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[ GLSA 200411-08 ] GD: Integer overflow
From: Thierry Carrez <koon () gentoo org>
Date: Wed, 03 Nov 2004 22:38:50 +0100

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Gentoo Linux Security Advisory                           GLSA 200411-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: GD: Integer overflow
      Date: November 03, 2004
      Bugs: #69070
        ID: 200411-08

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Synopsis
========

The PNG image decoding routines in the GD library contain an integer
overflow that may allow execution of arbitrary code with the rights of
the program decoding a malicious PNG image.

Background
==========

The GD graphics library is an open source library which allows
programmers to easily generate PNG, JPEG, GIF and WBMP images from many
different programming languages.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  media-libs/gd      < 2.0.32                             >= 2.0.32

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

infamous41md found an integer overflow in the memory allocation
procedure of the GD routine that handles loading PNG image files.

Impact
======

A remote attacker could entice a user to load a carefully crafted PNG
image file in a GD-powered application, or send a PNG image to a web
application which uses GD PNG decoding functions. This could
potentially lead to execution of arbitrary code with the rights of the
program loading the image.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GD users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/gd-2.0.32"

References
==========

  [ 1 ] Original BugTraq advisory
        http://www.securityfocus.com/archive/1/379382
  [ 2 ] CAN-2004-0990
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0990

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

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

  http://security.gentoo.org/glsa/glsa-200411-08.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 2004 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/1.0

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