Rooted, thank you for all the help from my dear friends.
Hints:
For initial foothold, enumerate the machine. May help if you can dump the whole set using some tool by internetwache and try to create a script to exploit against it.
For getting the user after the initial foothold, reach a bit on the db administration on how to add admin users.
For getting the root shell - this is ironically the easiest part, just google.