USN-3816-2

Advisory lineage Upstream: 2 Downstream: 0
Published: 19 Nov 2018, 22:03
Last modified:22 Apr 2026, 09:51

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Nov 2018, 22:03
Published
Vulnerability first disclosed
22 Apr 2026, 09:51
Last Modified
Vulnerability information updated

Description

systemd vulnerability USN-3816-1 fixed several vulnerabilities in systemd. However, the fix for CVE-2018-6954 was not sufficient. This update provides the remaining fixes. We apologize for the inconvenience. Original advisory details: Jann Horn discovered that unit_deserialize incorrectly handled status messages above a certain length. A local attacker could potentially exploit this via NotifyAccess to inject arbitrary state across re-execution and obtain root privileges. (CVE-2018-15686) Jann Horn discovered a race condition in chown_one(). A local attacker could potentially exploit this by setting arbitrary permissions on certain files to obtain root privileges. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-15687) It was discovered that systemd-tmpfiles mishandled symlinks in non-terminal path components. A local attacker could potentially exploit this by gaining ownership of certain files to obtain root privileges. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-6954)

Affected Systems

  • ubuntu•systemd

    < 229-4ubuntu21.9 | < 237-3ubuntu10.9

References (2)