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Remote DoS Attack in Windows 2000/NT 4.0 TCP/IP Print Request Server Vulnerability
From: labs () USSRBACK COM (Ussr Labs)
Date: Thu, 30 Mar 2000 15:48:09 -0300


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Remote DoS Attack in Windows 2000/NT 4.0 TCP/IP Print Request Server
Vulnerability

USSR Advisory Code:   USSR-2000037

Release Date:
March 28, 2000

Systems Affected:
Microsoft Windows NT 4.0 Workstation
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Server, Enterprise Edition
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows 2000 Advanced Server

Services Affected:
SimpTCP,
DHCPServer
FTPSvc,
LPDSvc,
BinlSvc,
TCP/IP Print Request Server.

THE PROBLEM

Ussr Labs found a heap memory problem in TCP/IP Print Server, if
anyone perform a atack with
specially-malformed information to port (515 Print Server),could
cause the process
containing the service to crash,and also could cause other services
such as, SimpTCP, DHCPServer
FTPSvc, LPDSvc, BinlSvc,to stop.

Binary or Source for this D.o.S:

http://www.ussrback.com/

The Exploit:

The D.O.S, stop the remote machine services:
SimpTCP,
DHCPServer,
FTPSvc,
LPDSvc,
BinlSvc,
and crash the TCP/IP Print Request Server

Vendor Status:
Contacted: Mon 2/28/2000 5:54 PM

Vendor   Url: http://www.microsoft.com
Program  Url: http://www.microsoft.com/windows/default.asp

Fix:

Windows 2000 (all versions):
http://www.microsoft.com/Downloads/Release.asp?ReleaseID=19884

Windows NT 4.0
http://www.microsoft.com/downloads/release.asp?releaseID=20015

Windows NT 4.0 Alpha:
http://www.microsoft.com/downloads/release.asp?releaseID=20016

More Information:
http://www.microsoft.com/technet/security/bulletin/ms00-021.asp

Microsoft Security Bulletin MS00-021: Frequently Asked Questions,
http://www.microsoft.com/technet/security/bulletin/fq00-021.asp

Microsoft Knowledge Base (KB) article Q257870.
http://www.microsoft.com/technet/support/kb.asp?ID=257870

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

u n d e r g r o u n d  s e c u r i t y  s y s t e m s  r e s e a r c
h
http://www.ussrback.com

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