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Q325571: Buffer Overrun in IIS When No Script Maps Exist

Article: Q325571
Product(s): Internet Information Server
Version(s): 5.0
Operating System(s): 
Keyword(s): kbCOMIS kbWin2000preSP4Fix kbWin2000sp3fix
Last Modified: 15-AUG-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Internet Information Services version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

If no script maps exist for the Web site, a specially formatted URL can cause a
buffer overrun, causing IIS to crash.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem that is described in this article. Apply it only to
computers that are experiencing this specific problem. This fix may receive
additional testing. Therefore, if you are not severely affected by this problem,
Microsoft recommends that you wait for the next Windows 2000 service pack that
contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, visit the following Microsoft
Web site:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls
may be canceled if a Microsoft Support Professional determines that a specific
update will resolve your problem. The typical support costs will apply to
additional support questions and issues that do not qualify for the specific
update in question.

The English version of this fix has the file attributes (or later) that are
listed in the following table. The dates and times for these files are listed in
coordinated universal time (UTC). When you view the file information, it is
converted to local time. To find the difference between UTC and local time, use
the Time Zone tab in the Date and Time tool in Control Panel.

  Date         Time   Version            Size    File name
  --------------------------------------------------------------
  01-Jul-2002  12:04  5.0.2195.5917     333,072  Asp.dll          
  01-Jul-2002  12:04  5.0.2195.3649     299,792  Fscfg.dll        
  01-Jul-2002  12:04  5.0.2195.5255       8,464  Ftpctrs2.dll     
  01-Jul-2002  12:04  5.0.2195.5255       6,416  Ftpmib.dll       
  01-Jul-2002  12:04  5.0.2195.5255       9,488  Httpmib.dll      
  01-Jul-2002  12:04  5.0.2195.5255      13,584  Infoadmn.dll     
  01-Jul-2002  12:04  5.0.2195.5255     246,032  Infocomm.dll     
  01-Jul-2002  12:04  5.0.2195.5810      62,736  Isatq.dll        
  01-Jul-2002  12:04  5.0.2195.5255       7,440  W3ctrs.dll       
  01-Jul-2002  12:04  5.0.2195.5919     349,456  W3svc.dll        



WORKAROUND
==========

Add a script mapping for the Web site.

STATUS
======

Microsoft has confirmed that this is a problem in Microsoft Internet Information
Services 5.0.

MORE INFORMATION
================

For additional information about how to obtain a hotfix for Windows 2000
Datacenter Server, click the article number below to view the article in the
Microsoft Knowledge Base:

  Q265173 Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one
reboot, click the article number below to view the article in the Microsoft
Knowledge Base:

  Q296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Additional query words:

======================================================================
Keywords          : kbCOMIS kbWin2000preSP4Fix kbWin2000sp3fix 
Technology        : kbiisSearch kbiis500
Version           : :5.0
Hardware          : x86
Issue type        : kbbug
Solution Type     : kbfix

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

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