Description
The clientProcessRequest() function in src/client_side.c in Squid 2.6 before 2.6.STABLE12 allows remote attackers to cause a denial of service (daemon crash) via crafted TRACE requests that trigger an assertion error.
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 | 2.6.5-6 | — |
| Debian 13 | squid | 2.6.5-6 | — |
| Debian 12 | squid | 2.6.5-6 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | squid | 7:2.6.STABLE6-4.el5 | RHSA-2007:0131 |
Advisories 1
- RHSA-2007:0131 Red Hat Security Advisory: squid security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- GLSA-200703-27 vendor-advisory
- ADV-2007-1035 vdb-entry
- http://www.squid-cache.org/Versions/v2/2.6/changesets/11349.patch
- 24611 third-party-advisory
- SUSE-SR:2007:005 vendor-advisory
- 23085 vdb-entry
- 24625 third-party-advisory
- http://www.squid-cache.org/Advisories/SQUID-2007_1.txt
- oval:org.mitre.oval:def:10291 vdb-entry signature
- MDKSA-2007:068 vendor-advisory
- USN-441-1 vendor-advisory
- 1017805 vdb-entry
- 24662 third-party-advisory
- squid-clientprocessrequest-dos(33124) vdb-entry
- 24911 third-party-advisory
- RHSA-2007:0131 vendor-advisory
- 24614 third-party-advisory