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V-230236

CAT II (Medium)

RHEL 8 operating systems must require authentication upon booting into rescue mode.

Rule ID

SV-230236r1137691_rule

STIG

Red Hat Enterprise Linux 8 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-000213

Discussion

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

Check Content

Check to see if the system requires authentication for rescue mode with the following command:

$ sudo grep sulogin-shell /usr/lib/systemd/system/rescue.service

ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue

If the "ExecStart" line is configured for anything other than "/usr/lib/systemd/systemd-sulogin-shell rescue", commented out, or missing, this is a finding.

Fix Text

Configure the system to require authentication upon booting into rescue mode by adding the following line to the "/usr/lib/systemd/system/rescue.service" file.

ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue