GLSA 200601-08 Blender: Heap-based buffer overflow
Posted on: 01/13/2006 08:42 AM

A new security update has been released for Gentoo Linux - Blender: Heap-based buffer overflow. Here the announcement:

Gentoo Linux Security Advisory GLSA 200601-08
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http://security.gentoo.org/
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Severity: Normal
Title: Blender: Heap-based buffer overflow
Date: January 13, 2006
Bugs: #118163
ID: 200601-08

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Synopsis
========

Blender is vulnerable to a buffer overflow that may be exploited by
attackers to execute arbitrary code.

Background
==========

Blender is an open source software for 3D modeling, animation,
rendering, post-production, interactive creation and playback.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/blender lt; 2.40 gt;= 2.40

Description
===========

Damian Put has reported a flaw due to an integer overflow in the
"get_bhead()" function, leading to a heap overflow when processing
malformed ".blend" files.

Impact
======

A remote attacker could entice a user into opening a specially crafted
".blend" file, resulting in the execution of arbitrary code with the
permissions of the user running Blender.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Blender users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=media-gfx/blender-2.40"

References
==========

[ 1 ] CVE-2005-4470
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4470

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

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

http://security.gentoo.org/glsa/glsa-200601-08.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/2.0



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