full-disclosure - [ GLSA 201006-16 ] GD: User-assisted execution of arbitrary code

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Message-ID: <20100603150108.6ca36abe@mail.a3li.li>
Date: Thu, 3 Jun 2010 15:01:08 +0200
From: Alex Legler <a3li@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 201006-16 ] GD: User-assisted execution of
	arbitrary code

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Gentoo Linux Security Advisory                           GLSA 201006-16
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: GD: User-assisted execution of arbitrary code
      Date: June 03, 2010
      Bugs: #292130
        ID: 201006-16

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Synopsis
========

The GD library is prone to a buffer overflow vulnerability.

Background
==========

GD is a graphic library for fast image creation.

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

    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  media-libs/gd      < 2.0.35-r1                       >= 2.0.35-r1

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

Tomas Hoger reported that the _gdGetColors() function in gd_gd.c does
not properly verify the colorsTotal struct member, possibly leading to
a buffer overflow.

Impact
======

A remote attacker could entice a user to open a specially crafted image
file with a program using the GD library, possibly resulting in the
remote execution of arbitrary code with the privileges of the user
running the application, or a Denial of Service condition.

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-2.0.35-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since November 21, 2009. It is likely that your system is
already no longer affected by this issue.

References
==========

  [ 1 ] CVE-2009-3546
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3546

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

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

  http://security.gentoo.org/glsa/glsa-201006-16.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@...too.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2010 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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