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Details : SecurityAlert

  Topic : NULL pointer in ZDaemon 1.08.07
  SecurityAlert : 4043
  CVE : CVE-2008-3314
  CWE : CWE-20
  SecurityRisk : Medium  alert  (About)
  Remote Exploit : Yes
  Local Exploit : No
  Victim interaction required : No
  Exploit Given : Yes
  Credit : Luigi Auriemma
  Published : 28.07.2008

  Affected Software : Zdaemon, Zdaemon, 1.08.01
Zdaemon, Zdaemon, 1.08.02
Zdaemon, Zdaemon, 1.08.03
Zdaemon, Zdaemon, 1.08.04
Zdaemon, Zdaemon, 1.08.05
Zdaemon, Zdaemon, 1.08.06
Zdaemon, Zdaemon, 1.08
Zdaemon, Zdaemon, 1.08.07, and previous



  Advisory Text :  

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

Luigi Auriemma

Application: ZDaemon
http://www.zdaemon.org
Versions: <= 1.08.07
Platforms: Windows and Linux
Bug: NULL pointer
Exploitation: remote, versus server (in-game)
Date: 21 Jul 2008
Author: Luigi Auriemma
e-mail: aluigi (at) autistici (dot) org [email concealed]
web: aluigi.org

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

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

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

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

ZDaemon is one of the most played multiplayer ports of the Doom engine
and at the same time one of the most criticized too.

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

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

The ZDaemon server is affected by a NULL pointer vulnerability which
allows an attacker to crash it when a specific type of command (type 6)
is used.

The attacker needs to join the server for exploiting this bug so his IP
address must be not banned and he must know the right keyword if the
server is protected with a password.

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

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

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

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

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

No fix

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

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



  References :

http://xforce.iss.net/xforce/xfdb/43946
http://www.securityfocus.com/bid/30340
http://www.securityfocus.com/archive/1/archive/1/494634/100/0/threaded
http://secunia.com/advisories/31185
http://aluigi.org/poc/zdaemonull.zip
http://aluigi.altervista.org/adv/zdaemonull-adv.txt



  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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