The TOSS 5 /etc/passwd- file must be owned by root.

The "/etc/passwd-" file is a backup file of "/etc/passwd", and as such, contains information about the users that are configured on the system. Protecting this file is critical for system security.

Verify the ownership of the "/etc/passwd-" file using the following command:

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

root /etc/passwd-

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

Change the owner of the file /etc/passwd- to root using the following command:

$ sudo chown root /etc/passwd-