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Gentoo Linux Security Advisory GLSA 201406-27
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http://security.gentoo.org/
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Severity: High
Title: polkit, Spice-Gtk, systemd, HPLIP, libvirt: Privilege
escalation
Date: June 26, 2014
Bugs: #484486, #484488, #485420, #485546, #485904
ID: 201406-27

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Synopsis
========

A race condition in polkit could allow a local attacker to gain
escalated privileges.

Background
==========

polkit is a toolkit for managing policies relating to unprivileged
processes communicating with privileged processes.

Affected packages
=================

——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-print/hplip < 3.14.1 >= 3.14.1
2 net-misc/spice-gtk < 0.21 >= 0.21
3 sys-apps/systemd < 204-r1 >= 204-r1
4 app-emulation/libvirt < 1.1.2-r3 >= 1.1.2-r3
5 sys-auth/polkit < 0.112 >= 0.112
——————————————————————-
5 affected packages

Description
===========

polkit has a race condition which potentially allows a process to
change its UID/EUID via suid or pkexec before authentication is
completed.

Impact
======

A local attacker could start a suid or pkexec process through a
polkit-enabled application, which could result in privilege escalation
or bypass of polkit restrictions.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All polkit users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=sys-auth/polkit-0.112”

All HPLIP users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=net-print/hplip-3.14.1”

All Spice-Gtk users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=net-misc/spice-gtk-0.21”

All systemd users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=sys-apps/systemd-204-r1”

All libvirt users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=app-emulation/libvirt-1.1.2-r3”

References
==========

[ 1 ] CVE-2013-4288
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4288
[ 2 ] CVE-2013-4311
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4311
[ 3 ] CVE-2013-4324
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4324
[ 4 ] CVE-2013-4325
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4325
[ 5 ] CVE-2013-4327
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4327

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

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

http://security.gentoo.org/glsa/glsa-201406-27.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.

License
=======

Copyright 2014 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.

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

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