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Microsoft Patch Tuesday Roundup - November 2011

The most interesting, and concerning, vulnerability patched this month is the remote TCP/IP code execution flaw fixed with MS11-083. The flaw can be triggered by sending a large number of UDP packets to a non-listening port on a remote host. There are several ways in which this could happen very easily, such as a poorly configured firewall, or an open port on a firewall that is allowing traffic the host is no longer listening on. The Microsoft Security and Defense team put together an article to gauge exploitability, and gave it a "2". I'm not sure that helps a whole lot, but if there is one thing that is certain, attackers will be looking to create an exploit for this flaw ASAP.

To help evaluate the vulnerabilities addressed by Microsoft’s Patch Tuesday, Tenable's Research team has published Nessus plugins for each of the security bulletins issued this month: