Link Following Affecting systemd-resolved package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-RHEL7-SYSTEMDRESOLVED-1381385
  • published26 Jul 2021
  • disclosed25 Jan 2018

Introduced: 25 Jan 2018

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

How to fix?

There is no fixed version for RHEL:7 systemd-resolved.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-resolved package and not the systemd-resolved package as distributed by RHEL. See How to fix? for RHEL:7 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 Scores

version 3.1