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The macOS system must be configured to disable password forwarding for FileVault2.


Overview

Finding ID Version Rule ID IA Controls Severity
V-230763 APPL-11-000033 SV-230763r855676_rule Medium
Description
When "FileVault" and Multifactor Authentication are configured on the operating system, a dedicated user must be configured to ensure that the implemented Multifactor Authentication rules are enforced. If a dedicated user is not configured to decrypt the hard disk upon startup, the system will allow a user to bypass Multifactor Authentication rules during initial startup and first login.
STIG Date
Apple macOS 11 (Big Sur) Security Technical Implementation Guide 2022-11-18

Details

Check Text ( C-33708r607176_chk )
Verify that password forwarding has been disabled on the system:

# /usr/sbin/system_profiler SPConfigurationProfileDataType | /usr/bin/grep "DisableFDEAutoLogin"

DisableFDEAutologin = 1;

If "DisableFDEAutologin" is not set to a value of "1", this is a finding.
Fix Text (F-33681r607177_fix)
This setting is enforced using the "Login Window Policy" configuration profile.