macOS 15 - Sequoia

The macOS system must disable Internet Sharing

STIG ID: APPL-15-002007 | SRG: SRG-OS-000095-GPOS-00049 | Severity: Medium | CCI: CCI-000381 | Vulnerability ID: V-268483

Description

If the system does not require Internet Sharing, support for it is nonessential and must be disabled.The information system must be configured to provide only essential capabilities. Disabling Internet Sharing helps prevent unauthorized connection of devices, transfer of information, and tunneling.

Check

C-268483r1034389_chk

Verify the macOS system is configured to disable Internet Sharing with the following command:/usr/bin/osascript -l JavaScript << EOS$.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\.objectForKey('forceInternetSharingOff').jsEOSIf the result is not "true", this is a finding.

Fix

F-72414r1034388_fix

Configure the macOS system to disable Internet Sharing by installing the "com.apple.MCX" configuration profile.