Incorrect Privilege Assignment Affecting systemd package, versions <242-4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.94% (58th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-SYSTEMD-345384
  • published26 Apr 2019
  • disclosed26 Apr 2019

Introduced: 26 Apr 2019

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

How to fix?

Upgrade Debian:unstable systemd to version 242-4 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 Debian. See How to fix? for Debian:unstable 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 Base Scores

version 3.1