Unity 3D Web Player <= 3.2.0.61061 Denial of Service



EKU-ID: 1530 CVE: OSVDB-ID:
Author: Luigi Auriemma Published: 2012-02-23 Verified: Verified
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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
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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
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http://aluigi.org/poc/unity3d_1.zip
http://www.exploit-db.com/sploits/18512.zip
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4) Fix
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No fix.
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