DOCUMENT:Q143484    [winnt]
TITLE: Internet Information Server Denial Of Service Attack
PRODUCT: Microsoft Windows NT
PROD/VER:4.00
OPER/SYS:WINDOWS
KEYWORDS:kbbug4.00 kbfile kbfix4.00

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0
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SYMPTOMS
==========
Internet Information Server services are stopped and a Dr. Watson error is 
generated referencing the Inetinfo.exe process.

CAUSE
======
The Internet Information Server services will stop when it receives a CGI 
request from a browser that contains between 4k to 8k chunk of data in the URL. 

STATUS
======
Microsoft has confirmed this to be a problem in Internet Information Server 
version 2.0 and 3.0

A supported fix is now available, but has not been fully regression-tested 
and should be applied only to systems experiencing this specific problem.
Unless you are severely impacted by this specific problem, Microsoft 
recommends that you wait for the next Service Pack that contains this fix. 
Contact Microsoft Technical Support for more information. 

The fix is also available for download on the Internet at the following
URL:

   ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt40/
   hotfixes-postSP3/iis-fix

Additional query words: 4.00 iis

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