The root account must be the only account with GID of 0.

All accounts with a GID of 0 have root group privileges and must be limited to the group account only.

Identify any users with GID of 0.

# awk -F: '$4 == 0' /etc/passwd # awk -F: '$3 == 0' /etc/group Confirm the only account with a group id of 0 is root.

If the root account is not the only account with GID of 0, this is a finding.

The root role is required.

Change the default GID of non-root accounts to a valid GID other than 0.