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

2000-06-17T00:00:00
ID SECURITYVULNS:DOC:351
Type securityvulns
Reporter Securityvulns
Modified 2000-06-17T00:00:00

Description

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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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