Title

The macOS system must disable the guest account. (Cat II impact)

Discussion

Guest access must be disabled. Turning off guest access prevents anonymous users from accessing files.

Check Content

Verify the macOS system is configured to disable the guest account with the following command: /usr/bin/osascript -l JavaScript << EOS function run() { let pref1 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\ .objectForKey('DisableGuestAccount')) let pref2 = ObjC.unwrap($.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\ .objectForKey('EnableGuestAccount')) if ( pref1 == true && pref2 == false ) { return("true") } else { return("false") } } EOS If the result is not "true", this is a finding.

Fix Text

Configure the macOS system to disable the guest account by installing the "com.apple.MCX" configuration profile.

Additional Identifiers

Rule ID: SV-277119r1148809_rule

Vulnerability ID: V-277119

Group Title: SRG-OS-000364-GPOS-00151

Expert Comments

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