The OS X system must require individuals to be authenticated with an individual authenticator prior to using a group authenticator.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-76071	AOSX-12-000565	SV-90759r2_rule		Medium

Description
Administrator users must never log in directly as root. To assure individual accountability and prevent unauthorized access, logging in as root over a remote connection must be disabled. Administrators should only run commands as root after first authenticating with their individual user names and passwords.

STIG	Date
Apple OS X 10.12 Security Technical Implementation Guide	2018-12-24

Details

Check Text ( C-75755r1_chk )
To check if SSH has root logins enabled, run the following command: /usr/bin/sudo /usr/bin/grep ^PermitRootLogin /etc/ssh/sshd_config If there is no result, or the result is set to "yes", this is a finding.

Fix Text (F-82709r2_fix)
To ensure that "PermitRootLogin" is disabled by sshd, run the following command: /usr/bin/sudo /usr/bin/sed -i.bak ‘' 's/^[\#]*PermitRootLogin.*/PermitRootLogin no/' /etc/ssh/sshd_config