The system must prevent the root account from directly logging in except from the system console.

From SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Associated with: CCI-000770

SV-44913r1_rule The system must prevent the root account from directly logging in except from the system console.

Vulnerability discussion

Limiting the root account direct logins to only system consoles protects the root account from direct unauthorized access from a non-console device.

Check content

Check /etc/securetty # more /etc/securetty If the file does not exist, or contains more than "console" or a single "tty" device this is a finding.

Fix text

Create if needed and set the contents of /etc/securetty to a "console" or "tty" device. # echo console > /etc/securetty or # echo ttyS0 > /etc/securetty

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