vulnerability

Red Hat OpenShift: CVE-2019-3843: systemd: services with DynamicUser can create SUID/SGID binaries

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Apr 26, 2019
Added
Dec 29, 2020
Modified
Mar 30, 2026

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.

Solution

linuxrpm-upgrade-redhat-coreos
Title
Rapid7 Labs

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