The named pipe, \pipe\nsvr, has a NULL DACL allowing any authenticated user to interact with the service. It contains a stacked based buffer overflow as a result of a memmove operation. Note the slight spelling differences: the executable is 'nvvsvc.exe', the service name is 'nvsvc', and the named pipe is 'nsvr'. This exploit automatically targets nvvsvc.exe versions dated Nov 3 2011, Aug 30 2012, and Dec 1 2012. It has been tested on Windows 7 64-bit against nvvsvc.exe dated Dec 1 2012.
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