[ GLSA 200901-04 ] D-Bus: Denial of Service

[Robert Buchholz <rbu () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200901-04
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                                            http://security.gentoo.org/
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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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