CVE-2018-6553
AppArmor cupsd Sandbox Bypass Due to Use of Hard Links
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.2.7-1ubuntu2.1, 2.2.4-7ubuntu3.1, 2.1.3-4ubuntu0.5, 1.7.2-0ubuntu1.10
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- n/a cups
fixed in 2.2.7-1ubuntu2.1
- n/a cups
fixed in 2.2.4-7ubuntu3.1
- n/a cups
fixed in 2.1.3-4ubuntu0.5
- n/a cups
fixed in 1.7.2-0ubuntu1.10