vulnerability

Debian: CVE-2018-6954: systemd -- security update

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Severity

CVSS

(AV:L/AC:L/Au:N/C:C/I:C/A:C)

Published

Feb 13, 2018

Added

Jul 30, 2024

Modified

Mar 30, 2026

Description

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.

Solution

debian-upgrade-systemd

References

CVE-2018-6954
https://attackerkb.com/topics/CVE-2018-6954
CWE-59
EUVD-EUVD-2018-18698
https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-18698

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