Otkrivena su i ispravljena dva sigurnosna propusta vezana uz ImageMagick koja je udaljeni zlonamjerni korisnik mogao iskoristiti za pokretanje proizvoljnog programskog koda i izvođenje DoS napada.

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Gentoo Linux Security Advisory                           GLSA 201203-09
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: ImageMagick: User-assisted execution of arbitrary code
     Date: March 06, 2012
     Bugs: #402999
       ID: 201203-09

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Synopsis
========

Vulnerabilities found in ImageMagick might allow remote attackers to
execute arbitrary code.

Background
==========

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

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-gfx/imagemagick       < 6.7.5.3                 >= 6.7.5.3

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

Two vulnerabilities have been found in ImageMagick:

* Incorrect offset and count values in the ResolutionUnit tag in EXIF
  IFD could cause memory corruption (CVE-2012-0247).
* IOP tag offsets pointing to the beginning of an IFD could cause an
  infinite loop of ImageMagick parsing the IFD structure
  (CVE-2012-0248).

Impact
======

A remote attacker could entice a user to open a specially crafted
image, possibly resulting in execution of arbitrary code or a Denial of
Service condition.

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-6.7.5.3"

References
==========

[ 1 ] CVE-2012-0247
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0247
[ 2 ] CVE-2012-0248
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0248

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

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

 http://security.gentoo.org/glsa/glsa-201203-09.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
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https://bugs.gentoo.org.

License
=======

Copyright 2012 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