Microsoft KB Archive/252352

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FIX: HTTP Error 403 When Submitting PATH_INFO to Mapped Application

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Q252352

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The information in this article applies to:


 * Microsoft Windows NT Server version 4.0 SP6a
 * Microsoft Windows NT Workstation version 4.0 SP6a

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SYMPTOMS
When submitting extra path information to an Internet Information Server (IIS) application that has been mapped to a file extension, an error "403.2 Forbidden: Read Access Forbidden" will be returned to the browser.

RESOLUTION
This problem can be resolved by loading the hotfix available at the following location:

"IIS 4.0 SSL ISAPI Filter Update"

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

MORE INFORMATION
The following URL will execute the CGITest.exe application passing /Extradir/Extra.txt as PATH_INFO.

"http:// / /CGITest.exe/extradir/extra.txt" You can map a file extension to the CGITest.exe using the Internet Service Manager. If the mscgi extension is mapped to CGITest.exe, the above URL can be executed as follows:

"http:// / /CGITest.mscgi/extradir/extra.txt" In this case, computers running Windows NT 4 Service Pack 6a will return a 403 error.