From: Sune Kloppenborg Jeppesen <jaervosz@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200608-17 ] libwmf: Buffer overflow vulnerability
Date: Thu, 10 Aug 2006 21:12:17 +0200
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Organization: Gentoo Linux Security Team
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Gentoo Linux Security Advisory GLSA 200608-17
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http://security.gentoo.org/
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Severity: Normal
Title: libwmf: Buffer overflow vulnerability
Date: August 10, 2006
Bugs: #139325
ID: 200608-17
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Synopsis
========
libwmf is vulnerable to an integer overflow potentially resulting in
the execution of arbitrary code.
Background
==========
libwmf is a library for reading and converting vector images in
Microsoft's native Windows Metafile Format (WMF).
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-libs/libwmf < 0.2.8.4 >= 0.2.8.4
Description
===========
infamous41md discovered that libwmf fails to do proper bounds checking
on the MaxRecordSize variable in the WMF file header. This could lead
to an head-based buffer overflow.
Impact
======
By enticing a user to open a specially crafted WMF file, a remote
attacker could cause a heap-based buffer overflow and execute arbitrary
code with the permissions of the user running the application that uses
libwmf.
Workaround
==========
There is no known workaround for this issue.
Resolution
==========
All libwmf users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libwmf-0.2.8.4"
References
==========
[ 1 ] CVE-2006-3376
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3376
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200608-17.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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