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

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200501-37
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: GraphicsMagick: PSD decoding heap overflow
      Date: January 26, 2005
      Bugs: #79336
        ID: 200501-37

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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

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