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Gentoo Linux Security Advisory                           GLSA 200708-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: GD: Multiple vulnerabilities
      Date: August 09, 2007
      Bugs: #179154
        ID: 200708-05

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Synopsis
========

Multiple vulnerabilities have been discovered in GD, allowing for the
execution of arbitrary code.

Background
==========

GD is a graphic library for fast image creation.

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

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

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

Xavier Roche discovered an infinite loop in the gdPngReadData()
function when processing a truncated PNG file (CVE-2007-2756). An
integer overflow has been discovered in the gdImageCreateTrueColor()
function (CVE-2007-3472). An error has been discovered in the function
gdImageCreateXbm() function (CVE-2007-3473). Unspecified
vulnerabilities have been discovered in the GIF reader (CVE-2007-3474).
An error has been discovered when processing a GIF image that has no
global color map (CVE-2007-3475). An array index error has been
discovered in the file gd_gif_in.c when processing images with an
invalid color index (CVE-2007-3476). An error has been discovered in
the imagearc() and imagefilledarc() functions when processing overly
large angle values (CVE-2007-3477). A race condition has been
discovered in the gdImageStringFTEx() function (CVE-2007-3478).

Impact
======

A remote attacker could exploit one of these vulnerabilities to cause a
Denial of Service or possibly execute arbitrary code with the
privileges of the user running GD.

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"

References
==========

  [ 1 ] CVE-2007-2756
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2756
  [ 2 ] CVE-2007-3472
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3472
  [ 3 ] CVE-2007-3473
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3473
  [ 4 ] CVE-2007-3474
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3474
  [ 5 ] CVE-2007-3475
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3475
  [ 6 ] CVE-2007-3476
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3476
  [ 7 ] CVE-2007-3477
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3477
  [ 8 ] CVE-2007-3478
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3478

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

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

  http://security.gentoo.org/glsa/glsa-200708-05.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 2007 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