I have an ACS 4.0 device. In the shell command authorization set section, you have the ability to define permitted or denied commands (show) and arguments (running-config). I am limiting users to a specific set of commands. One of the commands is 'exit'. To my knowledge, 'exit' does not have any arguments. If I add 'exit' as a permitted command but enter nothing for the argument section, I get authorization failed at the router. If I select 'permit unmatched args' (for exit), authorization is successful. I would prefer to not select 'permit unmatched args'. Is there an argument for 'exit' that I am not aware of?
I have this problem too.