GLSA 200505-07: libTIFF: Buffer overflow
Posted on: 05/10/2005 05:13 PM

A libTIFF security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200505-07
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http://security.gentoo.org/
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Severity: Normal
Title: libTIFF: Buffer overflow
Date: May 10, 2005
Bugs: #91584
ID: 200505-07

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Synopsis
=======

The libTIFF library is vulnerable to a buffer overflow, potentially resulting in the execution of arbitrary code.

Background
=========

libTIFF provides support for reading and manipulating TIFF (Tag Image File Format) images.

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

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Package / Vulnerable / Unaffected
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1 media-libs/tiff lt; 3.7.2 gt;= 3.7.2

Description
==========

Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a stack based buffer overflow in the libTIFF library when reading a TIFF image with a malformed BitsPerSample tag.

Impact
=====

Successful exploitation would require the victim to open a specially crafted TIFF image, resulting in the 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-3.7.2"

References
=========

[ 1 ] LIBTIFF BUG#863
http://bugzilla.remotesensing.org/show_bug.cgi?id=843

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

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

http://security.gentoo.org/glsa/glsa-200505-07.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 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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