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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-58265	AOSX-09-000055	SV-72695r1_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 10.9 (Mavericks) Workstation Security Technical Implementation Guide	2017-01-05

Details

Check Text ( C-59089r1_chk )
To check if screen sharing is disabled, run the following command: sudo /usr/libexec/PlistBuddy -c 'print com.apple.screensharing:Disabled' /var/db/launchd.db/com.apple.launchd/overrides.plist If the returned value isn't 'true' or doesn't exist, this is a finding.

Fix Text (F-63579r1_fix)
To disable screen sharing, run the following command: sudo defaults write /private/var/db/launchd.db/com.apple.launchd/overrides.plist 'com.apple.screensharing' -dict Disabled -bool true