Title

The system must require authentication upon booting into single-user and maintenance modes. (Cat II impact)

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

This can be checked in the /etc/rcS file (on Solaris 5.X systems) to check if the system runs sulogin, or an equivalent, when booting into single-user mode: # more /etc/rcS/sulogin Alternatively: # grep sulogin /etc/rcS NOTE: The file may be in /sbin. The last resort, if it is not a production system, is to boot the system to single-user mode: # shutdown -g0 -is -y If the system enters single-user mode and no password is required, this is a finding. NOTE: This is a default on Solaris 5.5.1 and later.

Fix Text

Edit /etc/rcS and set sulogin be run for single-user mode. NOTE: This is a default on Solaris 5.5.1 and later.

Additional Identifiers

Rule ID: SV-36754r1_rule

Vulnerability ID: V-756

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.