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[gentoo-announce] [ GLSA 201001-07 ] Blender: Untrusted search path

Posted on 13 January 2010
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201001-07
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http://security.gentoo.org/
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Severity: Normal
Title: Blender: Untrusted search path
Date: January 13, 2010
Bugs: #245310
ID: 201001-07

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Synopsis
========
An untrusted search path vulnerability in Blender might result in the
execution of arbitrary code.

Background
==========
Blender is a 3D Creation/Animation/Publishing System.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-gfx/blender < 2.48a-r3 >= 2.48a-r3

Description
===========
Steffen Joeris reported that Blender's BPY_interface calls
PySys_SetArgv() in such a way that Python prepends sys.path with an
empty string.

Impact
======
A local attacker could entice a user to run "blender" from a directory
containing a specially crafted Python module, resulting in the
execution of arbitrary code with the privileges of the user running the
application.

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 ">=media-gfx/blender-2.48a-r3"

References
==========
[ 1 ] CVE-2008-4863
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4863

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

http://security.gentoo.org/glsa/glsa-201001-07.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
https://bugs.gentoo.org.

License
=======
Copyright 2010 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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