GLSA 200607-03 libTIFF: Multiple buffer overflows
Posted on: 07/09/2006 08:12 PM

A new security update has been released for Gentoo Linux - libTIFF: Multiple buffer overflows. Here the announcement:

Gentoo Linux Security Advisory GLSA 200607-03
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http://security.gentoo.org/
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Severity: Normal
Title: libTIFF: Multiple buffer overflows
Date: July 09, 2006
Bugs: #135881
ID: 200607-03

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Synopsis
========

libTIFF contains buffer overflows that could result in arbitrary code
execution.

Background
==========

libTIFF provides support for reading and manipulating TIFF images.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/tiff lt; 3.8.2-r1 gt;= 3.8.2-r1

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

A buffer overflow has been found in the t2p_write_pdf_string function
in tiff2pdf, which can been triggered with a TIFF file containing a
DocumentName tag with UTF-8 characters. An additional buffer overflow
has been found in the handling of the parameters in tiffsplit.

Impact
======

A remote attacker could entice a user to load a specially crafted TIFF
file, resulting in the possible execution of arbitrary code.

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 "gt;=media-libs/tiff-3.8.2-r1"

References
==========

[ 1 ] CVE-2006-2193
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2193
[ 2 ] CVE-2006-2656
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2656

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

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

http://security.gentoo.org/glsa/glsa-200607-03.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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