ThreatExpert Blog has an excellent write up on the Gimmiv.A worm

Yesterday Microsoft release a security patch for a critical vulnerability. It seems a worm has been found exploiting this vulnerability in the wild. If you head over to the ThreatExpert Blog you can find a full write-up on this worm and how it's using this critical vulnerability to exploit systems.

Critical vulnerability in Server Service has only been patched by Microsoft (MS08-067), as a new worm called Gimmiv.A has found to be exploiting it in-the-wild.

If you run Snort IDS here is a link to rules that block this vulnerability.