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Date: Wed, 20 Dec 2006 21:21:40 +0100
From: Raphael Marichez <falco@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200612-20 ] imlib2: Multiple
	vulnerabilities

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Gentoo Linux Security Advisory                           GLSA 200612-20
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: imlib2: Multiple vulnerabilities
      Date: December 20, 2006
      Bugs: #154216
        ID: 200612-20

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Synopsis
========

imlib2 contains several vulnerabilities that could lead to the remote
execution of arbitrary code or a Denial of Service.

Background
==========

imlib2 is an advanced replacement for image manipulation libraries such
as libXpm. It is utilized by numerous programs, including gkrellm and
several window managers, to display images.

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

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  media-libs/imlib2       < 1.3.0                          >= 1.3.0

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

M. Joonas Pihlaja discovered several buffer overflows in loader_argb.c,
loader_png.c, loader_lbm.c, loader_jpeg.c, loader_tiff.c, loader_tga.c,
loader_pnm.c and an out-of-bounds memory read access in loader_tga.c.

Impact
======

An attacker can entice a user to process a specially crafted JPG, ARGB,
PNG, LBM, PNM, TIFF, or TGA image with an "imlib2*" binary or another
application using the imlib2 libraries. Successful exploitation of the
buffer overflows causes the execution of arbitrary code with the
permissions of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All imlib2 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/imlib2-1.3.0"

References
==========

  [ 1 ] CVE-2006-4806
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4806
  [ 2 ] CVE-2006-4807
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4807
  [ 3 ] CVE-2006-4808
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4808
  [ 4 ] CVE-2006-4809
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4809

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

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

  http://security.gentoo.org/glsa/glsa-200612-20.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
http://bugs.gentoo.org.

License
=======

Copyright 2006 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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