Article ID: 313489 - Last Review: November 21, 2006 - Revision: 4.1

You can place content headers in the body of a response if an ISAPI filter is installed

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View products that this article applies to.
This article was previously published under Q313489
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
http://www.microsoft.com/technet/security/prodtech/IIS.mspx (http://www.microsoft.com/technet/security/prodtech/IIS.mspx)
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SYMPTOMS

When an Internet Information Services (IIS) 5.0 HTTP client or an IIS 5.1 HTTP client sends a Content-Range header or a Content-Type header to IIS, it is possible that when IIS adds its Content-Range header, it may improperly place the header in the body of the HTTP response.
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CAUSE

This behavior only occurs if the outgoing headers were modified by an IIS ISAPI filter, which may occur if, for example, you use the IIS security tool, URLscan, to remove the "Server:" header.
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RESOLUTION

The update for this problem is included in the "MS02-018: April 2002 Cumulative Patch for Internet Information Services". For more information about how to obtain this patch, click the following article number to view the article in the Microsoft Knowledge Base:
319733  (http://support.microsoft.com/kb/319733/ ) MS02-018: April 2002 cumulative patch for Internet Information Services
To resolve this problem, obtain the latest service pack for Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
260910  (http://support.microsoft.com/kb/260910/ ) How to obtain the latest Windows 2000 service pack
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows 2000 Service Pack 3.
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MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
316864  (http://support.microsoft.com/kb/316864/ ) Problems with Adobe Acrobat 5.0 after you install URLScan
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APPLIES TO
  • Microsoft Internet Information Services 5.0
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Keywords: 
kbhotfixserver kbqfe kbbug kbfix kbwin2000presp3fix kbwin2000sp3fix KB313489
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Retired KB ArticleRetired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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