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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
squid-cache squid
< 6.4affected
References
- https://github.com/squid-cache/squid/security/advisories/GHSA-w4gv-vw3f-29g3 ↗
- https://github.com/squid-cache/squid/commit/a27bf4b84da23594150c7a86a23435df0b35b988 ↗
- https://github.com/squid-cache/squid/releases/tag/SQUID_6_4 ↗
- https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html ↗
- http://www.openwall.com/lists/oss-security/2025/11/05/5 ↗