I'm doing some exercises in the lab. My vuln. scanner detects MS12-020 on a few machines.

The report indicates that this could be exploited to allow the execution of code remotely.

To me this would mean that there must be some way to upload a persistence module to it (if I'm wrong forgive my naivete, I'm only second year student).

However the only exploit available on metasploit performs a DoS by crashing the system. So far Google has only shown me results that do the same (DoS).

Can anything juicier be done with this vulnerability? Is there an exploit that actually allows the execution of some arbitrary code on the machine or is it only possible to make it crash?