Vulnerability Discussion

Hot corners must be disabled.

The information system conceals, via the session lock, information previously visible on the display
with a publicly viewable image. Although hot corners can be used to initiate a session lock or to launch
useful applications, they can also be configured to disable an automatic session lock from initiating.
Such a configuration introduces the risk that a user might forget to manually lock the screen before
stepping away from the computer.

Check

Verify the macOS system is configured to disable hot corners with the following command:

/usr/bin/profiles -P -o stdout | /usr/bin/grep -Ec '"wvous-bl-corner" = 0|"wvous-br-corner" =
0|"wvous-tl-corner" = 0|"wvous-tr-corner" = 0'

If the result is not "4", this is a finding.

Fix

Configure the macOS system to disable hot corners by installing the
"com.apple.ManagedClient.preferences" configuration profile.