The macOS system must retain the session lock until the user reestablishes access using established identification and authentication procedures.

STIG ID: APPL-13-000002  |  SRG: SRG-OS-000028-GPOS-00009 |  Severity: medium |  CCI: CCI-000056 |  Vulnerability Id: V-257143

Vulnerability Discussion

Users must be prompted to enter their passwords when unlocking the screen saver. The screen saver acts as a session lock and prevents unauthorized users from accessing the current user's account.

Check

Verify the macOS system is configured to prompt users to enter a password to unlock the screen saver with the following command:

/usr/sbin/system_profiler SPConfigurationProfileDataType | /usr/bin/grep -w "askForPassword"

askForPassword = 1;

If there is no result, or if "askForPassword" is not set to "1", this is a finding.

Fix

Configure the macOS system to prompt users to enter a password to unlock the screen saver by installing the "Login Window Policy" configuration profile.
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