CVE-2018-6553

The 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.

• https://lists.debian.org/debian-lts-announce/2018/07/msg00014.htmlIssue Tracking, Mailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201908-08
• https://usn.ubuntu.com/usn/usn-3713-1Third Party Advisory
• https://www.debian.org/security/2018/dsa-4243Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2018/07/msg00014.htmlIssue Tracking, Mailing List, Third Party Advisory
• https://security.gentoo.org/glsa/201908-08
• https://usn.ubuntu.com/usn/usn-3713-1Third Party Advisory
• https://www.debian.org/security/2018/dsa-4243Third Party Advisory

Published

Aug 10, 2018

Last Modified

Jun 17, 2026

Status

Modified

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