MS08-036: PGM? What is PGM?

This morning we released MS08-036 to fix two denial-of-service vulnerabilities in the Windows implementation of the Pragmatic General Multicast (PGM) protocol (RFC 3208).  You probably have never heard of PGM.  Only one engineer on our team had ever heard of it and he previously worked as a tester on the core network components team.  PGM…

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