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The system must not permit root logins using remote access programs such as ssh.


Overview

Finding ID Version Rule ID IA Controls Severity
V-50799 OL6-00-000237 SV-65005r1_rule Medium
Description
Permitting direct root login reduces auditable information about who ran privileged commands on the system and also allows direct attack attempts on root's password.
STIG Date
Oracle Linux 6 Security Technical Implementation Guide 2016-12-20

Details

Check Text ( C-53271r1_chk )
To determine how the SSH daemon's "PermitRootLogin" option is set, run the following command:

# grep -i PermitRootLogin /etc/ssh/sshd_config

If a line indicating "no" is returned, then the required value is set.
If the required value is not set, this is a finding.
Fix Text (F-55593r1_fix)
The root user should never be allowed to log in to a system directly over a network. To disable root login via SSH, add or correct the following line in "/etc/ssh/sshd_config":

PermitRootLogin no