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Buffer-overflow in Tincat 2 minor than 2.0.28 (Sacred, Settlers 5 and ot

from [Luigi Auriemma] Network Security [Permanent Link]
Subject: Buffer-overflow in Tincat 2 minor than 2.0.28 (Sacred, Settlers 5 and others)
Date: Mon, 28 Mar 2005 15:14:23 +0000 

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

                             Luigi Auriemma

Application:  Tincat network library
              http://www.tincat.de
Versions:     Release 2 < 2.0.28
              Release 1 should be not vulnerable
Games:        - Sacred                                       <= 1.8.2.6
              - The Settlers: Heritage of Kings                 <= 1.02
              - other applications, a partial list in german is
                available at the following link but I cannot confirm if
                they are vulnerable:
                http://www.tincat.de/index.php?topic=5
Platforms:    Windows, Linux and Sun Solaris
Bug:          buffer-overflow
Exploitation: remote, versus server
Date:         28 Mar 2005
Author:       Luigi Auriemma
              e-mail: aluigi@autistici.org
              web:    http://aluigi.altervista.org


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


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


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

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


Tincat is a network library for games and has been developed by the
german guys of Instance Four (http://www.instancefour.com).
It is used in some games like the recents and well known Sacred
(http://www.sacred-game.com) and The Settlers: Heritage of Kings
(http://www.thesettlers.com).


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

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


The library is affected by a buffer-overflow in the function that logs
the players entered in the server letting an attacker to execute
malicious code on the victim system.


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

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


http://aluigi.altervista.org/poc/tincat2bof.zip


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

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


The library has been patched from build 28 (2.0.28).

Actually "The Settlers: Heritage of Kings" 1.03 is the only game that
uses the new patched library.


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


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