GLSA 202003-20: systemd: Heap use-after-free

http://security.gentoo.org/

Severity:	high
Title:	systemd: Heap use-after-free
Date:	03/15/2020
Bugs:	#708806
ID:	202003-20

Synopsis

A heap use-after-free flaw in systemd at worst might allow an attacker to execute arbitrary code.

Background

A system and service manager.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/systemd	< 244.3	>= 244.3	All supported architectures

Description

It was found that systemd incorrectly handled certain Polkit queries.

Impact

A local unprivileged user, by sending a specially crafted Polkit query, could possibly execute arbitrary code with the privileges of the process, escalate privileges or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All systemd users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/systemd-244.3"

References

CVE-2020-1712

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202003-20.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.