Title: Microsoft Index Server Webhits.dll ASP Source Disclosure Vulnerability
Severity: MODERATE
Description:
Webhits.dll is part of the Microsoft Index Server package distributed with Windows NT 4.0 and 2000. A problem with the package could allow remote users to gain access to source code of ASP documents.
The problem occurs in the handling of the space string by the library. When a page is requested using the null.htw file, the request is handled by the Webhits.dll library. However, null.htw is not a real file, and is only maintained in memory. By appending a space to the end of the requested file (%20), the source code of the page will be returned to the requesting user, rather than the actual page. This makes it possible for a user with malicious intentions to gain access to the system by extracting the user ID and passwords that may be contained in .asp and .asa files.
Affected Products:
- Microsoft IIS 4.0.0
- Microsoft IIS 4.0.0alpha
- Microsoft IIS 5.0
- Microsoft Index Server 2.0.0
- Microsoft Index Server 2.0.0alpha
- Microsoft Indexing Services for Windows 2000 0.0.0
References:
- Microsoft: Microsoft Security Bulletin (MS00-006)
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