Incorrect Privilege Assignment Affecting systemd package, versions <0:239-29.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-RHEL8-SYSTEMD-3743373
  • published26 Jul 2021
  • disclosed25 Apr 2019

Introduced: 25 Apr 2019

CVE-2019-3843  (opens in a new tab)
CWE-266  (opens in a new tab)

How to fix?

Upgrade RHEL:8 systemd to version 0:239-29.el8 or higher.
This issue was patched in RHSA-2020:1794.

NVD Description

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

It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

CVSS Scores

version 3.1