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{"id": "RH:CVE-2021-33620", "vendorId": null, "type": "redhatcve", "bulletinFamily": "info", "title": "CVE-2021-33620", "description": "An input validation flaw was found in Squid. This issue could allow a remote server to perform a denial of service against all clients using the proxy when delivering HTTP response messages. The highest threat from this vulnerability is to system availability.\n#### Mitigation\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. \n\n", "published": "2021-05-28T16:42:33", "modified": "2023-03-08T19:51:38", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "SINGLE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "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:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM"}, "exploitabilityScore": 2.8, "impactScore": 3.6}, "href": "https://access.redhat.com/security/cve/cve-2021-33620", "reporter": "redhat.com", "references": ["https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f/", "https://bugzilla.redhat.com/show_bug.cgi?id=1959537"], "cvelist": ["CVE-2021-33620"], "immutableFields": [], "lastseen": "2023-03-08T20:16:59", "viewCount": 54, "enchantments": {"dependencies": {"references": [{"type": "almalinux", "idList": ["ALSA-2021:4292"]}, {"type": "amazon", "idList": ["ALAS-2023-1687", "ALAS2-2023-1950"]}, {"type": "cve", "idList": ["CVE-2021-33620"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2685-1:9A36F"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-33620"]}, {"type": "fedora", "idList": ["FEDORA:C4C0D3091C28", "FEDORA:CC54030AE7DD"]}, {"type": "mageia", "idList": ["MGASA-2021-0237"]}, {"type": "nessus", "idList": ["AL2_ALAS-2023-1950.NASL", "ALA_ALAS-2023-1687.NASL", "CENTOS8_RHSA-2021-4292.NASL", "DEBIAN_DLA-2685.NASL", "EULEROS_SA-2021-2317.NASL", "EULEROS_SA-2021-2433.NASL", "EULEROS_SA-2021-2519.NASL", "EULEROS_SA-2021-2618.NASL", "ORACLELINUX_ELSA-2021-4292.NASL", "ORACLELINUX_ELSA-2021-9465.NASL", "PHOTONOS_PHSA-2021-3_0-0269_SQUID.NASL", "PHOTONOS_PHSA-2021-4_0-0063_SQUID.NASL", "REDHAT-RHSA-2021-4292.NASL", "SUSE_SU-2022-2367-1.NASL", "SUSE_SU-2022-2553-1.NASL", "UBUNTU_USN-4981-1.NASL"]}, {"type": "oraclelinux", "idList": ["ELSA-2021-4292", "ELSA-2021-9465"]}, {"type": "osv", "idList": ["OSV:DLA-2685-1", "OSV:DSA-4924-1"]}, {"type": "photon", "idList": ["PHSA-2021-0063", "PHSA-2021-0269", "PHSA-2021-3.0-0269", "PHSA-2021-4.0-0063"]}, {"type": "redhat", "idList": ["RHSA-2021:4292"]}, {"type": "rocky", "idList": ["RLSA-2021:4292"]}, {"type": "suse", "idList": ["SUSE-SU-2022:2553-1"]}, {"type": "ubuntu", "idList": ["USN-4981-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-33620"]}, {"type": "veracode", "idList": ["VERACODE:30743"]}]}, "score": {"value": 0.2, "vector": "NONE"}, "backreferences": {"references": [{"type": "cve", "idList": ["CVE-2021-33620"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2685-1:9A36F"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-33620"]}, {"type": "fedora", "idList": ["FEDORA:C4C0D3091C28", "FEDORA:CC54030AE7DD"]}, {"type": "metasploit", "idList": ["MSF:ILITIES/UBUNTU-CVE-2021-31807/"]}, {"type": "nessus", "idList": ["DEBIAN_DLA-2685.NASL", "EULEROS_SA-2021-2519.NASL", "ORACLELINUX_ELSA-2021-9465.NASL"]}, {"type": "oraclelinux", "idList": ["ELSA-2021-9465"]}, {"type": "photon", "idList": ["PHSA-2021-3.0-0269", "PHSA-2021-4.0-0063"]}, {"type": "redhat", "idList": ["RHSA-2021:4292"]}, {"type": "ubuntu", "idList": ["USN-4981-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-33620"]}]}, "exploitation": null, "epss": [{"cve": "CVE-2021-33620", "epss": "0.288680000", "percentile": "0.961650000", "modified": "2023-03-17"}], "vulnersScore": 0.2}, "_state": {"dependencies": 1678307447, "score": 1678307661, "epss": 1679073339}, "_internal": {"score_hash": "67e849033a939198ac7fdbaf4f7e1113"}, "vendorCvss": {"score": "6.5", "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}

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CVE-2021-46784: Fixed DoS when processing gopher server responses.\n (bsc#1200907)\n - CVE-2021-33620: Fixed DoS in HTTP Response processing (bsc#1185923,\n bsc#1186654)\n\n\nPatch Instructions:\n\n To install this SUSE 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 15.3:\n\n zypper in -t patch openSUSE-SLE-15.3-2022-2553=1\n\n - SUSE Manager Server 4.1:\n\n zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.1-2022-2553=1\n\n - SUSE Manager Retail Branch Server 4.1:\n\n zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.1-2022-2553=1\n\n - SUSE Manager Proxy 4.1:\n\n zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.1-2022-2553=1\n\n - SUSE Linux Enterprise Server for SAP 15-SP2:\n\n zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP2-2022-2553=1\n\n - SUSE Linux Enterprise Server for SAP 15-SP1:\n\n zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP1-2022-2553=1\n\n - SUSE Linux Enterprise Server for SAP 15:\n\n zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2022-2553=1\n\n - SUSE Linux Enterprise Server 15-SP2-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-SLES-15-SP2-LTSS-2022-2553=1\n\n - SUSE Linux Enterprise Server 15-SP2-BCL:\n\n zypper in -t patch SUSE-SLE-Product-SLES-15-SP2-BCL-2022-2553=1\n\n - SUSE Linux Enterprise Server 15-SP1-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-LTSS-2022-2553=1\n\n - SUSE Linux Enterprise Server 15-SP1-BCL:\n\n zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-BCL-2022-2553=1\n\n - SUSE Linux Enterprise Server 15-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-SLES-15-2022-2553=1\n\n - SUSE Linux Enterprise Module for Server Applications 15-SP3:\n\n zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP3-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-SP2-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-SP2-LTSS-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-SP2-ESPOS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-SP2-ESPOS-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-LTSS-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-ESPOS-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-LTSS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-2022-2553=1\n\n - SUSE Linux Enterprise High Performance Computing 15-ESPOS:\n\n zypper in -t patch SUSE-SLE-Product-HPC-15-2022-2553=1\n\n - SUSE Enterprise Storage 7:\n\n zypper in -t patch SUSE-Storage-7-2022-2553=1\n\n - SUSE Enterprise Storage 6:\n\n zypper in -t patch SUSE-Storage-6-2022-2553=1\n\n - SUSE CaaS Platform 4.0:\n\n To install this update, use the SUSE CaaS Platform 'skuba' tool. It\n will inform you if it detects new updates and let you then trigger\n updating of the complete cluster in a controlled way.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2022-07-26T00:00:00", "type": "suse", "title": "Security update for squid (important)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 4.0, "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-33620", "CVE-2021-46784"], "modified": "2022-07-26T00:00:00", "id": "SUSE-SU-2022:2553-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/M2J5I4SMKZ66BAR36QD4HWFIOUHNJQEY/", "cvss": {"score": 4.0, "vector": "AV:N/AC:L/Au:S/C:N/I:N/A:P"}}], "oraclelinux": [{"lastseen": "2021-09-24T22:25:49", "description": "[7:3.5.20-17.0.1]\n- Mutiple CVE fixes for squid [Orabug: 33146289]\n- Resolves: CVE-2021-28651 squid: Bug 5104: Memory leak in RFC 2169 response parsing (#778)\n- Resolves: CVE-2021-28652 squid: Bug 5106: Broken cache manager URL parsing (#788)\n- Resolves: CVE-2021-31806,31807,31808 squid: Handle more Range requests (#790)\n- Resolves: CVE-2021-33620 squid: Handle more partial responses (#791)", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-09-24T00:00:00", "type": "oraclelinux", "title": "squid security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-09-24T00:00:00", "id": "ELSA-2021-9465", "href": "http://linux.oracle.com/errata/ELSA-2021-9465.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-07-12T18:39:49", "description": "libecap\nsquid\n[7:4.15-1]\n- new version 4.15\n- Resolves: #1964384 - squid:4 rebase to 4.15\n[7:4.11-5]\n- Resolves: #1944261 - CVE-2020-25097 squid:4/squid: improper input validation\n may allow a trusted client to perform HTTP Request Smuggling", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-16T00:00:00", "type": "oraclelinux", "title": "squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-16T00:00:00", "id": "ELSA-2021-4292", "href": "http://linux.oracle.com/errata/ELSA-2021-4292.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "osv": [{"lastseen": "2022-08-05T05:19:09", "description": "\nSeveral vulnerabilities were discovered in Squid, a proxy caching\nserver.\n\n\n* [CVE-2021-28651](https://security-tracker.debian.org/tracker/CVE-2021-28651)\nDue to a buffer-management bug, it allows a denial of service.\n When resolving a request with the urn: scheme, the parser leaks a\n small amount of memory. However, there is an unspecified attack\n methodology that can easily trigger a large amount of memory\n consumption.\n* [CVE-2021-28652](https://security-tracker.debian.org/tracker/CVE-2021-28652)\nDue to incorrect parser validation, it allows a Denial of Service\n attack against the Cache Manager API. This allows a trusted client\n to trigger memory leaks that. over time, lead to a Denial of\n Service via an unspecified short query string. This attack is\n limited to clients with Cache Manager API access privilege.\n* [CVE-2021-31806](https://security-tracker.debian.org/tracker/CVE-2021-31806)\nDue to a memory-management bug, it is vulnerable to a Denial of\n Service attack (against all clients using the proxy) via HTTP\n Range request processing.\n* [CVE-2021-31807](https://security-tracker.debian.org/tracker/CVE-2021-31807)\nAn integer overflow problem allows a remote server to achieve\n Denial of Service when delivering responses to HTTP Range\n requests. The issue trigger is a header that can be expected to\n exist in HTTP traffic without any malicious intent.\n* [CVE-2021-31808](https://security-tracker.debian.org/tracker/CVE-2021-31808)\nDue to an input-validation bug, it is vulnerable to a Denial of\n Service attack (against all clients using the proxy). A client\n sends an HTTP Range request to trigger this.\n* [CVE-2021-33620](https://security-tracker.debian.org/tracker/CVE-2021-33620)\nRemote servers to cause a denial of service (affecting\n availability to all clients) via an HTTP response. The issue\n trigger is a header that can be expected to exist in HTTP traffic\n without any malicious intent by the server.\n\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u7.\n\n\nWe recommend that you upgrade your squid3 packages.\n\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\n<https://security-tracker.debian.org/tracker/squid3>\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-28T00:00:00", "type": "osv", "title": "squid3 - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31806", "CVE-2021-31808", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31807", "CVE-2021-33620"], "modified": "2022-08-05T05:19:08", "id": "OSV:DLA-2685-1", "href": "https://osv.dev/vulnerability/DLA-2685-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-08-10T07:20:11", "description": "\nMultiple denial of service vulnerabilities were discovered in the Squid\nproxy caching server.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 4.6-1+deb10u6.\n\n\nWe recommend that you upgrade your squid packages.\n\n\nFor the detailed security status of squid please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/squid](https://security-tracker.debian.org/tracker/squid)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-01T00:00:00", "type": "osv", "title": "squid - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-31806", "CVE-2021-31808", "CVE-2021-28651", "CVE-2021-28662", "CVE-2021-28652", "CVE-2021-31807", "CVE-2021-33620"], "modified": "2022-08-10T07:20:04", "id": "OSV:DSA-4924-1", "href": "https://osv.dev/vulnerability/DSA-4924-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "debian": [{"lastseen": "2022-01-04T14:41:02", "description": "- -------------------------------------------------------------------------\nDebian LTS Advisory DLA-2685-1 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Abhijith PA\nJune 14, 2021 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : squid3\nVersion : 3.5.23-5+deb9u7\nCVE ID : CVE-2021-28651 CVE-2021-28652 CVE-2021-31806 CVE-2021-31807 \n CVE-2021-31808 CVE-2021-33620\n\nSeveral vulnerabilities were discovered in Squid, a proxy caching \nserver. \n\nCVE-2021-28651\n\n Due to a buffer-management bug, it allows a denial of service. \n When resolving a request with the urn: scheme, the parser leaks a \n small amount of memory. However, there is an unspecified attack \n methodology that can easily trigger a large amount of memory \n consumption.\n\nCVE-2021-28652\n\n Due to incorrect parser validation, it allows a Denial of Service \n attack against the Cache Manager API. This allows a trusted client \n to trigger memory leaks that. over time, lead to a Denial of \n Service via an unspecified short query string. This attack is \n limited to clients with Cache Manager API access privilege.\n\nCVE-2021-31806\n\n Due to a memory-management bug, it is vulnerable to a Denial of \n Service attack (against all clients using the proxy) via HTTP \n Range request processing.\n\nCVE-2021-31807\n\n An integer overflow problem allows a remote server to achieve \n Denial of Service when delivering responses to HTTP Range \n requests. The issue trigger is a header that can be expected to \n exist in HTTP traffic without any malicious intent.\n\nCVE-2021-31808\n\n Due to an input-validation bug, it is vulnerable to a Denial of \n Service attack (against all clients using the proxy). A client \n sends an HTTP Range request to trigger this.\n\nCVE-2021-33620\n\n Remote servers to cause a denial of service (affecting \n availability to all clients) via an HTTP response. The issue \n trigger is a header that can be expected to exist in HTTP traffic \n without any malicious intent by the server.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.5.23-5+deb9u7.\n\nWe recommend that you upgrade your squid3 packages.\n\nFor the detailed security status of squid3 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/squid3\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-14T06:36:59", "type": "debian", "title": "[SECURITY] [DLA 2685-1] squid3 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-14T06:36:59", "id": "DEBIAN:DLA-2685-1:9A36F", "href": "https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "ubuntu": [{"lastseen": "2023-01-26T15:21:49", "description": "## Releases\n\n * Ubuntu 21.04 \n * Ubuntu 20.10 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 LTS\n\n## Packages\n\n * squid \\- Web proxy cache server\n * squid3 \\- Web proxy cache server\n\nJoshua Rogers discovered that Squid incorrectly handled requests with the \nurn: scheme. A remote attacker could possibly use this issue to cause \nSquid to consume resources, leading to a denial of service. \n(CVE-2021-28651)\n\nJoshua Rogers discovered that Squid incorrectly handled requests to the \nCache Manager API. A remote attacker with access privileges could possibly \nuse this issue to cause Squid to consume resources, leading to a denial of \nservice. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10, \nand Ubuntu 21.04. (CVE-2021-28652)\n\nJoshua Rogers discovered that Squid incorrectly handled certain response \nheaders. A remote attacker could possibly use this issue to cause Squid to \ncrash, resulting in a denial of service. This issue was only affected \nUbuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-28662)\n\nJoshua Rogers discovered that Squid incorrectly handled range request \nprocessing. A remote attacker could possibly use this issue to cause Squid \nto crash, resulting in a denial of service. (CVE-2021-31806, \nCVE-2021-31807, CVE-2021-31808)\n\nJoshua Rogers discovered that Squid incorrectly handled certain HTTP \nresponses. A remote attacker could possibly use this issue to cause Squid \nto crash, resulting in a denial of service. (CVE-2021-33620)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-06-03T00:00:00", "type": "ubuntu", "title": "Squid vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-03T00:00:00", "id": "USN-4981-1", "href": "https://ubuntu.com/security/notices/USN-4981-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "photon": [{"lastseen": "2023-03-16T05:33:51", "description": "Updates of ['containerd', 'squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-3.0-0269", "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-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-32760", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-3.0-0269", "href": "https://github.com/vmware/photon/wiki/Security-Update-3.0-269", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-12T18:41:43", "description": "Updates of ['containerd', 'squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-0269", "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-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-32760", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-0269", "href": "https://github.com/vmware/photon/wiki/Security-Update-3.0-269", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-12T18:55:44", "description": "Updates of ['squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-19T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-0063", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-07-19T00:00:00", "id": "PHSA-2021-0063", "href": "https://github.com/vmware/photon/wiki/Security-Update-4.0-63", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-02-10T03:18:09", "description": "Updates of ['squid'] packages of Photon OS have been released.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-07-20T00:00:00", "type": "photon", "title": "Important Photon OS Security Update - PHSA-2021-4.0-0063", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-07-20T00:00:00", "id": "PHSA-2021-4.0-0063", "href": "https://github.com/vmware/photon/wiki/Security-Update-4.0-63", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "redhat": [{"lastseen": "2021-11-22T18:42:10", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "redhat", "title": "(RHSA-2021:4292) Moderate: squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T14:10:11", "id": "RHSA-2021:4292", "href": "https://access.redhat.com/errata/RHSA-2021:4292", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "almalinux": [{"lastseen": "2022-09-14T18:10:37", "description": "Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "almalinux", "title": "Moderate: squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T13:01:13", "id": "ALSA-2021:4292", "href": "https://errata.almalinux.org/8/ALSA-2021-4292.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "rocky": [{"lastseen": "2023-02-02T17:11:25", "description": "An update is available for squid, libecap.\nThis update affects Rocky Linux 8.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list\nSquid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nThe following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)\n\nSecurity Fix(es):\n\n* squid: denial of service in URN processing (CVE-2021-28651)\n\n* squid: denial of service issue in Cache Manager (CVE-2021-28652)\n\n* squid: denial of service in HTTP response processing (CVE-2021-28662)\n\n* squid: improper input validation in HTTP Range header (CVE-2021-31806)\n\n* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)\n\n* squid: integer overflow in HTTP Range header (CVE-2021-31808)\n\n* squid: denial of service in HTTP response processing (CVE-2021-33620)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T08:56:14", "type": "rocky", "title": "squid:4 security, bug fix, and enhancement update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-11-09T08:56:14", "id": "RLSA-2021:4292", "href": "https://errata.rockylinux.org/RLSA-2021:4292", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "amazon": [{"lastseen": "2023-02-23T15:49:01", "description": "**Issue Overview:**\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent. (CVE-2021-31807)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)\n\nSquid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)\n\nA flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. (CVE-2022-41317)\n\n \n**Affected Packages:** \n\n\nsquid\n\n \n**Issue Correction:** \nRun _yum update squid_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n i686: \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.44.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.i686 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.44.amzn1.i686 \n \n src: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.src \n \n x86_64: \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.44.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.44.amzn1.x86_64 \n \u00a0\u00a0\u00a0 squid-3.5.20-17.44.amzn1.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2021-28651](<https://access.redhat.com/security/cve/CVE-2021-28651>), [CVE-2021-28652](<https://access.redhat.com/security/cve/CVE-2021-28652>), [CVE-2021-31806](<https://access.redhat.com/security/cve/CVE-2021-31806>), [CVE-2021-31807](<https://access.redhat.com/security/cve/CVE-2021-31807>), [CVE-2021-31808](<https://access.redhat.com/security/cve/CVE-2021-31808>), [CVE-2021-33620](<https://access.redhat.com/security/cve/CVE-2021-33620>), [CVE-2022-41317](<https://access.redhat.com/security/cve/CVE-2022-41317>)\n\nMitre: [CVE-2021-28651](<https://vulners.com/cve/CVE-2021-28651>), [CVE-2021-28652](<https://vulners.com/cve/CVE-2021-28652>), [CVE-2021-31806](<https://vulners.com/cve/CVE-2021-31806>), [CVE-2021-31807](<https://vulners.com/cve/CVE-2021-31807>), [CVE-2021-31808](<https://vulners.com/cve/CVE-2021-31808>), [CVE-2021-33620](<https://vulners.com/cve/CVE-2021-33620>), [CVE-2022-41317](<https://vulners.com/cve/CVE-2022-41317>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2023-02-17T00:02:00", "type": "amazon", "title": "Medium: squid", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620", "CVE-2022-41317"], "modified": "2023-02-23T01:35:00", "id": "ALAS-2023-1687", "href": "https://alas.aws.amazon.com/ALAS-2023-1687.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-02-22T23:10:32", "description": "**Issue Overview:**\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent. (CVE-2021-31807)\n\nAn issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this. (CVE-2021-31808)\n\nSquid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server. (CVE-2021-33620)\n\nA flaw was found in squid. A trusted client can directly access the cache manager information, bypassing the manager ACL protection and resulting in information disclosure. (CVE-2022-41317)\n\n \n**Affected Packages:** \n\n\nsquid\n\n \n**Issue Correction:** \nRun _yum update squid_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n aarch64: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.aarch64 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.aarch64 \n \n i686: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.i686 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.i686 \n \n src: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.src \n \n x86_64: \n \u00a0\u00a0\u00a0 squid-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-sysvinit-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-migration-script-3.5.20-17.amzn2.7.2.x86_64 \n \u00a0\u00a0\u00a0 squid-debuginfo-3.5.20-17.amzn2.7.2.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2021-28651](<https://access.redhat.com/security/cve/CVE-2021-28651>), [CVE-2021-28652](<https://access.redhat.com/security/cve/CVE-2021-28652>), [CVE-2021-31806](<https://access.redhat.com/security/cve/CVE-2021-31806>), [CVE-2021-31807](<https://access.redhat.com/security/cve/CVE-2021-31807>), [CVE-2021-31808](<https://access.redhat.com/security/cve/CVE-2021-31808>), [CVE-2021-33620](<https://access.redhat.com/security/cve/CVE-2021-33620>), [CVE-2022-41317](<https://access.redhat.com/security/cve/CVE-2022-41317>)\n\nMitre: [CVE-2021-28651](<https://vulners.com/cve/CVE-2021-28651>), [CVE-2021-28652](<https://vulners.com/cve/CVE-2021-28652>), [CVE-2021-31806](<https://vulners.com/cve/CVE-2021-31806>), [CVE-2021-31807](<https://vulners.com/cve/CVE-2021-31807>), [CVE-2021-31808](<https://vulners.com/cve/CVE-2021-31808>), [CVE-2021-33620](<https://vulners.com/cve/CVE-2021-33620>), [CVE-2022-41317](<https://vulners.com/cve/CVE-2022-41317>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2023-02-17T00:11:00", "type": "amazon", "title": "Medium: squid", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28651", "CVE-2021-28652", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620", "CVE-2022-41317"], "modified": "2023-02-22T01:52:00", "id": "ALAS2-2023-1950", "href": "https://alas.aws.amazon.com/AL2/ALAS-2023-1950.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "fedora": [{"lastseen": "2021-07-28T14:46:52", "description": "Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-11T01:16:02", "type": "fedora", "title": "[SECURITY] Fedora 34 Update: squid-5.0.6-1.fc34", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-11T01:16:02", "id": "FEDORA:CC54030AE7DD", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2021-07-28T14:46:52", "description": "Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-06-11T01:20:16", "type": "fedora", "title": "[SECURITY] Fedora 33 Update: squid-4.15-1.fc33", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-28116", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-11T01:20:16", "id": "FEDORA:C4C0D3091C28", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "mageia": [{"lastseen": "2022-04-18T11:19:35", "description": "Updated squid packages fix security vulnerabilities: Due to improper input validation Squid is vulnerable to an HTTP Request Smuggling attack. This problem allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by Squid security controls (CVE-2020-25097). Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to causeSquid to consume resources, leading to a denial of service (CVE-2021-28651). Joshua Rogers discovered that Squid incorrectly handled requests to the Cache Manager API. A remote attacker with access privileges could possibly use this issue to cause Squid to consume resources, leading to a denial of service (CVE-2021-28652). Joshua Rogers discovered that Squid incorrectly handled certain response headers. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-28662). Joshua Rogers discovered that Squid incorrectly handled range request processing. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-31806, CVE-2021-31807, CVE-2021-31808). Joshua Rogers discovered that Squid incorrectly handled certain HTTP responses. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service (CVE-2021-33620). The squid package has been updated to version 4.15, fixing theese issues and other bugs. \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "CHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.6, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 4.0}, "published": "2021-06-08T16:46:03", "type": "mageia", "title": "Updated squid packages fix security vulnerabilities\n", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-25097", "CVE-2021-28651", "CVE-2021-28652", "CVE-2021-28662", "CVE-2021-31806", "CVE-2021-31807", "CVE-2021-31808", "CVE-2021-33620"], "modified": "2021-06-08T16:46:03", "id": "MGASA-2021-0237", "href": "https://advisories.mageia.org/MGASA-2021-0237.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:P/I:N/A:N"}}]}