‘Stapler’ is the second machine from Vulnhub.com that I looked at as part of my OSCP preparations. This one just requires good enumeration skills and leaving no stone unturned. This is a lesson I learned after discovering two different ways for privesc. I had been reading other writeups on this box and then I learned a third way of compromising this machine. I obviously hadn’t read notes posted on Vulnhub by the author, and neither did I pay FULL attention to the output from my enumeration tools.