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Gentoo Linux Security Advisory 200505-7

Gentoo Linux Security Advisory 200505-7
Posted Jul 2, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200505-07 - 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. Versions less than 3.7.2 are affected.

tags | advisory, overflow
systems | linux, gentoo
SHA-256 | 10f00fb5875050a3e524daa001dab1ae2df6cb0acba56164a9325e4481f90dbf

Gentoo Linux Security Advisory 200505-7

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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
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/tiff < 3.7.2 >= 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 ">=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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