Check: AOSX-12-000055
Apple OS X 10.12 STIG:
AOSX-12-000055
(in versions v1 r6 through v1 r1)
Title
The OS X system must enforce requirements for remote connections to the information system. (Cat II impact)
Discussion
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.
Check Content
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
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.
Additional Identifiers
Rule ID: SV-90651r1_rule
Vulnerability ID: V-75963
Group Title: SRG-OS-000480-GPOS-00227
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000366 |
The organization implements the security configuration settings. |
Controls
Number | Title |
---|---|
CM-6 |
Configuration Settings |