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Gentoo Linux Security Advisory                           GLSA 200712-16
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Exiv2: Integer overflow
      Date: December 29, 2007
      Bugs: #202351
        ID: 200712-16

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Synopsis
========

An integer overflow vulnerability in Exiv2 possibly allows for the
execution of arbitrary code.

Background
==========

Exiv2 is a C++ library and set of tools for parsing, editing and saving
Exif and IPTC metadata from images. Exif, the Exchangeable image file
format, specifies the addition of metadata tags to JPEG, TIFF and RIFF
files.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-gfx/exiv2      < 0.13-r1                         >= 0.13-r1

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

Meder Kydyraliev (Google Security) discovered an integer overflow
vulnerability in the JpegThumbnail::setDataArea() method leading to a
heap-based buffer overflow.

Impact
======

An attacker could entice the user of an application making use of Exiv2
or an application included in Exiv2 to load an image file with
specially crafted Exif tags, possibly resulting in the execution of
arbitrary code with the privileges of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Exiv2 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/exiv2-0.13-r1"

References
==========

  [ 1 ] CVE-2007-6353
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6353

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

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

  http://security.gentoo.org/glsa/glsa-200712-16.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@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
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