Incorrect Authorization Affecting systemd-udev package, versions <0:239-45.el8


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.1% (29th percentile)

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  • Snyk IDSNYK-ROCKY8-SYSTEMDUDEV-3295725
  • published3 Feb 2023
  • disclosed9 Apr 2019

Introduced: 9 Apr 2019

CVE-2019-3842  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 systemd-udev to version 0:239-45.el8 or higher.
This issue was patched in RLSA-2021:1611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-udev package and not the systemd-udev package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".

CVSS Base Scores

version 3.1