CVE-2019-12523

NameCVE-2019-12523
DescriptionAn issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2278-1, DSA-4682-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)buster4.6-1+deb10u7fixed
buster (security)4.6-1+deb10u10fixed
bullseye4.13-10+deb11u2fixed
bullseye (security)4.13-10+deb11u3fixed
bookworm5.7-2fixed
bookworm (security)5.7-2+deb12u1fixed
trixie6.6-1fixed
sid6.8-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsourcebuster4.6-1+deb10u2DSA-4682-1
squidsource(unstable)4.9-1
squid3sourcestretch3.5.23-5+deb9u2DLA-2278-1
squid3source(unstable)(unfixed)

Notes

http://www.squid-cache.org/Advisories/SQUID-2019_8.txt
Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch

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