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Gentoo Linux Security Advisory                           GLSA 200501-37
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                                            https://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
        https://security.gentoo.org/glsa/200501-26

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

  https://security.gentoo.org/glsa/200501-37

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 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.

https://creativecommons.org/licenses/by-sa/2.0/