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breedzero.txt

breedzero.txt
Posted Jan 16, 2005
Authored by Luigi Auriemma | Site aluigi.altervista.org

The Breed game server is susceptible to a remote denial of service attack when sent an empty UDP packet.

tags | advisory, remote, denial of service, udp
SHA-256 | 7a562c3828a442ba297a94ba95df2ede4d37761a0a249397c9a5e979fbce4b09

breedzero.txt

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

Luigi Auriemma

Application: Breed
http://www.brat-designs.com/breed.html
Versions: <= patch #1
Platforms: Windows
Bug: access to NULL pointer
Exploitation: remote, versus server
Date: 13 Jan 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
===============


Breed is a game developed by Brat Designs (http://www.brat-designs.com)
using their Mercury engine.
It has been released in February 2004.


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

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


The game server can be easily crashed through the sending of an empty
UDP packet.
In fact if the packet size is equal to zero, the game passes a NULL
pointer to the function used to parse the packet's content.


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

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


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


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

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


No fix.
No reply from the vendor.


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


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

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