Summary An attempt has been made to exploit the Microsoft Index Server in order to grab unauthorized files from the system. Details Microsoft Index Server 2.0 is a subsystem that comes with IIS 4.0. It provides a standard search engine for the server, indexing the content on the server and providing search capabilities for users.
Hackers can use the common directory traversal technique in order to access any file on the system.
Defense Install the patch provided by Microsoft. The HTTP return code.