Microsoft Windows NT 4.0 Patch: Malformed Hit-highlighting

Name: Microsoft Windows NT 4.0 Patch: Malformed Hit-highlighting
Rating: 4.9 (1 reviews)
Author: Microsoft

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Developer’s Description

By Microsoft

Windows NT update

This update addresses the "Malformed Hit-Highlighting" security vulnerability in Windows NTÃ?????Ã????Ã???Ã??Ã?Â® 4.0 computers running Index Server 2.0, and is discussed in Microsoft Security Bulletin MS01-025. Download now to prevent a malicious user from reading files on your Web server.

When you conduct a search using Indexing Server 2.0, the hit-highlighting function provides search results that highlight portions of documents that satisfy your search query. This vulnerability exists because Indexing Server 2.0 doesn't set the correct parameters for hit-highlighting search requests. If a malicious user provides a specific type of malformed request, it retrieves files on the server, regardless of the permissions that have been set by the administrator.

By design, the hit-highlighting feature allows the user to specify the name of the document to be hit-highlighted. The user should only be able to request documents within the server's virtual directories; however, if a specific type of malformed argument is provided, it can be used to request a file by its physical location on the drive.

For more information about this vulnerability, read Microsoft Security Bulletin MS01-025.