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CVE-2023-49286

Published: 4 December 2023

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
squid
Launchpad, Ubuntu, Debian
bionic Ignored
(end of standard support)
focal
Released (4.10-1ubuntu1.9)
jammy
Released (5.7-0ubuntu0.22.04.3)
lunar
Released (5.7-1ubuntu3.2)
mantic
Released (6.1-2ubuntu1.2)
noble
Released (6.5-1ubuntu1)
trusty Ignored
(end of standard support)
upstream
Released (6.5-1)
xenial Ignored
(end of standard support)
Patches:
upstream: https://github.com/squid-cache/squid/commit/6014c6648a2a54a4ecb7f952ea1163e0798f9264
upstream: http://www.squid-cache.org/Versions/v6/SQUID-2023_8.patch
squid3
Launchpad, Ubuntu, Debian
bionic
Released (3.5.27-1ubuntu1.14+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal Does not exist

jammy Does not exist

lunar Does not exist

mantic Does not exist

noble Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial
Released (3.5.12-1ubuntu7.16+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H