[ GLSA 200811-04 ] Graphviz: User-assisted execution of arbitrary code

[Tobias Heinlein <keytoaster () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200811-04
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Graphviz: User-assisted execution of arbitrary code
      Date: November 09, 2008
      Bugs: #240636
        ID: 200811-04

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Synopsis
========

A buffer overflow in Graphviz might lead to user-assisted execution of
arbitrary code via a DOT file.

Background
==========

Graphviz is an open source graph visualization software.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  media-gfx/graphviz      < 2.20.3                        >= 2.20.3

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

Roee Hay reported a stack-based buffer overflow in the push_subg()
function in parser.y when processing a DOT file with a large number of
Agraph_t elements.

Impact
======

A remote attacker could entice a user or automated system to open a
specially crafted DOT file in an application using Graphviz, possibly
leading to the execution of arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Graphviz users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/graphviz-2.20.3"

References
==========

  [ 1 ] CVE-2008-4555
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4555

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

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

  http://security.gentoo.org/glsa/glsa-200811-04.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 2008 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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