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[gentoo-announce] [ GLSA 201406-01 ] D-Bus, GLib: Privilege escalation

Posted on 01 June 2014
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201406-01
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http://security.gentoo.org/
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Severity: High
Title: D-Bus, GLib: Privilege escalation
Date: June 01, 2014
Bugs: #436028
ID: 201406-01

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Synopsis
========
A vulnerability has been found in D-Bus which allows local attackers to
gain escalated privileges.

Background
==========
D-Bus is a daemon providing a framework for applications to communicate
with one another. GLib is a library providing a number of GNOME's core
objects and functions.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/dbus < 1.6.8 >= 1.6.8
2 dev-libs/glib < 2.32.4-r1 >= 2.32.4-r1
-------------------------------------------------------------------
2 affected packages

Description
===========
When libdbus is used in a setuid program, a user can gain escalated
privileges by leveraging the DBUS_SYSTEM_BUS_ADDRESS variable. GLib can
be used in a setuid context with D-Bus, and so can trigger this
vulnerability. Please review the CVE identifier below for more details.

Impact
======
A local attacker could gain escalated privileges and execute arbitrary
code.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All D-Bus users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.6.8"

All GLib users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/glib-2.32.4-r1"

References
==========
[ 1 ] CVE-2012-3524
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3524

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

http://security.gentoo.org/glsa/glsa-201406-01.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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