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Synopsis: The Sourcefire VRT has continued research into a vulnerability affecting Microsoft Excel and has updated the DocCheck tool to process xls files to determine the presence of an exploit.
Details: Microsoft Security Advisory (921365) Microsoft Excel contains a programming error that can allow a remote attacker to run code of their choosing on an affected host system via the processing of a malformed .xls file. The issue is present in the dynamic link library file HLINK.DLL which handles Universal Resource Identifiers (URI) embedded in office documents.
The DocCheck tool has been updated to process xls files to determine if the file contains possible exploit code for this vulnerability.