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/ic/accessor-assembler.cc;drc=242da5037807dde3daf097ba74f875db83b8b613;l=2992>)`. This first looks for a cached handler using `[TryMonomorphicCase](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/accessor-assembler.cc;l=3086>)`. In this simple case, if the variable is of type `Array` or `String`, the handler created from before is found and applied using `[HandleLoadICSmiHandlerLoadNamedCase](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/accessor-assembler.cc;l=633>)`:\n \n \n void AccessorAssembler::HandleLoadICSmiHandlerLoadNamedCase(\n const LazyLoadICParameters* p, TNode<Object> holder,\n TNode<IntPtrT> handler_kind, TNode<WordT> handler_word, Label* rebox_double,\n TVariable<Float64T>* var_double_value, TNode<Object> handler, Label* miss,\n ExitPoint* exit_point, ICMode ic_mode, OnNonExistent on_nonexistent,\n ElementSupport support_elements) {\n ...\n \n GotoIf(WordEqual(handler_kind, LOAD_KIND(kField)), &field);\n ...\n BIND(&field);\n {\n ...\n HandleLoadField(CAST(holder), handler_word, var_double_value, rebox_double,\n miss, exit_point); //<----- loads the field from an offset encoded in `handler_word`\n ...\n } \n ...\n }\n \n\nIn this case, the handler (`handler_word`) is of the kind `kField` with the field offset encoded in it. The `HandleLoadField` then loads the field from the field offset directly, removing the need to load and call the getter.\n\nWhile the inline cache optimizes property accesses, care must be taken to ensure that the assumptions made when the handler is created remain valid when the handler is used in the case of a cache match.\n\n## JavaScript inheritance 101[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#javascript-inheritance-101>)\n\nThe vulnerability is in the handling of `super` property accesses in the inline cache. In this section, I&#x27;ll briefly explain the concept of the `super` property in JavaScript.\n\nReaders who are familiar with other object oriented languages, such as Java and C++, may be surprised by how the `super` property works in JavaScript. Instead of accessing properties in the parent class, like in Java and C++:\n \n \n class A {\n int foo = 1;\n }\n \n class B extends A {\n public B() {\n super();\n super.foo; //<---- 1\n }\n }\n \n\nThe same code in JavaScript results in `super.foo` being undefined:\n \n \n class A {\n foo = 1;\n }\n \n class B extends A {\n constructor() {\n super();\n super.foo; //<------ undefined\n }\n }\n \n\nFor data properties, `super.foo` behaves similarly to `this.foo` and returns `undefined` unless the field is also defined explicitly on the object that calls `super.foo` (Readers who are in for a headache, can follow the discussions [here](<https://github.com/tc39/proposal-class-fields/issues/266>)). For property accessors (that is, properties, defined via getter and setter), however, the behavior is more consistent with other languages, in that the accessor defined in the parent class is called, with the `this` object being the calling object (receiver):\n \n \n class A {\n get prop() {\n return this.a;\n }\n }\n \n class B extends A {\n constructor() {\n super();\n this.a = 'B';\n }\n m() {\n return super.prop;\n }\n }\n \n var b = new B();\n b.m(); //<------ 'B'\n \n\nAs JavaScript classes are really defined via prototypes, all of the above can equally be done via prototype:\n \n \n class B {\n m() {\n return super.prop;\n }\n }\n \n B.prototype.__proto__ = {get prop() {return this.x}};\n \n var b = new B();\n b.x = 1;\n b.m() //<-------- 1\n \n\nIn `B.prototype.__proto__` above, `B` is treated as the constructor of the class `B`. The field `prototype` of a function, when treated as a constructor, is the prototype of the object that this constructor is going to create:\n \n \n %DebugPrint(B.prototype);\n DebugPrint: 0x1c120004af39: [JS_OBJECT_TYPE]\n - map: 0x1c1200207d29 <Map(HOLEY_ELEMENTS)> [FastProperties]\n - prototype: 0x1c12001c4281 <Object map = 0x1c12002021e9>\n - elements: 0x1c1200002261 <FixedArray[0]> [HOLEY_ELEMENTS]\n - properties: 0x1c120004afb9 <PropertyArray[2]>\n - All own properties (excluding elements): {\n 0x1c1200004619: [String] in ReadOnlySpace: #constructor: 0x1c120004aefd <JSFunction B (sfi = 0x1c12001d374d)> (const data field 0), location: properties[0]\n 0x1c12001d3669: [String] in OldSpace: #m: 0x1c120004af1d <JSFunction m (sfi = 0x1c12001d3781)> (const data field 1), location: properties[1]\n }\n \n\nThis shows that the prototype of the object created by using `B` as a constructor has the `constructor` field as the function `B` and a method `m`, which is an object defined by class `B`. This prototype is, of course, just a JavaScript object, which means it can also have a prototype of its own. This is specified by the `__proto__` field. This prototype type (`B.prototype.__proto__`) now specifies a class inheritance. An object created by calling the constructor `B` now inherits the _data properties_ and methods in `B.prototype.__proto__`. This is similar to saying that `B.prototype.__proto__` is the template of an object in the parent class of `B`. This can be seen via the class inheritance syntax:\n \n \n class A {\n get prop() {\n return this.a;\n }\n }\n \n class B extends A {\n }\n \n %DebugPrint(B.prototype.__proto__)\n \n\nThe above gives this output in V8:\n \n \n DebugPrint: 0x24750004adf1: [JS_OBJECT_TYPE]\n ...\n - All own properties (excluding elements): {\n prop: 0x2475001d3a85 <AccessorPair> (accessor, dict_index: 2, attrs: [W_C])\n constructor: 0x24750004adb5 <JSFunction A (sfi = 0x2475001d3745)> (data, dict_index: 1, attrs: [W_C])\n }\n \n\nThis shows that `B.prototype.__proto__` is an object created by the constructor of class `A`. The main difference between using the class syntax and the prototype syntax is that, with the prototype syntax, a concrete object can now be supplied as the parent class object template, which means that it is possible to access data properties of the `B.prototype.__proto__` object as `super` properties:\n \n \n class B {\n m() {\n return super.prop;\n }\n }\n \n B.prototype.__proto__ = {prop : 1};\n \n var b = new B();\n b.m() //<-------- 1\n \n\nNot only that, it is even possible to have an object and its parent class object have different JavaScript types:\n \n \n class B {\n m() {\n return super.length;\n }\n }\n \n var b = new B();\n B.prototype.__proto__ = new Int8Array(1);\n b.m(); //<---- throw TypeError\n \n\nThe above code throws a `TypeError` when the accessor to `length` from `TypedArray` (`Int8Array`) is called on the object `B`, which is of `JS_OBJECT_TYPE`, instead of `JS_TYPED_ARRAY_TYPE`, so a `TypeError` is thrown when the accessor is applied to the object `b`, which is of the wrong type. In this case, it is important that the type check is performed, as the `length` accessor of `TypedArray` assumes the object has the layout of a `TypedArray` and would cause type confusion if it operates on an object of different type (for example, `JS_OBJECT`). This point is important to our vulnerability.\n\n## The SuperIC trilogy[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#the-superic-trilogy>)\n\nThe super inline cache (SuperIC) is the inline cache used for [super property](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/super>) accesses. The relevant bytecode is `GetNamedPropertyFromSuper` that is handled as [follows](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/interpreter/interpreter-generator.cc;l=558>):\n \n \n IGNITION_HANDLER(GetNamedPropertyFromSuper, InterpreterAssembler) {\n ...\n TNode<Object> result =\n CallBuiltin(Builtin::kLoadSuperIC, context, receiver,\n home_object_prototype, name, slot, feedback_vector);\n SetAccumulator(result);\n Dispatch();\n }\n \n\nPerhaps predictably, it is handled by the `[LoadSuperIC](<https://source.chromium.org/chromium/chromium/src/+/c4430196c7c0ca1445dc48151912e659c80fc913:v8/src/ic/accessor-assembler.cc;l=3127;drc=242da5037807dde3daf097ba74f875db83b8b613>)` function. The function follows a very similar flow to the `LoadIC` function described in the section [&quot;Caching and using property access handler&quot;.](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#cachingandusingpropertyaccesshandler>) One level of complication introduced by super property is that the property is now defined not on the receiver (`this`) object, but rather, on the parent prototype. As such, the assumptions about object types and maps should be examined not only in the receiver object, but also the parent prototype, because as we have seen, these objects can have different types. In the inline cache code, this is specified by adding a `lookup_start_object` parameter:\n \n \n void AccessorAssembler::LoadSuperIC(const LoadICParameters* p) {\n ...\n TNode<Map> lookup_start_object_map =\n LoadReceiverMap(p->lookup_start_object());\n ...\n \n\nIn the V8 code, the object where the property access is called (where `this` refers to) is referred to as the `receiver` or `home_object`. The confusion between this `lookup_start_object` and `receiver` has led to multiple vulnerabilities in the past. The first bug of this type was [CVE-2021-30517](<https://bugs.chromium.org/p/chromium/issues/detail?id=1203122>) reported by laural. As this bug introduces some concepts and techniques that are useful to understand the other bugs, I&#x27;ll explain it in a bit more detail here.\n\nThe vulnerability happened when a specific type of handler, the `call_handler` is found during a cache lookup:\n \n \n void AccessorAssembler::HandleLoadICHandlerCase(\n const LazyLoadICParameters* p, TNode<Object> handler, Label* miss,\n ExitPoint* exit_point, ICMode ic_mode, OnNonExistent on_nonexistent,\n ElementSupport support_elements, LoadAccessMode access_mode) {\n ...\n \n BIND(&call_handler);\n {\n exit_point->ReturnCallStub(LoadWithVectorDescriptor{}, CAST(handler),\n p->context(), p->receiver(), p->name(), //<------- receiver used in the call.\n p->slot(), p->vector());\n }\n }\n \n\nIn the case of SuperIC, the `lookup_start_object` should have been used as an argument to the call, but instead, the `receiver` was used, causing a function to be called on an object of the wrong type. The `call_handler` is a special handler that is only applicable to objects of type `String` and `Function`:\n \n \n Handle<Object> LoadIC::ComputeHandler(LookupIterator* lookup) {\n Handle<Object> receiver = lookup->GetReceiver();\n ...\n if (!IsAnyHas() && !lookup->IsElement()) {\n if (receiver->IsString() && *lookup->name() == roots.length_string()) {\n TRACE_HANDLER_STATS(isolate(), LoadIC_StringLength);\n return BUILTIN_CODE(isolate(), LoadIC_StringLength);\n }\n ...\n // Use specialized code for getting prototype of functions.\n if (receiver->IsJSFunction() &&\n *lookup->name() == roots.prototype_string() &&\n !JSFunction::cast(*receiver).PrototypeRequiresRuntimeLookup()) {\n TRACE_HANDLER_STATS(isolate(), LoadIC_FunctionPrototypeStub);\n return BUILTIN_CODE(isolate(), LoadIC_FunctionPrototype);\n }\n }\n \n\nWhen the `length` property of a `String` or the `prototype` property of a `JSFunction` is accessed, the inline cache will create a `call_handler` using `BUILTIN_CODE` in the above to encode the C++ function that needs to be called to access these properties. As this is a low-level function, it assumes the object is of the correct type with the correct memory layout, and it is therefore important to check the type of the object before calling the function. In the case of SuperIC, this is done by using the `map` of the `lookup_start_object` to determine a cache match. This ensures that `lookup_start_object` has the correct type to be used by the `call_handler`. However, in the problematic code, `receiver` is used instead for the call, which could have any object type. This causes the type confusion:\n \n \n class C {\n m() {\n super.prototype\n }\n }\n function f() {}\n C.prototype.__proto__ = f //<------ lookup_start_object => f: mathces handler for function type\n let c = new C();\n c.m(); //<----------- receiver => c, calling Function::prototype on c, which is a JS_OBJECT\n \n\nWhile this is the root cause of the problem, a closer look at `ComputeHandler` shows a potential problem in triggering the bug:\n \n \n Handle<Object> LoadIC::ComputeHandler(LookupIterator* lookup) {\n Handle<Object> receiver = lookup->GetReceiver();\n ...\n if (!IsAnyHas() && !lookup->IsElement()) {\n ...\n if (receiver->IsString() && *lookup->name() == roots.length_string()) {\n TRACE_HANDLER_STATS(isolate(), LoadIC_StringLength);\n return BUILTIN_CODE(isolate(), LoadIC_StringLength);\n }\n ...\n }\n \n\nAlthough the `call_handler` is called using the `receiver`, it is also the type of the `receiver` that was checked when the `call_handler` is created for the `super.prototype` operation. As the function that calls `super.prototype` would have to be defined in the definition of a class, it seems that the type of `receiver` cannot (object referred to by `this` in the function) change either. So it looks like the `receiver` would have to be of the correct type despite the mistake. To trigger the bug, we need to go beyond the simple case of the monomorphic inline cache.\n\n### **Megamorphic inline cache**[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#megamorphic-inline-cache>)\n\nAlthough in the simplest case, each function has its own inline cache for each property access, it is possible for different functions to share an inline cache. The inline cache can go through a transition and become megamorphic if it receives too many different object maps:\n \n \n function f(a) {\n return a.x;\n }\n \n\nIn the above, if the argument `a` always has the same `map`, then the inline cache will be monomorphic and can only handle receivers with the specific `map`. When objects of different maps are passed to `a`, the inline cache transitions into a polymorphic inline cache and is capable of handling multiple maps. However, there is a limit on the number of maps that a polymorphic cache can handle. If the number of different maps continues to increase, then the inline cache transitions into a megamorphic inline cache. In this case, the inline cache is shared by different functions and handlers created in one function can be used by another (if both are using the megamorphic cache). For example, in the following:\n \n \n function main() {\n function f() {}\n class A {\n m() {\n return super.prototype;\n }\n };\n A.prototype.__proto__ = f;\n f.prototype;\n let a = new A();\n a.m();\n }\n \n\nEverytime `main` is run, a new `map` is created for the class `A` (because it treats the class definition as new), and everytime `f` is assigned to `A.prototype.__proto__`, a new `map` is also assigned to `f` (because it becomes a prototype). For each call to `main`, the code `f.prototype` in `main` and `super.prototype` in `m` are both accessing properties of objects with a different `map`, so eventually, both of these accesses will use the megamorphic inline cache. When this happens, `super.prototype` will end up using the handler created by `f.prototype`:\n \n \n function main() {\n ...\n A.prototype.__proto__ = f;\n f.prototype; //<------ create handler for map of f in megamorphic cache\n let a = new A();\n a.m(); //<------ calls super.prototype, lookup_start_object is f,\n // so the handler created by f.prototype will be used\n // but `a` (receiver) will be used by the handler\n }\n \n\nBy using the megamorphic inline cache, the mistake made in passing the receiver, instead of `lookup_start_object` to the `call_handler` can be exploited to cause type confusion.\n\nIn October 2021, another bug, [CVE-2021-38001](<https://bugs.chromium.org/p/chromium/issues/detail?id=1260577>) that confused `receiver` and `lookup_start_object` was used in the Tianfu Cup competition by Qixun Zhao to cause remote code execution in Chrome. I&#x27;ll refer readers to the bug ticket for more details.\n\n### **The vulnerability**[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#the-vulnerability>)\n\nThis brings us to the current vulnerability, which is the third bug of this kind in SuperIC. This bug occurs in the property accessor case. When a handler is created for a property accessor:\n \n \n Handle<Object> LoadIC::ComputeHandler(LookupIterator* lookup) {\n ...\n case LookupIterator::ACCESSOR: {\n ...\n CallOptimization call_optimization(isolate(), getter);\n if (call_optimization.is_simple_api_call()) { //<--------- 1.\n CallOptimization::HolderLookup holder_lookup;\n Handle<JSObject> api_holder =\n call_optimization.LookupHolderOfExpectedType(isolate(), map, //<----- 2.\n &holder_lookup);\n \n if (!call_optimization.IsCompatibleReceiverMap(api_holder, holder, //<----- 3.\n holder_lookup) ||\n !holder->HasFastProperties()) {\n TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub);\n return LoadHandler::LoadSlow(isolate());\n }\n \n smi_handler = LoadHandler::LoadApiGetter(\n isolate(), holder_lookup == CallOptimization::kHolderIsReceiver);\n ...\n \n\nIf the `getter` of the property is a `simple_api_call` (check, for 1.), two further checks in 2. and 3. will be done to ensure that `map` is of the appropriate type for `getter` to use. A `simple_api_call` is a way to let V8 use C++ functions defined externally when it is used as an [embedded](<https://v8.dev/docs/embed>) application.\n\nIn Chrome, V8 is not used as a standalone application but rather used as an [embedded](<https://v8.dev/docs/embed>) application in [Blink](<https://www.chromium.org/blink/>) (the rendering engine) and [PDFium](<https://pdfium.googlesource.com/pdfium/+/master/README.md>) (used for viewing PDF files). The interactions between V8 and its embedder (Blink, PDFium, etc.) are handled via the [V8](<https://v8.dev/docs/embed#advanced-guide>)API. On the one hand, the V8 API allows the embedder to access V8 objects and functionalities, while on the other hand, it also allows functions defined in the embedder to be called from V8. The latter functionality is provided by API calls and is used extensively in Blink to create JavaScript objects whose implementations are defined in Blink. I&#x27;ll explain this in more detail later, but in essence, a `simple_api_call` can be thought of as a C++ function defined in the embedder that receives V8 objects as inputs. A `simple_api_call` expects its argument to have a certain memory layout, determined by the V8 object type, and it is important that V8 objects of the correct types are used when calling the function (C++ typing cannot distinguish different V8 object types, and under the hood, a `simple_api_call` simply casts a V8 object to the desired type). This is what the checks in 2. and 3. are about. The only problem is that they are checking the wrong `map`. The `map` being checked is the `map` of the `[lookup_start_object](<https://source.chromium.org/chromium/chromium/src/+/dd1159653baab787bc341ddbf42af5aeab3c1634:v8/src/ic/ic.cc;drc=0e62a0d65e3d7f5c9d968adeae7c478c9434a940;l=962>)`:\n \n \n Handle<Object> LoadIC::ComputeHandler(LookupIterator* lookup) {\n ...\n Handle<Map> map = lookup_start_object_map();\n ...\n case LookupIterator::ACCESSOR: {\n \n\nHowever, recall that when a `super` accessor is called, the `receiver`, instead of the object where the accessor is defined, is used for the call:\n \n \n class B {\n m() {\n return super.prop;\n }\n }\n \n var b = new B();\n var a = {get prop() {return this.x}, x : 'A'};\n b.x = 'B';\n \n B.prototype.__proto__ = A;\n \n b.m() //<-------- 'B'\n \n\nThe above would give `B` instead of `A`. This can be confirmed from how the API[ is called](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:v8/src/ic/accessor-assembler.cc;l=285>):\n \n \n void AccessorAssembler::HandleLoadAccessor(\n const LazyLoadICParameters* p, TNode<CallHandlerInfo> call_handler_info,\n TNode<WordT> handler_word, TNode<DataHandler> handler,\n TNode<IntPtrT> handler_kind, ExitPoint* exit_point) {\n ...\n BIND(&load);\n TNode<IntPtrT> argc = IntPtrConstant(0);\n exit_point->Return(CallApiCallback(context, callback, argc, data,\n api_holder.value(), p->receiver())); //<------- receiver is used to call the api\n }\n \n\nI hope I explained this well enough, but if you find this confusing, you&#x27;re not alone. The situation is actually confusing enough that the initial patch, proposed by the developer, [had to be reverted](<https://chromium.googlesource.com/v8/v8/+/96c5daaea685c72abbc20b8083f6e40c87cabccd>).\n\n## **Interactions between V8 and Blink**[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#interactions-between-v8-and-blink>)\n\nIn Chrome, Blink is responsible for implementing the [Web API](<https://developer.mozilla.org/en-US/docs/Web/API>), which contains objects that are needed to render web pages but are not part of standard JavaScript objects (for example, the DOM window). While the functionalities of these objects and interfaces are implemented in Blink, they are often accessible as JavaScript objects. In this section, I&#x27;ll describe how Blink objects are represented in V8 and how V8 can use functions implemented in Blink.\n\nTake the `[DOMRectReadOnly](<https://developer.mozilla.org/en-US/docs/Web/API/DOMRectReadOnly>)` object for example. This is a simple object with some data fields, `x`, `y`, `height`, `width`, `top`, `right`, `bottom,` and `left` specifying the dimensions of a rectangle. It is defined in `[third_party/blink/renderer/core/geometry/dom_rect_read_only.h](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:third_party/blink/renderer/core/geometry/dom_rect_read_only.h>)`, with simple implementations for accessing these fields:\n \n \n class CORE_EXPORT DOMRectReadOnly : public ScriptWrappable {\n DEFINE_WRAPPERTYPEINFO();\n \n public:\n static DOMRectReadOnly* Create(double x,\n double y,\n double width,\n double height);\n ...\n \n double x() const { return x_; }\n ...\n protected:\n double x_;\n ...\n };\n \n\nWhen a `DOMRectReadOnly` object is created in JavaScript, two objects are created. First the Blink function `DOMRectReadOnly::Create` is called to create a `DOMRectReadOnly` object in Blink. This object is then wrapped in V8 as a `JS_API_OBJECT`, which has the following memory layout:\n\n\n\nThe important parts are the pointers at `0xc` and `0x10`. The first one is a pointer to the static `wrapper_type_info_` field defined in `[DOMRectReadOnly](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:third_party/blink/renderer/core/geometry/dom_rect.h:21>)`, which specifies the type of the Blink object that is wrapped. The second is the pointer at `0x10`, which points to the `DOMRectReadOnly` object created in Blink.\n\nOn the other hand, a Blink object that can be accessed from V8 inherits from the base class `[ScriptWrappable](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/platform/bindings/script_wrappable.h;l=53>)`. This class contains the field `[ScriptWrappable::main_world_wrapper_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/platform/bindings/script_wrappable.h;l=157>)` which provides a link back to the V8 object that wraps this Blink object.\n\n\n\nWhen a property or a method in the Blink object is accessed from JavaScript, generated code implemented in `gen/third_party/blink/bindings/*` is used to invoke the appropriate function implemented in Blink. For `DOMRectReadOnly`, the implementation is in `gen/third_party/blink/renderer/bindings/core/v8/v8_dom_rect_read_only.cc`. (The naming conventions of these files are `v8_<blink class name in snake case>`). For example, when the property `x` is read, the `XAttributeGetCallback` is used as the `getter` for the property `x`:\n \n \n void XAttributeGetCallback(const v8::FunctionCallbackInfo<v8::Value>& info) {\n ...\n v8::Local<v8::Object> v8_receiver = info.This();\n DOMRectReadOnly* blink_receiver =\n V8DOMRectReadOnly::ToWrappableUnsafe(v8_receiver); //<-------- 1.\n auto&& return_value = blink_receiver->x(); //<-------- 2.\n bindings::V8SetReturnValue(info, return_value,\n bindings::V8ReturnValue::PrimitiveType<double>());\n }\n \n\nIn the above, `v8_receiver` is the V8 object that wraps the Blink `DOMRectReadOnly` object. When `V8DOMRectReadOnly::ToWrappableUnsafe` is called, it checks that the V8 object represented by `v8_receiver` is either a `JS_OBJECT`, a `JS_API_OBJECT` or a `JS_SPECIAL_API_OBJECT` using the `[CanHaveInternalField](<https://source.chromium.org/chromium/chromium/src/+/170ad143c610338c831676883be565fff8c71bb3:v8/src/api/api.cc;l=3838>)` check and then returns the pointer at `0x10` as the `blink_receiver` and casts it into a `DOMRectReadOnly` pointer (1. in the above). The function `[DOMRectReadOnly::x](<https://source.chromium.org/chromium/chromium/src/+/af93b3d584c22547ae5d6c49c56df07f2f7a2ca5:third_party/blink/renderer/core/geometry/dom_rect_read_only.h;l=34>)` is then used to retrieve `x` as a double value (2. in the above).\n\nNormally, when calling an API function, like the above, a [check](<https://source.chromium.org/chromium/chromium/src/+/334c8a70297520a868e1a4aa4f48bb157e1ce6d3:v8/src/builtins/builtins-api.cc;l=94>) is performed in `[HandleApiCallHelper](<https://source.chromium.org/chromium/chromium/src/+/334c8a70297520a868e1a4aa4f48bb157e1ce6d3:v8/src/builtins/builtins-api.cc;l=51>)` to ensure that the function is called with a `v8_receiver` wrapping a Blink object of the correct type. However, the type confusion in [&quot;the vulnerability&quot;](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#thevulnerability>) allows me to bypass this and call a Blink `getter` on an arbitrary type of Blink object. This is a very strong primitive.\n\nNote that, because of the type check that is in place in `HandleApiCallHelper`, a super property access using API calls will throw a `TypeError` if the `receiver` is not of the type expected by the `getter`:\n \n \n class B {\n m() {\n return super.x;\n }\n }\n B.prototype.__proto__ = new DOMRectReadOnly(1, 1, 1, 1);\n let b = new B();\n b.m(); //<---- throws TypeError: Illegal invocation\n \n\nTo avoid the type error being thrown while creating the inline cache, the megamorphic cache (see section [Megamorphic inline cache](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#megamorphicinlinecache>)) is used to construct the inline cache in a different function:\n \n \n class B {\n m() {\n return super.x;\n }\n }\n \n function main() {\n var domRect = new DOMRect(1, 1, 1, 1);\n domRect['a' + i] = 1;\n if (i < 20 - 1) {\n B.prototype.__proto__ = {}; //<----- sets to `{}` to avoid throw before triggering bug.\n } else {\n B.prototype.__proto__ = domRect; //<----- triggers the bug after inline cache is created.\n }\n let b = new B();\n \n b.x0 = 0x40404040;\n b.x1 = 0x41414141;\n b.x2 = 0x42424242;\n b.x3 = 0x43434343;\n domRect.x; //<------ create inline cache\n b.m(); //<------ use inline cache, type confusion on i == 20\n } \n \n for (let i = 0; i < 20; i++) main(i);\n \n\nThis is the basic template for triggering the bug (although I later discovered that putting a `try` block around `super.x` also works without the need to use a megamorphic inline cache).\n\n## Exploiting the bug[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#exploiting-the-bug>)\n\nNow that the primitives are clear, exploiting the bug is mostly down to finding Blink objects with the appropriate memory layout to exploit the type confusion. In what follows, I&#x27;ll break down the exploit into three parts:\n\n 1. Construct an arbitrary read primitive that allows me to read from any address.\n 2. Leak the address of a particular V8 object. As the V8 heap is a simple linear heap, having the address of a particular V8 object allows me to also calculate the addresses of objects allocated after it. The read primitive constructed in step one can then be used to read the data in these objects. In particular, I can use it to leak addresses of object maps and addresses of `Array` backing stores.\n 3. Construct the `fakeObj` primitive to fake an arbitrary V8 object. This can then be used to construct a fake `Array` with `length` larger than the size of its backing store to achieve out-of-bounds (OOB) read and write.\n\nOnce I&#x27;ve achieved these primitives, achieving remote code execution is fairly standard.\n\n### Gaining arbitrary read primitive[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#gaining-arbitrary-read-primitive>)\n\nTo achieve arbitrary read, I&#x27;ll use `[DeviceMotionEvent](<https://source.chromium.org/chromium/chromium/src/+/334c8a70297520a868e1a4aa4f48bb157e1ce6d3:third_party/blink/renderer/modules/device_orientation/device_motion_event.h>)`. Its member `interval` is accessed using the `[interval](<https://source.chromium.org/chromium/chromium/src/+/334c8a70297520a868e1a4aa4f48bb157e1ce6d3:third_party/blink/renderer/modules/device_orientation/device_motion_event.cc;l=63>)` function:\n \n \n class DeviceMotionEvent final : public Event {\n DEFINE_WRAPPERTYPEINFO();\n \n public:\n double DeviceMotionEvent::interval() const {\n //reads the field `interval_` from `device_motion_data_`\n return device_motion_data_->Interval();\n }\n \n ...\n private:\n Member<const DeviceMotionData> device_motion_data_;\n }\n \n class MODULES_EXPORT DeviceMotionData final\n : public GarbageCollected<DeviceMotionData> {\n public:\n ...\n double Interval() const { return interval_; }\n ...\n private:\n ...\n double interval_;\n };\n \n\nThis reads the value of `interval_` from an offset of the address of the `DeviceMotionEvent::device_motion_data_` field. So by using the type confusion to apply `interval` to another Blink object, whose field at the offset of `device_motion_data_` can be controlled, I can read data from an arbitrary address. There are various objects in Blink that are essentially data objects, such as the `DOMRect` that we encountered before, as well as the `[DOMMatrix](<https://developer.mozilla.org/en-US/docs/Web/API/DOMMatrix>)`, which consists of sixteen contiguous `double` fields (`m11, ..., m44`). These are ideal objects to use here:\n\n\n\nBy using the type confusion to call `DeviceMotionEvent::interval` on `DOMMatrix`, it is then possible to read 8 bytes at an arbitrary address and returns the result as a `double`.\n\n### **Getting object address**[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#getting-object-address>)\n\nTo get the address of a V8 object, I&#x27;ll use the `[ImageData](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/html/canvas/image_data.h;l=51>)` object. This object can be created with a `[Uint8ClampedArray](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray>)` as its backing store.\n \n \n var imgData = new Uint8ClampedArray(48);\n var img = new ImageData(imgData, 8, 6);\n \n\nThe `imgData` `Uint8ClampedArray` that is passed to the constructor is stored as a pointer to a `DOMUint8ClampedArray` in the field `[ImageData::data_u8_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/html/canvas/image_data.h;l=224>)`. A `DOMUint8ClampedArray` is the Blink representation of a `Uint8ClampedArray` in V8. In particular, as explained in the section [Interactions between V8 and Blink](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#v8blink>), it is a `ScriptWrappable` object that contains a `main_world_wrapper_` field that can be used to retrieve the address of the `Uint8ClampedArray` (`imgData`) in V8.\n\nThe value of the `data_u8_` field (that points to a `DOMUint8ClampedArray`) can be read using a type confusion between a `DOMMatrix` with `ImageData` and then reading the appropriate field in `DOMMatrix` back as a `double`:\n\n\n\nOnce the value of `data_u8_` is obtained, the arbitrary read primitive I constructed before can be used multiple times to first read `data_u8_->main_world_wrapper_`, which is a location that contains the address of the `imgData` V8 object. The arbitrary read primitive can then be applied again to read the address of `imgData` in V8 from this location. This then gives the full address of the `imgData` V8 `Uint8ClampedArray` object. As V8 allocates objects in a linear fashion, addresses of objects that are allocated after `imgData` can also be computed from the address of `imgData`.\n\n### Creating arbitrary fake object[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#creating-arbitrary-fake-object>)\n\nWhile getting an information leak from a `getter` is easy, one may wonder how to turn this primitive into one that also allows arbitrary write. The answer is to cause type confusion in the object returned by the `getter`. Many Blink objects have properties that are JavaScript objects. For example, `[Request](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/fetch/request.h>)` has a `[signal](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/fetch/request.h;l=84>)` property that returns the member `[signal_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/fetch/request.h;l=120>)` as a JavaScript object when the property accessor in `gen/third_party/blink/nderer/bindings/core/v8/v8_request.cc` is called:\n \n \n void SignalAttributeGetCallback(\n const v8::FunctionCallbackInfo<v8::Value>& info) {\n RUNTIME_CALL_TIMER_SCOPE_DISABLED_BY_DEFAULT(info.GetIsolate(),\n \"Blink_Request_signal_Getter\");\n BLINK_BINDINGS_TRACE_EVENT(\"Request.signal.get\");\n \n v8::Local<v8::Object> v8_receiver = info.This();\n Request* blink_receiver = V8Request::ToWrappableUnsafe(v8_receiver);\n auto&& return_value = blink_receiver->signal();\n bindings::V8SetReturnValue(info, return_value, blink_receiver);\n }\n \n\nIn the above, the `return_value` object returned from `blink_receiver->signal()` is a `ScriptWrappable` object (an `AbortSignal` to be precise) that gets returned as a V8 object using the `bindings::V8SetReturnValue` function. This function returns the address of the V8 object located in its `main_world_wrapper_` field. In order to create a fake JavaScript object as the return value, I can use a type confusion between `Request` and `[AudioData](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/modules/webcodecs/audio_data.h>)`. An `AudioData` object has a `[timestamp_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/modules/webcodecs/audio_data.h;l=67>)` field that is at the same offset as the `signal_` property of `Request` and can be set to an arbitrary `int64_t` value when creating the `AudioData`. The type confusion will cause the memory at the address represented by `timestamp_` to be interpreted as the `ScriptWrappable` object `return_value`. By specifying `timestamp_` to the address of some data that I can control, I can create a fake `return_value` object.\n\nTo do so, I first create some JavaScript objects in the following order:\n \n \n var imgDataStore = new ArrayBuffer(48)\n var imgData = new Uint8ClampedArray(imgDataStore);\n var doubleArr = [1.1, 2.2, 3.3, 4.4, 5.5];\n var objArr = [imgData];\n var img = new ImageData(imgData, 8, 6);\n \n\nRecall that in [&quot;Getting object address&quot;](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#objectaddress>). I obtained the address of the `DOMUint8ClampedArray` that backs `img` as the `[data_u8_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/html/canvas/image_data.h;l=224>)` field of `img`. As a `DOMUint8ClampedArray` stores a pointer to its backing store in the field `[raw_base_address_](<https://source.chromium.org/chromium/chromium/src/+/a9048e03fba5ba168b4b84d5c96f9b11e24505fe:third_party/blink/renderer/core/typed_arrays/dom_array_buffer_view.h;l=143;drc=edd35d72b5ae24aab2f4829e2030e6e6ab7b7980>)` at offset 0x10, I can now use the type confusion between `AudioData` and `Request`, and then set `timestamp_` of `AudioData` to the value of `data_u8_ + 0x8`. This causes `data_u8_ + 0x8` to be interpreted as a pointer to a `ScriptWrappble` (`AbortSignal`) object and to be used as the return value for `blink_receiver->signal()`. This means that the `raw_base_address_` field of the `DOMUint8ClampedArray` (offset 0x10) is interpreted as the `main_world_wrapper_` (offset 0x8) of `return_value` from `blink_receiver->signal()`:\n\n\n\nThe first 8 bytes of `imgData` are now interpreted as the address of the V8 object that gets returned from the `Request::signal` JavaScript call. By setting it to an address with data that I control, I can use this to create a fake V8 object.\n\nTo fake this V8 object, I&#x27;ll use the element store of the array `doubleArr`. As explained in the section &quot;Trick #1: Use ArrayLiterals for Information&quot; of [Exploiting CVE-2021-21225 and disabling W^X](<https://tiszka.com/blog/CVE_2021_21225_exploit.html>) by Brendon Tiszka, the elements in a small `Array` are inlined and either placed immediately before or after the `Array`, depending on elements type. The offset to the inlined elements can be found easily using `%DebugPrint`:\n \n \n var doubleArr = [1.1, 2.2, 3.3, 4.4, 5.5];\n %DebugPrint(doubleArr)\n DebugPrint: 0x20870004c869: [JSArray]\n ...\n - elements: 0x20870004c839 <FixedDoubleArray[5]> [PACKED_DOUBLE_ELEMENTS]\n ...\n \n\nThe address of the elements is stored in the field `elements`. So in our case, for example, the elements are placed at an offset of `-0x30` from the `Array` itself (`0x20870004c839 - 0x20870004c869`). By using the address of `imgData` obtained previously, the address of the `elements` can also be computed. This means that I can use `doubleArr` to create a V8 fake object and use it in the `main_world_wrapper_` of the fake `ScriptWrappable` (`AbortSignal`) object:\n\n\n\nI can then use this to obtain a fake `Array` that will give me an out-of-bounds (OOB) read and write primitive. In V8, a JavaScript `Array` has the following memory layout.\n\n\n\nA JavaScript object has its `map` as its first field. In V8, this field is used for determining the type of an object, so by putting the `map` of a double `Array` in our fake object, V8 will interpret it as a double array. By setting the `elements` field, which points to the backing store of the `Array`, to the same value as the `elements` of `doubleArr`, and then setting `length` to be a large value, I can cause the fake double `Array` that is returned from `Request::signal` to perform out-of-bounds reads and writes. Note that all the fields are of size 4 bytes. This is because all V8 addresses are stored as _compressed_ pointers. As the top 32 bits of all addresses within a V8 heap are the same, only the lower 32 bits of an address are stored. These addresses are called compressed pointers. The top 32 bits of the addresses are stored in a registry, which is then applied to the compressed addresses to obtain 64-bit addresses when dereferencing.\n\nOnce out-of-bounds read and write is achieved, gaining remote code execution is fairly standard and straightforward. Readers can consult, for example, &quot;[Exploiting CVE-2021-21225 and disabling W^X](<https://tiszka.com/blog/CVE_2021_21225_exploit.html>)&quot; by Brendon Tiszka or the &quot;Gaining code execution&quot; section of my other [article](<https://securitylab.github.com/research/in_the_wild_chrome_cve_2021_30632/>).\n\nAt this stage, gaining remote code execution consists of the following steps. Let&#x27;s call the fake object I&#x27;ve obtained the fake `signal` (which is interpreted as a double `Array` with a large length that allows me to overwrite and read any object that is placed after the variable `doubleArr`).\n\n 1. Place an `Object` `Array` after `doubleArr,`and use the OOB read primitive to read the addresses of the objects stored in this array. This allows me to obtain the address of any V8 object.\n 2. Create a `[WebAssembly.Instance](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance>)` object, and use step one to obtain its address, then use the arbitrary address read primitive to read the pointer to the compiled `wasm` code. This will be the address of a `RWX` page that contains the code to be executed when the `main` function of the `WebAssembly.Instance` object is called. (The `[WebAssembly.Instance](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance>)` is created in the &quot;Old space,&quot; so its address cannot be read simply by using the OOB read primitive.)\n 3. Place a `TypedArray` object after `doubleArr,` and use the OOB write primitive to overwrite its `data_ptr` field to the `RWX` page address leaked from step two.\n 4. As the `data_ptr` field of a `TypedArray` points to its backing store, writing to the `TypedArray` now overwrites the `wasm` code that will be executed by the `WebAssembly.Instance` object from step two. I can then write shell code to the `TypedArray` to achieve code execution.\n\nAs I&#x27;ve reported in my [previous article](<https://securitylab.github.com/research/in_the_wild_chrome_cve_2021_37975/>) on Linux and ChromeOS, a flag `wasm-memory-protection-keys` was introduced to protect `wasm` code region from being overwritten (see &quot;The beginning of the end of `wasm RWX`?&quot; section in that article). This, however, can be bypassed by simply overwriting the `wasm-memory-protection-keys` as I did in that article.\n\nThe exploit can be found [here](<https://github.com/github/securitylab/tree/main/SecurityExploits/Chrome/v8/CVE_2022_1134>) with some setup notes.\n\n## The four-part trilogy[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#the-four-part-trilogy>)\n\nAs functionalities in V8 are often implemented in multiple places, according to the optimization level, the same bug sometimes occurs multiple times in the different implementations. For example, the bug [CVE-2018-18359](<https://bugs.chromium.org/p/chromium/issues/detail?id=907714>) reported by cyrilliu was an OOB access bug, because `[Reflect.construct](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/construct>)` assumed all constructor functions have the `prototype` field (not the same as the `prototype` field in the JavaScript object, but rather an internal field in the C++ object) and accessed it from a memory offset directly. Unfortunately, the `[Proxy constructor](<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy>)` is an exception. Not only does it not have the `prototype` field, but accessing it can result in OOB access. This bug was found in the slow runtime implementation. A few months later, the same issue was found in the JIT implementation of `Reflect.construct` by Samuel Gro\u00df as [CVE-2019-5843](<https://bugs.chromium.org/p/project-zero/issues/detail?id=1799>). Yet a few months later, the same bug in the `[torque](<https://v8.dev/docs/torque>)` implementation was found as [CVE-2019-5877](<https://bugs.chromium.org/p/chromium/issues/detail?id=999310>) and was used as part of the [TiYuZong full chain](<https://github.com/secmob/TiYunZong-An-Exploit-Chain-to-Remotely-Root-Modern-Android-Devices/blob/master/us-20-Gong-TiYunZong-An-Exploit-Chain-to-Remotely-Root-Modern-Android-Devices-wp.pdf>) of Guang Gong. So let&#x27;s learn from history, and check the other implementations of super property access. As it turns out, the JIT implementation also suffers the same problem. When compiling optimized code for simple API property access, the JIT implementation checks the map in `[AccessorAccessInfoHelper](<https://source.chromium.org/chromium/chromium/src/+/75c36c7712bea160e69de6b87b864dfcebab239e:v8/src/compiler/access-info.cc;l=573>)`:\n \n \n PropertyAccessInfo AccessorAccessInfoHelper(\n Isolate* isolate, Zone* zone, JSHeapBroker* broker,\n const AccessInfoFactory* ai_factory, MapRef receiver_map, NameRef name,\n MapRef map, base::Optional<JSObjectRef> holder, AccessMode access_mode,\n AccessorsObjectGetter get_accessors) {\n ...\n CallOptimization::HolderLookup lookup;\n Handle<JSObject> holder_handle = broker->CanonicalPersistentHandle(\n optimization.LookupHolderOfExpectedType(\n broker->local_isolate_or_isolate(), receiver_map.object(), //<------- checks that the receiver_map is compatible\n &lookup));\n \n\nOn the face of it, it seems to be correct, as we&#x27;ve seen in the section [&quot;The vulnerability,&quot;](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#heading=h.iddgaybfi3d2>) that property accessor operates on the `receiver` rather than the `lookup_start_object`, so the `map` of the `receiver` should be checked, which is what it does here. The only problem is that the `receiver_map` is not the `map` of the `receiver`. The `AccessorAccessInfoHelper` is used, for example, in `[ReducedNameAccess](<https://source.chromium.org/chromium/chromium/src/+/75c36c7712bea160e69de6b87b864dfcebab239e:v8/src/compiler/js-native-context-specialization.cc;l=1040>)` to create `PropertyAccessInfo` (2 in the below snippet):\n \n \n Reduction JSNativeContextSpecialization::ReduceNamedAccess(\n Node* node, Node* value, NamedAccessFeedback const& feedback,\n AccessMode access_mode, Node* key) {\n ...\n ZoneVector<MapRef> inferred_maps(zone());\n if (!InferMaps(lookup_start_object, effect, &inferred_maps)) { //<----------- 1.\n for (const MapRef& map : feedback.maps()) {\n inferred_maps.push_back(map);\n }\n }\n ...\n {\n ZoneVector<PropertyAccessInfo> access_infos_for_feedback(zone());\n for (const MapRef& map : inferred_maps) {\n ...\n PropertyAccessInfo access_info = broker()->GetPropertyAccessInfo(\n map, feedback.name(), access_mode, dependencies()); //<------------ 2.\n access_infos_for_feedback.push_back(access_info);\n \n\nThe argument `map` passed in `GetPropertyAccessInfo` in 2 eventually becomes the `receiver_map` that is passed to `AccessorAccessInfoHelper`. However, this `map` is, in fact, a map that is inferred from the `lookup_start_object`, instead of the `receiver` (1 in the above), so the `lookup_start_object` map was checked in the JIT implementation as well. On the other hand, the `[BuildPropertyLoad](<https://source.chromium.org/chromium/chromium/src/+/75c36c7712bea160e69de6b87b864dfcebab239e:v8/src/compiler/js-native-context-specialization.cc;l=2220>)` is used to compile code for loading properties, which uses the actual `receiver` to make the call:\n \n \n base::Optional<JSNativeContextSpecialization::ValueEffectControl>\n JSNativeContextSpecialization::BuildPropertyLoad(\n Node* lookup_start_object, Node* receiver, Node* context, Node* frame_state,\n Node* effect, Node* control, NameRef const& name,\n ZoneVector<Node*>* if_exceptions, PropertyAccessInfo const& access_info) {\n ...\n Node* value;\n if (access_info.IsNotFound()) {\n value = jsgraph()->UndefinedConstant();\n } else if (access_info.IsFastAccessorConstant() ||\n access_info.IsDictionaryProtoAccessorConstant()) {\n ...\n value =\n InlinePropertyGetterCall(receiver, receiver_mode, context, frame_state, //<---- receiver used for making getter call\n &effect, &control, if_exceptions, access_info);\n } else if (access_info.IsModuleExport()) {\n \n\nSo the JIT implementation also suffers the problem. I reported this as bug [1309467](<https://bugs.chromium.org/p/chromium/issues/detail?id=1309467>) and included a proof of concept to show that it can bypass the original [patch](<https://chromium.googlesource.com/v8/v8/+/9c3d4b3556b2797fa9d9f4bee915e8502608312f>). It was disclosed in Chrome release [102.0.5005.61](<https://chromereleases.googleblog.com/2022/05/stable-channel-update-for-desktop_24.html>) as CVE-2022-1869.\n\n## Conclusions[](<https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/#conclusions>)\n\nIn this post I&#x27;ve covered CVE-2022-1134 and some variants of the bug. I&#x27;ve also looked at some internals of inline caching in V8 and how V8 interacts with Blink via the V8 API. Apart from being a close variant of two previous bugs (with one used in the high profile Tianfu cup pwning contest), which highlights the complexity of the property access system in V8, the current bug also involves the interactions between Blink and V8 and could not be found by fuzzing V8 alone (which is unlike the previous two variants).\n\nIn most public research, researchers either focus on bugs that are specific to V8 or Blink, and the bugs involved rarely cross the boundary between the two. Recently, there have been bugs that were exploited in the wild that involve Blink objects breaking assumptions in V8, such as [CVE-2021-30551](<https://googleprojectzero.github.io/0days-in-the-wild//0day-RCAs/2021/CVE-2021-30551.html>) and [CVE-2022-1096](<https://chromereleases.googleblog.com/2022/03/stable-channel-update-for-desktop_25.html>). Being able to discover and exploit these bugs requires a great wealth and depth of knowledge in both Blink and V8, and these bugs give us a glimpse of both the resources and expertise that bad actors possess and perhaps an area where more research is needed.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2022-06-29T18:39:46", "type": "github", "title": "The Chromium super (inline cache) type confusion", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-18359", "CVE-2019-5843", "CVE-2019-5877", "CVE-2021-21225", "CVE-2021-30517", "CVE-2021-30551", "CVE-2021-38001", "CVE-2022-1096", "CVE-2022-1134", "CVE-2022-1869"], "modified": "2022-07-06T16:18:38", "id": "GITHUB:D9472F716C46C02F88677DBAD0EEA334", "href": "https://github.blog/2022-06-29-the-chromium-super-inline-cache-type-confusion/", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "threatpost": [{"lastseen": "2021-06-08T22:18:00", "description": "Microsoft jumped on 50 vulnerabilities in this month\u2019s [Patch Tuesday update](<https://msrc.microsoft.com/update-guide>), issuing fixes for CVEs in Microsoft Windows, .NET Core and Visual Studio, Microsoft Office, Microsoft Edge (Chromium-based and EdgeHTML), SharePoint Server, Hyper-V, Visual Studio Code \u2013 Kubernetes Tools, Windows HTML Platform, and Windows Remote Desktop.\n\nFive of the CVEs are rated Critical and 45 are rated Important in severity. Microsoft reported that six of the bugs are currently under active attack, while three are publicly known at the time of release.\n\nThe number might seem light \u2013 it represents six fewer patches than Microsoft [released in May](<https://threatpost.com/wormable-windows-bug-dos-rce/166057/>) \u2013 but the number of critical vulnerabilities ticked up to five month-over-month.\n\n[](<https://threatpost.com/newsletter-sign/>)\n\nThose actively exploited vulnerabilities can enable an attacker to hijack a system. They have no workarounds, so some security experts are recommending that they be patched as the highest priority.\n\nThe six CVEs under active attack in the wild include four elevation of privilege vulnerabilities, one information disclosure vulnerability and one remote code execution (RCE) vulnerability.\n\n## Critical Bugs of Note\n\n[CVE-2021-31985](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31985>) is a critical RCE vulnerability in Microsoft\u2019s Defender antimalware software that should grab attention. A similar, critical bug in Defender was [patched in January](<https://threatpost.com/critical-microsoft-defender-bug-exploited/162992/>). The most serious of the year\u2019s first Patch Tuesday, that earlier Defender bug was an RCE vulnerability that came under active exploit.\n\nAnother critical flaw is [CVE-2021-31963](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31963>), a Microsoft SharePoint Server RCE vulnerability. Jay Goodman, director of product marketing at Automox, said in a [blog post](<https://blog.automox.com/automox-experts-weigh-in-june-patch-tuesday-2021>) that an attacker exploiting this vulnerability \u201ccould take control of a system where they would be free to install programs, view or change data, or create new accounts on the target system with full user rights.\u201d \nWhile Microsoft reports that this vulnerability is less likely to be exploited,Goodman suggested that organizations don\u2019t let it slide: \u201cPatching critical vulnerabilities in the 72-hour window before attackers can weaponize is an important first step to maintaining a safe and secure infrastructure,\u201d he observed.\n\n[](<https://media.threatpost.com/wp-content/uploads/sites/103/2021/06/08141612/Sophos-impact-chart-June-21-patch-Tuesday-e1623176186946.png>)\n\nA year-to-date summary of 2021 Microsoft vulnerability releases as of June. Source: Sophos\n\n## Bugs Exploited in the Wild\n\nMicrosoft fixed a total of seven zero-day vulnerabilities. One was [CVE-2021-31968](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-31968>), Windows Remote Desktop Services Denial of Service Vulnerability that was publicly disclosed but hasn\u2019t been seen in attacks. It was issued a CVSS score of 7.5.\n\nThese are the six flaws that MIcrosoft said are under active attack, all of them also zero days.\n\n * [CVE-2021-31955](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955>) \u2013 Windows Kernel Information Disclosure Vulnerability. Rating: Important. CVSS 5.5\n * [CVE-2021-31956](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31956>) \u2013 Windows NTFS Elevation of Privilege Vulnerability. Rating: Important. CVSS 7.8\n * [CVE-2021-33739](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33739>) \u2013 Microsoft DWM Core Library Elevation of Privilege Vulnerability. Rating: Important. CVSS 8.4\n * [CVE-2021-33742](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33742>) \u2013 Windows MSHTML Platform Remote Code Execution Vulnerability. Rating: **Critical**. CVSS 7.5\n * [CVE-2021-31199](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31199>) \u2013 Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability. Rating: Important. CVSS 5.2\n * [CVE-2021-31201](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31201>) \u2013 Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability. Rating: Important. CVSS 5.2\n\n## CVE-2021-33742\n\nThis RCE vulnerability exploits MSHTML, a component used by the Internet Explorer engine to read and display content from websites.The bug could allow an attacker to execute code on a target system if a user views specially crafted web content. The [Zero Day Initiative](<https://www.zerodayinitiative.com/blog/2021/6/8/the-june-2021-security-update-review>)\u2018s (ZDI\u2019s) Dustin Childs noted in his Patch Tuesday analysis that since the vulnerability is in the Trident (MSHTML) engine itself, many different applications are affected, not just Internet Explorer. \u201cIt\u2019s not clear how widespread the active attacks are, but considering the vulnerability impacts all supported Windows versions, this should be at the top of your test and deploy list,\u201d he recommended.\n\nThe vulnerability doesn\u2019t require special privilege to exploit, though the attack complexity is high, if that\u2019s any consolation. An attacker would need to do some extra legwork to pull it off, noted Satnam Narang, staff research engineer at Tenable, in an email to Threatpost on Tuesday.\n\nImmersive Labs\u2019 Kevin Breen, director of cyber threat research, noted that visiting a website in a vulnerable browser is \u201ca simple way for attackers to deliver this exploit.\u201d He told Threatpost via email on Tuesday that since the library is used by other services and applications, \u201cemailing HTML files as part of a phishing campaign is also a viable method of delivery.\u201d\n\n[Sophos decreed](<https://news.sophos.com/en-us/2021/06/08/six-in-the-wild-exploits-patched-in-microsofts-june-security-fix-release/>) this one to be the top concern of this month\u2019s crop, given that it\u2019s already being actively exploited by malicious actors.\n\n## CVE-2021-31955, CVE-2021-31956: Used in PuzzleMaker Targeted Malware\n\nCVE-2021-31955 is an information disclosure vulnerability in the Windows Kernel, while CVE-2021-31956 is an elevation of privilege vulnerability in Windows NTFS. The ZDI\u2019s Childs noted that CVE-2021-31956 was reported by the same researcher who found CVE-2021-31955, an information disclosure bug also listed as under active attack. They could be linked, he suggested: \u201cIt\u2019s possible these bugs were used in conjunction, as that is a common technique \u2013 use a memory leak to get the address needed to escalate privileges. These bugs are important on their own and could be even worse when combined. Definitely prioritize the testing and deployment of these patches.\u201d\n\nHe was spot-on. On Tuesday, Kaspersky announced that its researchers had discovered a highly targeted malware campaign launched in April against multiple companies, in which a previously unknown threat actor used a chain of Chrome and Windows zero-day exploits: Namely, these two.\n\nIn a press release, Kaspersky said that one of the exploits was used for RCE in the Google Chrome web browser, while the other was an elevation of privilege exploit fine-tuned to target \u201cthe latest and most prominent builds\u201d of Windows 10.\n\n\u201cRecent months have seen a wave of advanced threat activity exploiting zero-days in the wild,\u201d according to the release. \u201cIn mid-April, Kaspersky experts discovered yet a new series of highly targeted exploit attacks against multiple companies that allowed the attackers to stealthily compromise the targeted networks.\u201d\n\nKaspersky hasn\u2019t yet found a connection between these attacks and any known threat actors, so it\u2019s gone ahead and dubbed the actor PuzzleMaker. It said that all the attacks were conducted through Chrome and used an exploit that allowed for RCE. Kaspersky researchers weren\u2019t able to retrieve the code for the exploit, but the timeline and availability suggests the attackers were using the now-patched [CVE-2021-21224](<https://www.cvedetails.com/cve/CVE-2021-21224>) vulnerability in Chrome and Chromium browsers that allows attackers to exploit the Chrome renderer process (the processes that are responsible for what happens inside users\u2019 tabs).\n\nKaspersky experts did find and analyze the second exploit, however: An elevation of privilege exploit that exploits two distinct vulnerabilities in the Microsoft Windows OS kernel: CVE-2021-31955 and CVE-2021-31956. The CVE-2021-31955 bug \u201cis affiliated with SuperFetch, a feature first introduced in Windows Vista that aims to reduce software loading times by pre-loading commonly used applications into memory,\u201d they explained.\n\nThe second flaw, CVE-2021-31956, is an Elevation of Privilege vulnerability and heap-based buffer overflow. Kaspersky said that attackers used this vulnerability alongside Windows Notification Facility (WNF) \u201cto create arbitrary memory read/write primitives and execute malware modules with system privileges.\u201d\n\n\u201cOnce the attackers have used both the Chrome and Windows exploits to gain a foothold in the targeted system, the stager module downloads and executes a more complex malware dropper from a remote server,\u201d they continued. \u201cThis dropper then installs two executables, which pretend to be legitimate files belonging to Microsoft Windows OS. The second of these two executables is a remote shell module, which is able to download and upload files, create processes, sleep for certain periods of time, and delete itself from the infected system.\u201d\n\nBoris Larin, senior security researcher with Kaspersky\u2019s Global Research and Analysis Team (GReAT), said that the team hasn\u2019t been able to link these highly targeted attacks to any known threat actor: Hence the name PuzzleMaker and the determination to closely monitor the security landscape \u201cfor future activity or new insights about this group,\u201d he was quoted as saying in the press release.\n\nIf the current trend is any indication, expect to see more of the same, Larin said. \u201cOverall, of late, we\u2019ve been seeing several waves of high-profile threat activity being driven by zero-day exploits,\u201d he said. \u201cIt\u2019s a reminder that zero days continue to be the most effective method for infecting targets. Now that these vulnerabilities have been made publicly known, it\u2019s possible that we\u2019ll see an increase of their usage in attacks by this and other threat actors. That means it\u2019s very important for users to download the latest patch from Microsoft as soon as possible.\u201d\n\n## CVE-2021-31199/CVE-2021-31201\n\nThe two Enhanced Cryptographic Provider Elevation of Privilege vulnerabilities are linked to the Adobe Reader bug that [came under active attack](<https://threatpost.com/adobe-zero-day-bug-acrobat-reader/166044/>) last month (CVE-2021-28550), ZDI explained. \u201cIt\u2019s common to see privilege escalation paired with code execution bugs, and it seems these two vulnerabilities were the privilege escalation part of those exploits,\u201d he explained. \u201cIt is a bit unusual to see a delay between patch availability between the different parts of an active attack, but good to see these holes now getting closed.\u201d\n\n## CVE-2021-33739\n\nBreen noted that privilege escalation vulnerabilities such as this one in the Microsoft DWM Core Library are just as valuable to attackers as RCEs. \u201cOnce they have gained an initial foothold, they can move laterally across the network and uncover further ways to escalate to system or domain-level access,\u201d he said. \u201cThis can be hugely damaging in the event of ransomware attacks, where high privileges can enable the attackers to stop or destroy backups and other security tools.\u201d\n\n**Download our exclusive FREE Threatpost Insider eBook, ****_\u201c_**[**_2021: The Evolution of Ransomware_**](<https://threatpost.com/ebooks/2021-the-evolution-of-ransomware/?utm_source=April_eBook&utm_medium=AR