[ GLSA 201001-07 ] Blender: Untrusted search path

[Stefan Behte <craig () gentoo org>]

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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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