CVE-2018-6553

NameCVE-2018-6553
DescriptionThe CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. A local attacker could possibly use this issue to escape confinement. This flaw affects versions prior to 2.2.7-1ubuntu2.1 in Ubuntu 18.04 LTS, prior to 2.2.4-7ubuntu3.1 in Ubuntu 17.10, prior to 2.1.3-4ubuntu0.5 in Ubuntu 16.04 LTS, and prior to 1.7.2-0ubuntu1.10 in Ubuntu 14.04 LTS.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1426-1, DSA-4243-1, ELA-15-1
Debian Bugs903605

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
cups (PTS)jessie, jessie (lts)1.7.5-11+deb8u12fixed
stretch (security)2.2.1-8+deb9u8fixed
stretch (lts), stretch2.2.1-8+deb9u12fixed
buster, buster (lts)2.2.10-6+deb10u11fixed
buster (security)2.2.10-6+deb10u10fixed
bullseye2.3.3op2-3+deb11u8fixed
bullseye (security)2.3.3op2-3+deb11u9fixed
bookworm2.4.2-3+deb12u7fixed
bookworm (security)2.4.2-3+deb12u8fixed
sid, trixie2.4.10-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
cupssourcewheezy1.5.3-5+deb7u9ELA-15-1
cupssourcejessie1.7.5-11+deb8u4DLA-1426-1
cupssourcestretch2.2.1-8+deb9u2DSA-4243-1
cupssource(unstable)2.2.8-5903605
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