I have some program called foo that needs root privileges when it executes. foo needs to be able to be run by any user and can be located at any path. The reason this program can be at any path is because our company is developing program foo and each user may have a personal version of the program in some personal directory while they work on it.
My question is this, what is the most secure way to handle this? I have been researching the sudoers file and have basically 2 ideas.
1.) List all paths the program can be at in the sudoers file. This is problematic because it requires frequent editing of the sudoers list and also still poses a security risk since non root users will own their individual copy of foo and could copy some system program over foo and then use it as root.
2.) Write a script called start_foo which performs some input validation on the passed program such as size and name and then starts the passed in foo. start_foo could live in /usr/bin and owned by root but runable by anyone. This option still includes the security hole of being able to write over the users foo program with another root requiring program but hopefully the size check would catch some malicious cases.
Is there a "cannonical" way to solve this problem I haven't found or thought of? If not which of the above or possibly other solution is the best way to handle the problem?