Description
Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache via an HTTP response splitting attack.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | squid | 2.5.7-6 | — |
| Debian 13 | squid | 2.5.7-6 | — |
| Debian 12 | squid | 2.5.7-6 | — |
| Debian 3.0 | squid | 2.4.6-2woody6 | DSA-667-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | squid | 7:2.5.STABLE6-3.4E.3 | RHSA-2005:060 |
| RHEL 3 | squid | 7:2.5.STABLE3-6.3E.7 | RHSA-2005:061 |
Advisories 3
- RHSA-2005:060 Red Hat Security Advisory: squid security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2005:061 Red Hat Security Advisory: squid security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-667-1 squid - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-response_splitting
- FEDORA-2005-373 vendor-advisory
- FLSA-2006:152809 vendor-advisory
- http://www.squid-cache.org/Advisories/SQUID-2005_5.txt
- VU#625878 third-party-advisory
- oval:org.mitre.oval:def:11605 vdb-entry signature
- 12433 vdb-entry
- RHSA-2005:061 vendor-advisory
- CLA-2005:931 vendor-advisory
- MDKSA-2005:034 vendor-advisory
- DSA-667 vendor-advisory
- 20050207 [USN-77-1] Squid vulnerabilities mailing-list
- SUSE-SA:2005:006 vendor-advisory
- RHSA-2005:060 vendor-advisory