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[gentoo-announce] [ GLSA 200809-07 ] libTIFF: User-assisted execution of arbitrary

Posted on 08 September 2008
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 200809-07
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http://security.gentoo.org/=
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Severity: Normal
Title: libTIFF: User-assisted execution of arbitrary code
Date: September 08, 2008
Bugs: #234080
ID: 200809-07

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Synopsis
========
Multiple buffer underflow vulnerabilities in libTIFF may allow for the
remote execution of arbitrary code.

Background
==========
libTIFF provides support for reading and manipulating TIFF (Tagged
Image File Format) images.

Affected packages
=================
-------------------------------------------------------------------=
Package / Vulnerable / Unaffected
-------------------------------------------------------------------=
1 media-libs/tiff < 3.8.2-r4 >= 3.8.2-r=4

Description
===========
Drew Yao (Apple Product Security) and Clay Wood reported multiple
buffer underflows in the LZWDecode() and LZWDecodeCompat() functions in
tif_lzw.c when processing TIFF files.

Impact
======
A remote attacker could entice a user to open a specially crafted TIFF
file with an application making use of libTIFF, possibly resulting in
the remote execution of arbitrary code with the privileges of the user
running the application.

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-3.8.2-r4"

References
==========
[ 1 ] CVE-2008-2327
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2327

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

http://security.gentoo.org/glsa/glsa-200809-07.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 2008 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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