Linux Restrict Execution of /usr/sbin/userhelper to Console Users

To restrict the execution of /usr/sbin/userhelper to console users on a Linux system, you can use the consolehelper utility.

Here is an example of how to do this:

1. Create a file called /etc/security/console.apps/userhelper with the following content:

/usr/sbin/userhelper

2. Set the permissions of the file to be readable only by the root user:

chmod 600 /etc/security/console.apps/userhelper

3. Edit the /etc/pam.d/su file and add the following line to the top of the file:

auth       required   pam_console.so

This will restrict the execution of /usr/sbin/userhelper to console users only. Any users attempting to execute /usr/sbin/userhelper from a remote login or over a network will be denied access.

Note: This process may vary slightly depending on the specific Linux distribution you are using. You may need to modify the PAM configuration or use a different utility to restrict access to /usr/sbin/userhelper on your system.