One thing I noticed when using this exploit, is that once you use it on a box, you will have to restart the popped box in order to run the exploit again. It is very weird. We had a bunch of people working on a Windows box in a MSF breakout session, we only had one Windows VM running.
It works on the current revision, which is 9478.
[edit] after talking to the guy that was in charge with the VMs that night, he had too restore the snapshot for some reason. I'm not exactly sure why that was.



