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Blender: Heap-based buffer overflow


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200601-08 / blender
Release Date January 13, 2006
Latest Revision January 13, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-gfx/blender < 2.40 >= 2.40 All supported architectures

Related bugreports: #118163


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

2.  Impact Information


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


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.


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.

3.  Resolution Information


There is no known workaround at this time.


All Blender users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4.  References


Page updated January 13, 2006

Summary: This is a Gentoo Linux Security Advisory

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