CVE-2018-6954 — Vulnetix

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CVE-2018-6954 PUBLISHED

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

EPSS 0.13% · 32.4th percentile

Risk Scores

EPSS Score

0.13%

32.4th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:16.04:LTS	systemd	0, 225-1ubuntu9, 227-2ubuntu1
Ubuntu:18.04:LTS	systemd	0, 234-2ubuntu12, 235-2ubuntu3

Timeline

Feb 13, 2018 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Dec 25, 2021 EPSS Score
Feb 25, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score
Nov 1, 2022 EPSS Score
Jan 2, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2018-6954 third-party-advisory
https://ubuntu.com/security/notices/USN-3816-1 vendor-advisory
https://ubuntu.com/security/notices/USN-3816-2 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2018-6954 third-party-advisory

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