The system must require authentication upon booting into single-user and maintenance modes.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000213

SV-63087r2_rule The system must require authentication upon booting into single-user and maintenance modes.

Vulnerability discussion

If the system does not require valid root authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system.

Check content

Check if the system requires a password for entering single-user mode. # grep ':S:' /etc/inittab If /sbin/sulogin is not listed, this is a finding.

Fix text

Edit /etc/inittab and set sulogin to run in single-user mode. Example line in /etc/inittab: ~:S:wait:/sbin/sulogin Note: The first field in the /etc/inittab line may be any sequence of 1-4 characters.

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