GLSA 201406-01: D-Bus, GLib: Privilege escalation

http://security.gentoo.org/

Severity:	high
Title:	D-Bus, GLib: Privilege escalation
Date:	06/01/2014
Bugs:	#436028
ID:	201406-01

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 GNOMEâ€™s core objects and functions.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/dbus	< 1.6.8	>= 1.6.8	All supported architectures
dev-libs/glib	< 2.32.4-r1	>= 2.32.4-r1	All supported architectures

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

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.