The system must prevent the root account from logging in from serial consoles.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
RHEL-06-000028	RHEL-06-000028	RHEL-06-000028_rule		Low

Description
Preventing direct root login to serial port interfaces helps ensure accountability for actions taken on the systems using the root account.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2013-02-05

Details

Check Text ( C-RHEL-06-000028_chk )
To check for serial port entries which permit root login, run the following command: # grep '^ttyS[0-9]' /etc/securetty If any output is returned, then root login over serial ports is permitted. If root login over serial ports is permitted, this is a finding.

Fix Text (F-RHEL-06-000028_fix)
To restrict root logins on serial ports, ensure lines of this form do not appear in "/etc/securetty": ttyS0 ttyS1