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The ability to use corners to disable the screen saver must be disabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-51475 OSX8-00-01095 SV-65685r1_rule Medium
Description
The ability to use corners to disable the screen saver must be disabled.
STIG Date
Apple OS X 10.8 (Mountain Lion) Workstation STIG 2015-02-10

Details

Check Text ( C-53815r2_chk )
To check if any of the hot corners are configured to disable the screen saver run the following command for the logged in user:

system_profiler SPConfigurationProfileDataType | grep wvous

There should be 4 results (wvous-bl-corner, wvous-br-corner, wvous-tl-corner, wvous-tr-corner). If any of them are not defined to be "1", this is a finding.
Fix Text (F-56277r2_fix)
Open up System Preferences->Desktop&Screen Saver, and open Hot Corners. Make sure none of the corners are defined to "Disable Screen Saver". This can be enforced using a configuration profile or managed preferences.