Technical Information

Brief overview of the risk:
A remote code execution vulnerability exists in the way that Microsoft Server Message Block (SMB) Protocol handles specially crafted file names. An attempt to exploit the vulnerability would require authentication because the vulnerable function is only reachable when the share type is a disk, and by default, all disk shares require authentication.
Detailed Information on the risk:
This security update resolves a privately reported vulnerability in Microsoft Server Message Block (SMB) Protocol. The vulnerability could allow remote code execution on a server that is sharing files or folders. An attacker who successfully exploited this vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. Further information on this exploit is available at : MS08-063