The operating system must enforce requirements for remote connections to the information system.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-67493	AOSX-11-000055	SV-81983r1_rule		Medium

Description
The Screen Sharing feature allows remote users to view or control the desktop of the current user. A malicious user can take advantage of screen sharing to gain full access to the system remotely, either with stolen credentials or by guessing the username and password. Disabling Screen Sharing mitigates this risk.

STIG	Date
Apple OS X 10.11 Security Technical Implementation Guide	2018-01-04

Details

Check Text ( C-68057r1_chk )
To check if the Screen Sharing service is disabled, use the following command: /usr/bin/sudo /bin/launchctl print-disabled system | /usr/bin/grep com.apple.screensharing If the results do not show the following, this is a finding. "com.apple.screensharing" => true

Fix Text (F-73607r1_fix)
To disable the Screen Sharing service, run the following command: /usr/bin/sudo /bin/launchctl disable system/com.apple.screensharing The system may need to be restarted for the update to take effect.