vuln-ubuntu/data/osv/usn/USN-5491-1.json

{
  "schema_version": "1.7.0",
  "id": "USN-5491-1",
  "summary": "squid, squid3 vulnerability",
  "details": "Joshua Rogers discovered that Squid incorrectly handled the Gopher\nprotocol. A remote attacker could possibly use this issue to cause Squid to\ncrash, resulting in a denial of service.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2021-46784"
  ],
  "related": [],
  "published": "2022-06-22T14:03:19Z",
  "modified": "2026-04-27T14:11:28Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "squid3",
        "purl": "pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.13?arch=source&distro=bionic"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.27-1ubuntu1.13"
            }
          ]
        }
      ],
      "versions": [
        "3.5.23-5ubuntu1",
        "3.5.23-5ubuntu2",
        "3.5.27-1ubuntu1",
        "3.5.27-1ubuntu1.1",
        "3.5.27-1ubuntu1.2",
        "3.5.27-1ubuntu1.3",
        "3.5.27-1ubuntu1.4",
        "3.5.27-1ubuntu1.5",
        "3.5.27-1ubuntu1.6",
        "3.5.27-1ubuntu1.7",
        "3.5.27-1ubuntu1.8",
        "3.5.27-1ubuntu1.9",
        "3.5.27-1ubuntu1.10",
        "3.5.27-1ubuntu1.11",
        "3.5.27-1ubuntu1.12"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "squid",
            "binary_version": "3.5.27-1ubuntu1.13"
          },
          {
            "binary_name": "squid-cgi",
            "binary_version": "3.5.27-1ubuntu1.13"
          },
          {
            "binary_name": "squid-common",
            "binary_version": "3.5.27-1ubuntu1.13"
          },
          {
            "binary_name": "squid-purge",
            "binary_version": "3.5.27-1ubuntu1.13"
          },
          {
            "binary_name": "squid3",
            "binary_version": "3.5.27-1ubuntu1.13"
          },
          {
            "binary_name": "squidclient",
            "binary_version": "3.5.27-1ubuntu1.13"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:18.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-46784",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "squid",
        "purl": "pkg:deb/ubuntu/squid@4.10-1ubuntu1.6?arch=source&distro=focal"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.10-1ubuntu1.6"
            }
          ]
        }
      ],
      "versions": [
        "4.8-1ubuntu2",
        "4.8-1ubuntu3",
        "4.9-2ubuntu1",
        "4.9-2ubuntu2",
        "4.9-2ubuntu3",
        "4.9-2ubuntu4",
        "4.10-1ubuntu1",
        "4.10-1ubuntu1.1",
        "4.10-1ubuntu1.2",
        "4.10-1ubuntu1.3",
        "4.10-1ubuntu1.4",
        "4.10-1ubuntu1.5"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "squid",
            "binary_version": "4.10-1ubuntu1.6"
          },
          {
            "binary_name": "squid-cgi",
            "binary_version": "4.10-1ubuntu1.6"
          },
          {
            "binary_name": "squid-common",
            "binary_version": "4.10-1ubuntu1.6"
          },
          {
            "binary_name": "squid-purge",
            "binary_version": "4.10-1ubuntu1.6"
          },
          {
            "binary_name": "squidclient",
            "binary_version": "4.10-1ubuntu1.6"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:20.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-46784",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "squid",
        "purl": "pkg:deb/ubuntu/squid@5.2-1ubuntu4.1?arch=source&distro=jammy"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2-1ubuntu4.1"
            }
          ]
        }
      ],
      "versions": [
        "4.13-10ubuntu5",
        "5.2-1ubuntu1",
        "5.2-1ubuntu3",
        "5.2-1ubuntu4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "squid",
            "binary_version": "5.2-1ubuntu4.1"
          },
          {
            "binary_name": "squid-cgi",
            "binary_version": "5.2-1ubuntu4.1"
          },
          {
            "binary_name": "squid-common",
            "binary_version": "5.2-1ubuntu4.1"
          },
          {
            "binary_name": "squid-openssl",
            "binary_version": "5.2-1ubuntu4.1"
          },
          {
            "binary_name": "squid-purge",
            "binary_version": "5.2-1ubuntu4.1"
          },
          {
            "binary_name": "squidclient",
            "binary_version": "5.2-1ubuntu4.1"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:22.04:LTS",
          "cves": [
            {
              "id": "CVE-2021-46784",
              "severity": [
                {
                  "type": "CVSS_V3",
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5491-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-46784"
    }
  ]
}