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{"id": "CVE-2021-20631", "vendorId": null, "type": "cve", "bulletinFamily": "NVD", "title": "CVE-2021-20631", "description": "Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.", "published": "2021-03-18T01:15:00", "modified": "2021-03-23T13:43:00", "epss": [{"cve": "CVE-2021-20631", "epss": 0.00054, "percentile": 0.20549, "modified": "2023-05-27"}], "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:P/A:N"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE", "baseScore": 4.0}, "severity": "MEDIUM", "exploitabilityScore": 8.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM"}, "exploitabilityScore": 2.8, "impactScore": 3.6}, "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-20631", "reporter": "vultures@jpcert.or.jp", "references": ["https://kb.cybozu.support/article/36871/", "https://jvn.jp/en/jp/JVN45797538/index.html"], "cvelist": ["CVE-2021-20631"], "immutableFields": [], "lastseen": "2023-05-27T14:18:18", "viewCount": 39, "enchantments": {"dependencies": {"references": [{"type": "jvn", "idList": ["JVN:45797538"]}], "rev": 4}, "score": {"value": 5.8, "vector": "NONE"}, "backreferences": {"references": [{"type": "jvn", "idList": ["JVN:45797538"]}]}, "exploitation": null, "affected_software": {"major_version": [{"name": "cybozu office", "version": 10}]}, "epss": [{"cve": "CVE-2021-20631", "epss": 0.00054, "percentile": 0.20499, "modified": "2023-05-07"}], "vulnersScore": 5.8}, "_state": {"dependencies": 1685209315, "score": 1685197916, "affected_software_major_version": 0, "epss": 0}, "_internal": {"score_hash": "43e95adbdf03590502c0f65709b429ec"}, "cna_cvss": {"cna": null, "cvss": {}}, "cpe": ["cpe:/a:cybozu:office:10.8.4"], "cpe23": ["cpe:2.3:a:cybozu:office:10.8.4:*:*:*:*:*:*:*"], "cwe": ["CWE-20"], "affectedSoftware": [{"cpeName": "cybozu:office", "version": "10.8.4", "operator": "le", "name": "cybozu office"}], "affectedConfiguration": [], "cpeConfiguration": {"CVE_data_version": "4.0", "nodes": [{"operator": "OR", "children": [], "cpe_match": [{"vulnerable": true, "cpe23Uri": "cpe:2.3:a:cybozu:office:10.8.4:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndIncluding": "10.8.4", "cpe_name": []}]}]}, "extraReferences": [{"url": "https://kb.cybozu.support/article/36871/", "name": "https://kb.cybozu.support/article/36871/", "refsource": "MISC", "tags": ["Vendor Advisory"]}, {"url": "https://jvn.jp/en/jp/JVN45797538/index.html", "name": "https://jvn.jp/en/jp/JVN45797538/index.html", "refsource": "MISC", "tags": ["Third Party Advisory"]}], "product_info": [{"vendor": "Cybozu, Inc.", "product": "Cybozu Office"}], "solutions": [], "workarounds": [], "impacts": [], "problemTypes": [{"descriptions": [{"description": "Improper Input Validation", "lang": "en", "type": "text"}]}], "exploits": [], "assigned": "1976-01-01T00:00:00"}

{"prion": [{"lastseen": "2023-08-16T01:06:21", "description": "Improper input validation vulnerability in Custom App of Cybozu Office 10.0.0 to 10.8.4 allows authenticated attacker to alter the data of Custom App via unspecified vectors.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-03-18T01:15:00", "type": "prion", "title": "CVE-2021-20631", "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-20631"], "modified": "2021-03-23T13:43:00", "id": "PRION:CVE-2021-20631", "href": "https://kb.prio-n.com/vulnerability/CVE-2021-20631", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:P/A:N"}}], "jvn": [{"lastseen": "2023-05-27T14:53:11", "description": "Cybozu Office provided by Cybozu, Inc. contains multiple vulnerabilities listed below. \n\n**[CyVDB-1657] Operational restrictions bypass vulnerability in Scheduler ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20624 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:N/I:P/A:N| **Base Score: 4.0** \n \n**[CyVDB-1727] Operational restrictions bypass vulnerability in Bulletin Board ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20625 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:N/I:P/A:N| **Base Score: 4.0** \n \n**[CyVDB-1895][CyVDB-2658] Operational restrictions bypass vulnerability in Workflow ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20626 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:N/I:P/A:N| **Base Score: 4.0** \n \n**[CyVDB-1899] Cross-site scripting vulnerability in Address Book ([CWE-79](<https://cwe.mitre.org/data/definitions/79.html>))** \\- CVE-2021-20627 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N| **Base Score: 4.7** \nCVSS v2| AV:N/AC:H/Au:N/C:N/I:P/A:N| **Base Score: 2.6** \n \n**[CyVDB-1924] Cross-site scripting vulnerability in Address Book ([CWE-79](<https://cwe.mitre.org/data/definitions/79.html>))** \\- CVE-2021-20628 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N| **Base Score: 4.7** \nCVSS v2| AV:N/AC:H/Au:N/C:N/I:P/A:N| **Base Score: 2.6** \n \n**[CyVDB-2014] Cross-site scripting vulnerability in E-mail ([CWE-79](<https://cwe.mitre.org/data/definitions/79.html>))** \\- CVE-2021-20629 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N| **Base Score: 4.7** \nCVSS v2| AV:N/AC:H/Au:N/C:N/I:P/A:N| **Base Score: 2.6** \n \n**[CyVDB-2018] Viewing restrictions bypass vulnerability in Phone Messages ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20630 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:P/I:N/A:N| **Base Score: 4.0** \n \n**[CyVDB-2063] Improper input validation vulnerability in Custom App ([CWE-20](<https://cwe.mitre.org/data/definitions/20.html>))** \\- CVE-2021-20631 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:N/I:N/A:P| **Base Score: 4.0** \n \n**[CyVDB-2263] Viewing restrictions bypass vulnerability in Bulletin Board ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20632 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:P/I:N/A:N| **Base Score: 4.0** \n \n**[CyVDB-2310] Viewing restrictions bypass vulnerability in Cabinet ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20633 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:P/I:N/A:N| **Base Score: 4.0** \n \n**[CyVDB-2764] Viewing restrictions bypass vulnerability in Custom App ([CWE-264](<https://cwe.mitre.org/data/definitions/264.html>))** \\- CVE-2021-20634 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N| **Base Score: 4.3** \nCVSS v2| AV:N/AC:L/Au:S/C:P/I:N/A:N| **Base Score: 4.0** \n \n**[CyVDB-1900] Cross-site scripting vulnerability in Address Book ([CWE-79](<https://cwe.mitre.org/data/definitions/79.html>))** \\- CVE-2021-20849 \n\nVersion| Vector| Score \n---|---|--- \nCVSS v3| CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N| **Base Score: 4.7** \nCVSS v2| AV:N/AC:H/Au:N/C:N/I:P/A:N| **Base Score: 2.6**\n\n ## Impact\n\n * [CyVDB-1657]: \nA user who can log in to the product may alter the data of Scheduler without appropriate privileges.\n * [CyVDB-1727]: \nA user who can log in to the product may alter the data of Bulletin Board without appropriate privileges.\n * [CyVDB-1895] and [CyVDB-2658]: \nA user who can log in to the product may alter the data of Workflow without appropriate privileges.\n * [CyVDB-1899], [CyVDB-1924], [CyVDB-2014] and [CyVDB-1900]: \nAn arbitrary script may be executed on a logged-in user's web browser. Note that [CyVDB-1924] issue only occurs when using Mozilla firefox.\n * [CyVDB-2018]: \nA user who can log in to the product may obtain the data of Phone Messages without the viewing privileges.\n * [CyVDB-2063]: \nA user who can log in to the product may alter the data of Custom App.\n * [CyVDB-2263]: \nA user who can log in to the product may obtain the data of Bulletin Board without the viewing privileges.\n * [CyVDB-2310]: \nA user who can log in to the product may obtain the data of Cabinet without the viewing privileges.\n * [CyVDB-2764]: \nA user who can log in to the product may obtain the data of Custom App without the viewing privileges.\n\n ## Solution\n\n**Update the Software** \nUpdate to the latest version according to the information provided by the developer.\n\n ## Products Affected\n\n * Cybozu Office 10.0.0 to 10.8.4\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-03-15T00:00:00", "type": "jvn", "title": "JVN#45797538: Multiple vulnerabilities in Cybozu Office", "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-2021-20624", "CVE-2021-20625", "CVE-2021-20626", "CVE-2021-20627", "CVE-2021-20628", "CVE-2021-20629", "CVE-2021-20630", "CVE-2021-20631", "CVE-2021-20632", "CVE-2021-20633", "CVE-2021-20634", "CVE-2021-20849"], "modified": "2021-12-17T00:00:00", "id": "JVN:45797538", "href": "http://jvn.jp/en/jp/JVN45797538/index.html", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}]}