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squid — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2023-49285

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Products
squid
Affected versions
5.7-2
Fixed versions
5.7-2+deb12u1, 6.5-1
CVEs
CVE-2023-49285
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 16:11 UTC · Revision 1

Source evidence

DEBIAN-CVE-2023-49285

core-osv · Original source

Published 4 Dec 2023, 23:15 UTC

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

osv:DEBIAN-CVE-2023-49285

squid

Fixed versions: 5.7-2+deb12u1

squid

Fixed versions: 6.5-1

squid

Fixed versions: 6.5-1

Complete source record
{
  "id": "46e3be1b81b79c5ce73cccd567560ad948ba31b2f52d91ea7bc77a55d5a349fe",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-49285",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2023-49285",
    "summary": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.",
    "evidence": "osv:DEBIAN-CVE-2023-49285",
    "products": [
      {
        "name": {
          "value": "squid",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.7-2+deb12u1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "5.7-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "squid",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.5-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "squid",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.5-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2023-49285",
      "aliases": [
        "DEBIAN-CVE-2023-49285"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.7-2+deb12u1"
                }
              ]
            }
          ],
          "package": {
            "name": "squid",
            "purl": "pkg:deb/debian/squid?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "5.7-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-49285.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "squid",
            "purl": "pkg:deb/debian/squid?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-49285.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "squid",
            "purl": "pkg:deb/debian/squid?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-49285.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        }
      ],
      "modified": "2026-10-26T18:02:50.014721840Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-49285"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2023-49285"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-49285",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 456947,
  "published_at": "2023-12-04T23:15:27.007+00:00"
}