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Microsoft Security Bulletin (MS00-083)

- --------------------------------------



Patch Available for "Netmon Protocol Parsing" Vulnerability



Originally posted: November 01, 2000



Summary

=======

Microsoft has released a patch that eliminates a security

vulnerability in Microsoft(r) Windows NT(r) and Windows(r) 2000

server products and Systems Management Server. The vulnerability

could allow a malicious user to gain control of an affected server.



Frequently asked questions regarding this vulnerability and

the patch can be found at

http://www.microsoft.com/technet/security/bulletin/fq00-083.asp



Issue

=====

Microsoft ships two versions of Network Monitor (Netmon): a basic

version that ships with Windows NT 4.0 and Windows 2000 server

products, and full version that ships as part of Systems Management

Server (SMS) 1.2 and 2.0. Both versions include protocol parsers that

aid administrators in interpreting and analyzing previously-captured

network data. However, several of the parsers have unchecked buffers.

If a malicious user delivered a specially-malformed frame to a server

that was monitoring network traffic, and the administrator parsed it

using an affected parser, it would have the effect of either causing

Netmon to fail or causing code of the malicious user's choice to run

on the machine.



Netmon requires administrative privileges to run, but should only be

run by local, rather than domain, administrators. If this is done,

the vulnerability could be used to gain complete control over the

local machine, but could not be used to gain control over a domain.

Netmon does not ship on workstation products, so unless SMS had been

installed on a workstation, it would not be affected by this

vulnerability.



Affected Software Versions

==========================

 - Microsoft Windows NT 4.0 Server

 - Microsoft Windows NT 4.0 Server, Terminal Server Edition

 - Microsoft Windows NT 4.0 Server, Enterprise Edition

 - Microsoft Windows 2000 Server

 - Microsoft Windows 2000 Advanced Server

 - Microsoft Windows 2000 Datacenter Server

 - Microsoft Systems Management Server 1.2

 - Microsoft Systems Management Server 2.0



Note: Netmon does not ship as part of Windows NT 4.0 Workstation or

Windows 2000 Professional. These products would only be affected if

SMS had been installed on them.



Patch Availability

==================

 - Microsoft Windows NT 4.0 Server and Windows NT 4.0 Server,

   Enterprise Edition:

   http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25487

 - Microsoft Windows NT 4.0 Server, Terminal Server Edition:

   To be released shortly.

 - Microsoft Windows 2000 Server, Advanced Server and

   Datacenter Server:

   http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25485

 - Microsoft Systems Management Server 1.2:

   http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25505

 - Microsoft Systems Management Server 2.0:

   http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25514



Note: Customers who are running SMS should apply the SMS patch,

regardless of the platform they are running on. Customers who are not

running SMS but are using an affected server should apply the

operating system patch.



Note:

 - The patch for Windows NT 4.0 Server and Windows NT 4.0 Server,

   Enterprise Edition, should be applied atop Service Pack 6a.

   It will be included in Service Pack 7.

 - The patch for Windows NT 4.0 Server, Terminal Server Edition,

   should be applied atop Service Pack 6. It will be included in

   Service Pack 7.

 - The patch for Windows 2000 can be applied to computers running

   Windows 2000 "Gold" or Service Pack 1. It will be included in

   Windows Service Pack 2.

 - The patch for SMS 1.2 should be applied atop SMS 1.2 Service

   Pack 4.

 - The patch for SMS 2.0 can be applied to SMS 2.0 Gold, Service

   Pack 1, or Service Pack 2. It will be included in Service Pack 3.



Note: Additional security patches are available at the Microsoft

Download Center



More Information

================

Please see the following references for more information related to

this issue.

 - Frequently Asked Questions: Microsoft Security Bulletin MS00-083,

   http://www.microsoft.com/technet/security/bulletin/fq00-083.asp

 - Microsoft Knowledge Base article Q274835 discusses this issue

   and will be available soon.

 - Microsoft TechNet Security web site,

   http://www.microsoft.com/technet/security/default.asp



Obtaining Support on this Issue

===============================

This is a fully supported patch. Information on contacting Microsoft

Product Support Services is available at

http://support.microsoft.com/support/contact/default.asp.



Acknowledgments

===============

Microsoft thanks COVERT Labs at PGP Security, Inc.

(http://www.pgp.com/), and the ISS X-force (http://xforce.iss.net/)

for reporting this issue to us and working with us to protect

customers.



Revisions

=========

 - November 01, 2000: Bulletin Created.



- ----------------------------------------------------------



THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED

"AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL

WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT

SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY

DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,

CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF

MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION

OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO

THE FOREGOING LIMITATION MAY NOT APPLY.



Last Updated November 01, 2000



(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.





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