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Gentoo Linux Security Advisory                           GLSA 200605-17
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  Severity: Normal
     Title: libTIFF: Multiple vulnerabilities
      Date: May 30, 2006
      Bugs: #129675
        ID: 200605-17

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Synopsis
========

Multiple vulnerabilities in libTIFF could lead to the execution of
arbitrary code or a Denial of Service.

Background
==========

libTIFF provides support for reading and manipulating TIFF images.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-libs/tiff       < 3.8.1                            >= 3.8.1

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

Multiple vulnerabilities, ranging from integer overflows and NULL
pointer dereferences to double frees, were reported in libTIFF.

Impact
======

An attacker could exploit these vulnerabilities by enticing a user to
open a specially crafted TIFF image, possibly leading to the execution
of arbitrary code or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libTIFF users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/tiff-3.8.1"

References
==========

  [ 1 ] CVE-2006-0405
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0405
  [ 2 ] CVE-2006-2024
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2024
  [ 3 ] CVE-2006-2025
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2025
  [ 4 ] CVE-2006-2026
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2026

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

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

  http://security.gentoo.org/glsa/glsa-200605-17.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 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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