All TOSS 5 interactive users must have a primary group that exists.

If a user is assigned the Group Identifier (GID) of a group that does not exist on the system, and a group with the GID is subsequently created, the user may have unintended rights to any files associated with the group.

Verify all TOSS 5 interactive users have a valid GID using the following command:

$ sudo pwck -qr 

If the system has any interactive users with duplicate GIDs, this is a finding.

Configure the system so all GIDs referenced in "/etc/passwd" are defined in "/etc/group".

Edit the file "/etc/passwd" and ensure every user's GID is a valid GID.