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Gentoo Linux Security Advisory                           GLSA 200901-04
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  Severity: Normal
     Title: D-Bus: Denial of Service
      Date: January 11, 2009
      Bugs: #240308
        ID: 200901-04

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Synopsis
========

An error condition can cause D-Bus to crash.

Background
==========

D-Bus is a daemon providing a framework for applications to communicate
with one another.

Affected packages
=================

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  sys-apps/dbus     < 1.2.3-r1                          >= 1.2.3-r1

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

schelte reported that the dbus_signature_validate() function can
trigger a failed assertion when processing a message containing a
malformed signature.

Impact
======

A local user could send a specially crafted message to the D-Bus
daemon, leading to a Denial of Service.

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-1.2.3-r1"

References
==========

  [ 1 ] CVE-2008-3834
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3834

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

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

  http://security.gentoo.org/glsa/glsa-200901-04.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
http://bugs.gentoo.org.

License
=======

Copyright 2009 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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