SMB File Sharing must be disabled unless required.

From Apple OS X 10.10 (Yosemite) Workstation Security Technical Implementation Guide

Associated with: CCI-000381

SV-73997r2_rule SMB File Sharing must be disabled unless required.

Vulnerability discussion

File Sharing is usually non-essential and must be disabled if not required. Enabling any service increases the attack surface for an intruder. By disabling unnecessary services, the attack surface is minimized.

Check content

If SMB File Sharing is required, this is not applicable. To check if the 'SMB File Sharing' service is disabled, use the following command: sudo launchctl print-disabled system | grep com.apple.smbd If the results do not show the following: "com.apple.smbd" => true this is a finding.

Fix text

To disable the 'SMB File Sharing' service, run the following command: sudo launchctl disable system/com.apple.smbd The system may need to be restarted for the update to take effect.

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