| Name | CVE-2015-5400 |
| Description | Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-286-1, DSA-3327-1 |
| Debian Bugs | 793128 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| squid (PTS) | buster (security), buster, buster (lts) | 4.6-1+deb10u10 | fixed |
| bullseye (security), bullseye | 4.13-10+deb11u3 | fixed |
| bookworm (security), bookworm | 5.7-2+deb12u2 | fixed |
| sid, trixie | 6.12-1 | fixed |
| squid3 (PTS) | jessie, jessie (lts) | 3.5.23-5+deb8u7 | fixed |
| stretch (security) | 3.5.23-5+deb9u7 | fixed |
| stretch (lts), stretch | 3.5.23-5+deb9u10 | fixed |
The information below is based on the following data on fixed versions.
Notes
[wheezy] - squid <no-dsa> (Fix is hard to backport and default configuration is not affected)
[squeeze] - squid <no-dsa> (Fix is hard to backport and default configuration is not affected)
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856.patch (3.5)
http://www.squid-cache.org/Versions/v3/3.4/changesets/squid-3.4-13225.patch (3.4)
http://www.squid-cache.org/Advisories/SQUID-2015_2.txt
https://www.openwall.com/lists/oss-security/2015/07/06/8
In squeeze's squid3 the code is structured differently but the bug still appears to be present.
For squid 2.x all versions are affected, cf. comment by upstream in
https://bugs.debian.org/793128#12