{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-28662", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2024-08-03T21:47:33.054Z", "dateReserved": "2021-03-18T00:00:00", "datePublished": "2021-05-27T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-10-17T04:06:18.298369"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h"}, {"url": "https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e"}, {"url": "http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch"}, {"name": "DSA-4924", "tags": ["vendor-advisory"], "url": "https://www.debian.org/security/2021/dsa-4924"}, {"name": "FEDORA-2021-c0bec55ec7", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"}, {"name": "FEDORA-2021-24af72ff2c", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"}, {"name": "[oss-security] 20231011 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days.", "tags": ["mailing-list"], "url": "http://www.openwall.com/lists/oss-security/2023/10/11/3"}, {"name": "20231016 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days.", "tags": ["mailing-list"], "url": "http://seclists.org/fulldisclosure/2023/Oct/14"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T21:47:33.054Z"}, "title": "CVE Program Container", "references": [{"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h", "tags": ["x_transferred"]}, {"url": "https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e", "tags": ["x_transferred"]}, {"url": "http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch", "tags": ["x_transferred"]}, {"name": "DSA-4924", "tags": ["vendor-advisory", "x_transferred"], "url": "https://www.debian.org/security/2021/dsa-4924"}, {"name": "FEDORA-2021-c0bec55ec7", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"}, {"name": "FEDORA-2021-24af72ff2c", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"}, {"name": "[oss-security] 20231011 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days.", "tags": ["mailing-list", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2023/10/11/3"}, {"name": "20231016 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days.", "tags": ["mailing-list", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2023/Oct/14"}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "matchCriteriaId": "B5A199CF-E7E1-44D4-8A5A-BEA6DFEB35ED", "versionEndExcluding": "4.15", "versionStartIncluding": "4.0.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "matchCriteriaId": "68801A75-0B13-444A-B88F-8BDD4EE953D3", "versionEndExcluding": "5.0.6", "versionStartIncluding": "5.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Squid versiones 4.x anteriores a 4.15 y versiones 5.x anteriores a 5.0.6. Si un servidor remoto env\u00eda un determinado encabezado de respuesta por medio de HTTP o HTTPS, ocurre una denegaci\u00f3n de servicio. Este encabezado puede ocurrir plausiblemente en tr\u00e1fico de red benigno"}], "id": "CVE-2021-28662", "lastModified": "2024-11-21T06:00:03.360", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2021-05-27T12:15:08.263", "references": [{"source": "[email protected]", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2023/Oct/14"}, {"source": "[email protected]", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2023/10/11/3"}, {"source": "[email protected]", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch"}, {"source": "[email protected]", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e"}, {"source": "[email protected]", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h"}, {"source": "[email protected]", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"}, {"source": "[email protected]", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"}, {"source": "[email protected]", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4924"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2023/Oct/14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2023/10/11/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4924"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-116"}], "source": "[email protected]", "type": "Primary"}]}

{"acknowledgement": "Upstream acknowledges Joshua Rogers (Opera Software) as the original reporter.", "affected_release": [{"advisory": "RHSA-2021:4292", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "squid:4-8050020210618131503.b4937e53", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}], "bugzilla": {"description": "squid: denial of service in HTTP response processing", "id": "1962254", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962254"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-20", "details": ["An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.", "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."], "mitigation": {"lang": "en:us", "value": "Mitigation 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."}, "name": "CVE-2021-28662", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "squid", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "squid34", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "squid", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "squid", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-05-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-28662\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-28662\nhttps://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h"], "statement": "The versions of `squid` as shipped with Red Hat Enterprise Linux 6 and 7 are not affected by this flaw, as the vulnerable code was introduced in a later version of the package.", "threat_severity": "Moderate", "upstream_fix": "squid 4.15, squid 5.0.6"}