Incorrect Privilege Assignment Affecting systemd package, versions <237-3ubuntu10.38


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.94% (58th percentile)

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  • Snyk IDSNYK-UBUNTU1804-SYSTEMD-345433
  • 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 Ubuntu:18.04 systemd to version 237-3ubuntu10.38 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 Ubuntu. See How to fix? for Ubuntu:18.04 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