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TUCoPS :: Games :: bx3623.htm

Endless loop in Soldner 33724



Endless loop in Soldner 33724
Endless loop in Soldner 33724




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                             Luigi Auriemma

Application:  S=D6LDNER - Secret Wars
http://www.secretwars.net 
http://soldner.jowood.com 
Versions:     <= 33724
Platforms:    Windows
Bug:          endless loop
Exploitation: remote, versus server
Date:         01 Jul 2008
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
==============

S=D6LDNER is a tactical military game developed by Wings Simulations
and released in May 2004.


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=====2) Bug
=====

Each UDP packet for this game can contain various blocks of data.
The type 0x80 forces the server to perform a cycle from zero to the 32
bit number (so max 0xffffffff) specified in that data block.
The maximum size of a packet supported by the game is 1400 bytes in
which is possible to place max 233 blocks of this type causing the
freeze of a server for over 2 hours (tested with a fast CPU).


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

http://aluigi.org/poc/usurdat.zip 


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

No fix


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--- 
Luigi Auriemma
http://aluigi.org 


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