Link Following Affecting systemd package, versions <238-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.53% (42nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-SYSTEMD-18867285
  • published17 Aug 2026
  • disclosed13 Feb 2018

Introduced: 13 Feb 2018

CVE-2018-6954  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Echo:latest systemd to version 238-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1