From what I understand, this allows arbitrary command execution. So, an attacker can specify a string of text that something on the affected system will just plop into a command line and execute.

…the one on the left or the one on the right?

Ok, so my boring take on this: I think the word privilege is overused. In my mind there is a basic level of human decency everyone should be treated with. If you are treated above and beyond that, you have some privilege. Situations like the one mentioned in this post (to my mind) don’t speak to a lack of privilege, but to the presence of oppression.

Laws for thee, not for me.