NameCVE-2016-4553 in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs823968

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)wheezy2.7.STABLE9-4.1+deb7u1fixed
wheezy (security)2.7.STABLE9-4.1+deb7u3fixed
squid3 (PTS)wheezy3.1.20-2.2+deb7u4fixed
wheezy (security)3.1.20-2.2+deb7u8fixed
jessie (security)3.4.8-6+deb8u5fixed
stretch (security), stretch3.5.23-5+deb9u1fixed
buster, sid3.5.27-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsource(unstable)(not affected)
squid3sourcewheezy(not affected)


[wheezy] - squid3 <not-affected> (issue introduced by CVE-2009-0801 fix, not applied in wheezy)
- squid <not-affected> (Does not affect 2.x)
Fix for 3.5.x:
Fix for 3.5 relies on SBuf.
Fix for 3.4.x:

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