{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2021-33620",
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "dateUpdated": "2024-08-03T23:58:21.468Z",
        "dateReserved": "2021-05-28T00:00:00.000Z",
        "datePublished": "2021-05-28T00:00:00.000Z"
    },
    "containers": {
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                "shortName": "mitre",
                "dateUpdated": "2023-10-17T04:06:14.805Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Squid 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."
                }
            ],
            "affected": [
                {
                    "vendor": "n/a",
                    "product": "n/a",
                    "versions": [
                        {
                            "version": "n/a",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f"
                },
                {
                    "url": "http://www.squid-cache.org/Versions/v5/changesets/squid-5-8af775ed98bfd610f9ce762fe177e01b2675588c.patch"
                },
                {
                    "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3ac9f5e86d6269ec0a8c.patch"
                },
                {
                    "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": "[debian-lts-announce] 20210614 [SECURITY] [DLA 2685-1] squid3 security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html"
                },
                {
                    "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"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:L/S:U/UI:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "text",
                            "lang": "en",
                            "description": "n/a"
                        }
                    ]
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-03T23:58:21.468Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://www.squid-cache.org/Versions/v5/changesets/squid-5-8af775ed98bfd610f9ce762fe177e01b2675588c.patch",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3ac9f5e86d6269ec0a8c.patch",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "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": "[debian-lts-announce] 20210614 [SECURITY] [DLA 2685-1] squid3 security update",
                        "tags": [
                            "mailing-list",
                            "x_transferred"
                        ],
                        "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html"
                    },
                    {
                        "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"
                    }
                ]
            }
        ]
    }
}