VulnHub – Sokar Challenge
Just some quick background, VulnHub provides vulnerable system images, to prep penetration testers and vulnerability researchers. Often times, the images can be presented as a challenge.
For VulnHub’s 2nd anniversary, they have a challenge called “Sokar” which, as of this writing, you have 2 more days, left to complete. You setup the image in VirtualBox or VMWare, and attempt to exploit it, in order go get the root flag.