CVE-2018-6553

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.0 8.8/10CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

Vendor	Product	Versions
n/a	cups	>= unspecified, < 2.2.7-1ubuntu2.1
n/a	cups	>= unspecified, < 2.2.4-7ubuntu3.1
n/a	cups	>= unspecified, < 2.1.3-4ubuntu0.5
n/a	cups	>= unspecified, < 1.7.2-0ubuntu1.10

References

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

Timeline

Published: Aug 10, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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