macOS
TMA-MACOS14-2.3.3.1
Ensure Screen Sharing Is Disabled
Description
Screen Sharing allows a computer to connect to another computer on a network and display the computer’s screen. While sharing the computer’s screen, the user can control what happens on that computer, such as opening documents or applications, opening, moving, or closing windows, and even shutting down the computer. While mature administration and management does not use graphical connections for standard maintenance, most help desks have capabilities to assist users in performing their work when they have technical issues and need support. Help desks use graphical remote tools to understand what the user sees and assist them so they can get back to work. For macOS, some of these remote capabilities can use Apple's OS tools. Control is therefore not meant to prohibit the use of a just-in-time graphical view from authorized personnel with authentication controls. Sharing should not be...
How it is checked
Audit method: Shell command
out=$(/bin/launchctl list 2>/dev/null) || exit 1
printf '%s\n' "$out" | /usr/bin/grep -cE 'com.apple.screensharing$' || true- Expected output
0
How it is fixed
Fix method: Guidance or infrastructure patch
Graphical Method: Perform the following steps to disable Screen Sharing: 1. Open System Settings 2. Select General 3. Select Sharing 4. Set Screen Sharing to disabled Terminal Method: Run the following command to turn off Screen Sharing: % /usr/bin/sudo /bin/launchctl disable system/com.apple.screensharing % /usr/bin/sudo /bin/launchctl bootout system/com.apple.screensharing
Properties
- Operating systems
- macos-14
- Tags
- macossonoma
- Reference
- CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 2.3.3.1 Ensure Screen Sharing Is Disabled
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
tmaegis scan --target macos