CVE-2018-6553

Name: CVE-2018-6553
Creator: NVD / NIST
Published: 2018-08-10T15:29:01.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.39%

Last modified Jun 17, 2026

CVE-2018-6553 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

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

EPSS Probability

0.39%

30.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cups	Cups	All versions
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

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
Status: Modified

Frequently Asked Questions

What is CVE-2018-6553?

How severe is CVE-2018-6553?

Severity scoring for CVE-2018-6553 is pending analysis. The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6553?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6553?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST