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To: gentoo-announce@g.o
From: Raphael Marichez <falco@g.o>
Subject: [ GLSA 200710-27 ] ImageMagick: Multiple vulnerabilities
Date: Thu, 25 Oct 2007 00:17:09 +0200
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Gentoo Linux Security Advisory                           GLSA 200710-27
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: ImageMagick: Multiple vulnerabilities
      Date: October 24, 2007
      Bugs: #186030
        ID: 200710-27

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Synopsis
========

Multiple vulnerabilities have been discovered in ImageMagick, possibly
resulting in arbitrary code execution or a Denial of Service.

Background
==========

ImageMagick is a collection of tools and libraries for manipulating
various image formats.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  media-gfx/imagemagick     < 6.3.5.10                  >= 6.3.5.10

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

regenrecht reported multiple infinite loops in functions ReadDCMImage()
and ReadXCFImage() (CVE-2007-4985), multiple integer overflows when
handling certain types of images (CVE-2007-4986, CVE-2007-4988), and an
off-by-one error in the ReadBlobString() function (CVE-2007-4987).

Impact
======

A remote attacker could entice a user to open a specially crafted
image, possibly resulting in the remote execution of arbitrary code
with the privileges of the user running the application, or an
excessive CPU consumption. Note that applications relying on
ImageMagick to process images can also trigger the vulnerability.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ImageMagick users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/imagemagick-6.3.5.10"

References
==========

  [ 1 ] CVE-2007-4985
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4985
  [ 2 ] CVE-2007-4986
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4986
  [ 3 ] CVE-2007-4987
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4987
  [ 4 ] CVE-2007-4988
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4988

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

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

  http://security.gentoo.org/glsa/glsa-200710-27.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@g.o 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
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