full-disclosure - [ GLSA 200501-06 ] tiff: New overflows in image decoding

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Message-ID: <41DC64B7.5080808@gentoo.org>
From: koon at gentoo.org (Thierry Carrez)
Subject: [ GLSA 200501-06 ] tiff: New overflows in image
	decoding

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Gentoo Linux Security Advisory                           GLSA 200501-06
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: tiff: New overflows in image decoding
      Date: January 05, 2005
      Bugs: #75213
        ID: 200501-06

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Synopsis
========

An integer overflow has been found in the TIFF library image decoding
routines and the tiffdump utility, potentially allowing arbitrary code
execution.

Background
==========

The TIFF library contains encoding and decoding routines for the Tag
Image File Format. It is called by numerous programs, including GNOME
and KDE applications, to interpret TIFF images.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  media-libs/tiff     < 3.7.1-r1                        >= 3.7.1-r1

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

infamous41md found a potential integer overflow in the directory entry
count routines of the TIFF library (CAN-2004-1308). Dmitry V. Levin
found another similar issue in the tiffdump utility (CAN-2004-1183).

Impact
======

A remote attacker could entice a user to view a carefully crafted TIFF
image file, which would potentially lead to execution of arbitrary code
with the rights of the user viewing the image. This affects any program
that makes use of the TIFF library, including many web browsers or mail
readers.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All TIFF library users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/tiff-3.7.1-r1"

References
==========

  [ 1 ] CAN-2004-1183
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1183
  [ 2 ] CAN-2004-1308
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1308
  [ 3 ] iDEFENSE Advisory

http://www.idefense.com/application/poi/display?id=174&type=vulnerabilities

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

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

  http://security.gentoo.org/glsa/glsa-200501-06.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 2005 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/2.0

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