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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
-------------------------------------------------------------------
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@xxxxxxxxxx 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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