Vulnerability Discussion

Gatekeeper must be enabled.

Gatekeeper is a security feature that ensures applications are digitally signed by an Apple-issued
certificate before they are permitted to run. Digital signatures allow the macOS host to verify that the
application has not been modified by a malicious third party.

Administrator users will still have the option to override these settings on a case-by-case basis.

Check

Verify the macOS system is configured to enable gatekeeper with the following command:

/usr/sbin/spctl --status | /usr/bin/grep -c "assessments enabled"

If the result is not "1", this is a finding.

Fix

Configure the macOS system to enable gatekeeper with the following
command:

/usr/sbin/spctl --global-enable