Unity 3D Web Player 3.2.0.61061 - Denial of Service

EDB-ID:

18512

CVE:





Platform:

Windows

Date:

2012-02-22


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                             Luigi Auriemma

Application:  Unity 3D web player
              http://unity3d.com/webplayer/
Versions:     <= 3.2.0.61061
Platforms:    Windows
Bug:          heap corruption
Exploitation: remote
Date:         21 Feb 2012
Author:       Luigi Auriemma
              e-mail: aluigi@autistici.org
              web:    aluigi.org


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1) Introduction
2) Bug
3) The Code
4) Fix


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===============
1) Introduction
===============


Unity 3d is a game engine used in various games and it's web player
allows to play these games (unity3d extension) also directly from the
web browser.


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2) Bug
======


Heap corruption caused by a negative 32bit size value which allows to
execute malicious code.

The provided proof-of-concept is not optimized but should show a write4
and, (tested on Firefox) EIP pointing to an invalid memory zone.


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===========
3) The Code
===========


http://aluigi.org/poc/unity3d_1.zip
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/18512.zip


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======
4) Fix
======


No fix.


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