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



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 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.

[$ telnet 119
Connected to
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)  


Where buffer is 10000 characters.

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

Vendor Status:  

Vendor   Url:
Program  Url:
Download Url:

Related Links:

Underground Security Systems Research

Eeye, Attrition, w00w00, beavuh, Rhino9,, ADM, HNN, Technotronic and Wiretrip. HNC

Copyright (c) 1999-2000 Underground Security Systems Research.
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited 
in any way without express consent of Ussr. If you wish to reprint the whole or any part of this alert in 
any other medium excluding electronic medium, please e-mail for permission.

The information within this paper may change without notice. Use of this information constitutes 
acceptance for use in an AS IS condition. There are NO warranties with regard to this information. 
In no event shall the author be liable for any damages whatsoever arising out of or in connection 
with the use or spread of this information. Any use of this information is at the user's own risk.

Please send suggestions, updates, and comments to:

Underground Security Systems Research