CVE-2023-46847

Publication date 3 November 2023

Last updated 4 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
squid	23.10 mantic	Fixed 6.1-2ubuntu1.1
	23.04 lunar	Fixed 5.7-1ubuntu3.1
	22.04 LTS jammy	Fixed 5.7-0ubuntu0.22.04.2
	20.04 LTS focal	Fixed 4.10-1ubuntu1.8
	18.04 LTS bionic	Ignored end of standard support
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support
squid3	23.10 mantic	Not in release
	23.04 lunar	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 3.5.27-1ubuntu1.14+esm1
	16.04 LTS xenial	Fixed 3.5.12-1ubuntu7.16+esm2
	14.04 LTS trusty	Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
squid	Upstream: dc0e10b Upstream: 052cf08

Severity score breakdown

Parameter	Value
Base score	7.5 · High
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