Gentoo Archives: gentoo-announce

From: Thomas Deutschmann <whissi@g.o>
To: gentoo-announce@l.g.o
Subject: [gentoo-announce] [ GLSA 202003-20 ] systemd: Heap use-after-free
Date: Sun, 15 Mar 2020 03:28:49
Message-Id: 2b969f88-a73e-d542-00a5-30b693c3bf77@gentoo.org
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Gentoo Linux Security Advisory                           GLSA 202003-20
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                                           https://security.gentoo.org/
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 Severity: High
    Title: systemd: Heap use-after-free
     Date: March 15, 2020
     Bugs: #708806
       ID: 202003-20

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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
    -------------------------------------------------------------------
  1  sys-apps/systemd             < 244.3                    >= 244.3

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
==========

[ 1 ] CVE-2020-1712
      https://nvd.nist.gov/vuln/detail/CVE-2020-1712

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-20

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@g.o or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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