[ GLSA 200501-37 ] GraphicsMagick: PSD decoding heap overflow

[Thierry Carrez]

This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enigBC0428294EFB00E5400AF564
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200501-37
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: GraphicsMagick: PSD decoding heap overflow
Date: January 26, 2005
Bugs: #79336
ID: 200501-37

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

GraphicsMagick is vulnerable to a heap overflow when decoding Photoshop
Document (PSD) files, which could lead to arbitrary code execution.

Background
==========

GraphicsMagick is a collection of tools to read, write and manipulate
images in many formats. GraphicsMagick is originally derived from
ImageMagick 5.5.2.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/graphicsmagick < 1.1.5 >= 1.1.5

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

Andrei Nigmatulin discovered that handling a Photoshop Document (PSD)
file with more than 24 layers in ImageMagick could trigger a heap
overflow (GLSA 200501-26). GraphicsMagick is based on the same code and
therefore suffers from the same flaw.

Impact
======

An attacker could potentially design a malicious PSD image file to
cause arbitrary code execution with the permissions of the user running
GraphicsMagick.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GraphicsMagick users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/graphicsmagick-1.1.5"

References
==========

[ 1 ] CAN-2005-0005
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0005
[ 2 ] GLSA 200501-26
http://www.gentoo.org/security/en/glsa/glsa-200501-26.xml

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

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

http://security.gentoo.org/glsa/glsa-200501-37.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 2005 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/2.0


--------------enigBC0428294EFB00E5400AF564
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.6 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFB9/49vcL1obalX08RAhvsAJ9e+h4V5K+rvISb1XH/yffMx/IungCfaCNW
rsD+AWVUtJZUlFBAJg2Xp+Y=
=DT3u
-----END PGP SIGNATURE-----

--------------enigBC0428294EFB00E5400AF564--