RHEL 9 /etc/gshadow file must be owned by root.

The "/etc/gshadow" file contains group password hashes. Protection of this file is critical for system security.

Verify the ownership of the "/etc/gshadow" file with the following command:

$ sudo stat -c "%U %n" /etc/gshadow 

root /etc/gshadow

If "/etc/gshadow" file does not have an owner of "root", this is a finding.

Change the owner of the file /etc/gshadow to root by running the following command:

$ sudo chown root /etc/gshadow