CVE Database›Document archive›CVE-2019-3843

CVE-2019-3843

systemd: services with DynamicUser can create SUID/SGID binaries

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Severity

Moderate

Red Hat Product Security

4.5

CVSS 3.0

Review impact separately from score.

Published · April 25, 2019

Updated · November 22, 2025

Description

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.

Statement

This issue did not affect the versions of systemd as shipped with Red Hat Enterprise Linux 7 as they did not include support for DynamicUser property.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.5
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CWE-266 · Incorrect Privilege Assignment