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Check: RHEL-08-010152

RHEL 8 STIG: RHEL-08-010152 (in versions v2 r1 through v1 r3)

Title

RHEL 8 operating systems must require authentication upon booting into emergency mode. (Cat II impact)

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 emergency mode with the following command: $ sudo grep sulogin-shell /usr/lib/systemd/system/emergency.service ExecStart=-/usr/lib/systemd/systemd-sulogin-shell emergency If the "ExecStart" line is configured for anything other than "/usr/lib/systemd/systemd-sulogin-shell emergency", commented out, or missing, this is a finding.

Fix Text

Configure the system to require authentication upon booting into emergency mode by adding the following line to the "/usr/lib/systemd/system/emergency.service" file. ExecStart=-/usr/lib/systemd/systemd-sulogin-shell emergency

Additional Identifiers

Rule ID: SV-244523r1017329_rule

Vulnerability ID: V-244523

Group Title: SRG-OS-000080-GPOS-00048

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000213	Enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Controls

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

Number	Title
AC-3	Access Enforcement