full-disclosure - Endless loop in Soldner 33724

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Message-Id: <20080701015244.3dbd600e.aluigi@autistici.org>
Date: Tue, 1 Jul 2008 01:52:44 +0100
From: Luigi Auriemma <aluigi@...istici.org>
To: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	packet@...ketstormsecurity.org, cert@...t.org, news@...uriteam.com
Subject: Endless loop in Soldner 33724

#######################################################################

                             Luigi Auriemma

Application:  SÖLDNER - 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@...istici.org
              web:    aluigi.org

#######################################################################

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

#######################################################################

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

SÖLDNER is a tactical military game developed by Wings Simulations
and released in May 2004.

#######################################################################

======
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).

#######################################################################

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

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

#######################################################################

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

No fix

#######################################################################

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

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