CVE-2019-3843

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.

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.

Se descubrió que un servicio systemd que utiliza la propiedad DynamicUser puede crear un binario SUID/SGID que podría ejecutarse como servicio transitorio UID/GID incluso después de que el servicio haya terminado. Un atacante local puede utilizar esta vulnerabilidad para acceder a recursos que serán propiedad de un servicio potencialmente diferente en el futuro, cuando el UID/GID sea reciclado.