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TUCoPS :: Linux :: Gentoo :: va2263.htm

D-Bus: Denial of Service



D-Bus: Denial of Service
D-Bus: Denial of Service



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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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