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os_authenticated_root_enable Enable Authenticated Root

NIST macOS Security Compliance Project Sequoia Guidance, Revision 4.0 (be5491f)
All changes in this version
first version loaded macOS

Title

Enable Authenticated Root

Control

/usr/libexec/mdmclient QuerySecurityInfo 2>/dev/null | /usr/bin/grep -c "AuthenticatedRootVolumeEnabled = 1;"

Discussion

Authenticated Root _MUST_ be enabled.

When Authenticated Root is enabled the macOS is booted from a signed volume that is cryptographically protected to prevent tampering with the system volume.

NOTE: Authenticated Root is enabled by default on macOS systems.

WARNING: If more than one partition with macOS is detected, the csrutil command will hang awaiting input.

Related controls

ac-3, cm-5, ma-4.1, sc-34, si-7, si-7.6

Fix

[source,bash]
----
/usr/bin/csrutil authenticated-root enable
----
NOTE: To re-enable "Authenticated Root", boot the affected system into "Recovery" mode, launch "Terminal" from the "Utilities" menu, and run the command.