CVE-2018-6553 Information

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.

CVSS Vector

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

Reference

https://lists.debian.org/debian-lts-announce/2018/07/msg00014.html https://security.gentoo.org/glsa/201908-08 https://usn.ubuntu.com/usn/usn-3713-1 https://www.debian.org/security/2018/dsa-4243

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8