CVE-2019-18677

NameCVE-2019-18677
DescriptionAn issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)buster, buster (security)4.6-1+deb10u1vulnerable
bullseye, sid4.9-2fixed
squid3 (PTS)jessie3.4.8-6+deb8u5vulnerable
jessie (security)3.4.8-6+deb8u8vulnerable
stretch (security), stretch3.5.23-5+deb9u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsource(unstable)4.9-1
squid3source(unstable)(unfixed)

Notes

Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-36492033ea4097821a4f7ff3ddcb971fbd1e8ba0.patch
Squid 3.5: http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-e5f1813a674848dde570f7920873e1071f96e0b4.patch
http://www.squid-cache.org/Advisories/SQUID-2019_9.txt

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