I have a VPN that I can manage though WHM.
I tried to disable the listed dangerous functions, but it didn't seem to work.
I went to cPanel --> MultiPHP INI Editor --> Editor Mode --> Home Directory and added this to the bottom:
disable_functions = exec, system, passthru, popen, proc_open, shell_exec
Then back to WHM --> Terminal --> service httpd restart
These functions still are listed as enabled.
I'm sure I did something wrong, suggestions?