Title

The root account must be the only account with GID of 0. (Cat II impact)

Discussion

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

Check Content

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.

Fix Text

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

Additional Identifiers

Rule ID: SV-216201r603268_rule

Vulnerability ID: V-216201

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.