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Luigi Auriemma

Application: Master of Orion III
http://moo3.quicksilver.com
Versions: <= 1.2.5
Platforms: Windows and MacOS
Bugs: - allocation error
- big nicknames crash
Exploitation: remote, versus server
Date: 27 October 2004
Author: Luigi Auriemma
e-mail: aluigi (at) altervista (dot) org [email concealed]
web: http://aluigi.altervista.org

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

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1) Introduction
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Master of Orion III is a spatial strategy game developed by Quicksilver
(http://www.quicksilver.com) and released in February 2003.

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2) Bugs
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A] allocation error
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Each data block exchanged between clients and server is preceded by a
32 bits number used to specify its size.
This amount of data is automatically allocated by the game and if it is
too big, and so unallocable, the game automatically exits.

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B] big nicknames crash
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The game uses some anti buffer-overflow protections but if an attacker
makes multiple consecutive connections (variable between 1 and 10)
using big nicknames, the game crashs.

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3) The Code
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http://aluigi.altervista.org/poc/moo3boom.zip

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4) Fix
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No fix.
Developers will not fix this problem unless there are significant
incidents reported.

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Luigi Auriemma
http://aluigi.altervista.org

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