CVE-2025-54574

Name	CVE-2025-54574
Description	Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow and possible remote code execution attack when processing URN due to incorrect buffer management. This has been fixed in version 6.4. To work around this issue, disable URN access permissions.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5982-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
squid (PTS)	bullseye	4.13-10+deb11u3	vulnerable
	bullseye (security)	4.13-10+deb11u4	vulnerable
	bookworm, bookworm (security)	5.7-2+deb12u3	fixed
	trixie	6.13-2	fixed
	forky, sid	7.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
squid	source	bookworm	5.7-2+deb12u3		DSA-5982-1
squid	source	(unstable)	6.5-1

Notes

https://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3
https://github.com/squid-cache/squid/commit/a27bf4b84da23594150c7a86a23435df0b35b988 (SQUID_6_4)
Included in set of fixes for CVE-2023-5824