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Gentoo Linux Security Advisory                           GLSA 201308-02
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: D-Bus: Denial of Service
     Date: August 22, 2013
     Bugs: #473190
       ID: 201308-02

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Synopsis
========

A vulnerability has been found in D-Bus which allows a local user to
cause a Denial of Service.

Background
==========

D-Bus is a message bus system which processes can use to talk to each
other.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-apps/dbus                < 1.6.12                  >= 1.6.12

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

D-Bus' _dbus_printf_string_upper_bound() function crashes if it returns
exactly 1024 bytes.

Impact
======

A local attacker could provide specially-crafted input to an
application using D-Bus which would cause
_dbus_printf_string_upper_bound() to return 1024 bytes and crash,
causing a Denial of Service condition.

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-1.6.12"

References
==========

[ 1 ] CVE-2013-2168
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-2168

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

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

 http://security.gentoo.org/glsa/glsa-201308-02.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 2013 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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