macOS
TMA-MACOS14-4.1
Ensure Bonjour Advertising Services Is Disabled
Descripción
Bonjour is an auto-discovery mechanism for TCP/IP devices which enumerates devices and services within a local subnet. DNS on macOS is integrated with Bonjour and should not be turned off, but the Bonjour advertising service can be disabled. Bonjour can simplify device discovery from an internal rogue or compromised host. An attacker could use Bonjour's multicast DNS feature to discover a vulnerable or poorly- configured service or additional information to aid a targeted attack. Implementing this control disables the continuous broadcasting of "I'm here!" messages. Typical end-user endpoints should not have to advertise services to other computers. This setting does not stop the computer from sending out service discovery messages when looking for services on an internal subnet, if the computer is looking for a printer or server and using service discovery. To block all Bonjour traff...
Cómo se verifica
Método de auditoría: Comando de shell
/usr/bin/osascript -l JavaScript <<'EOS'
$.NSUserDefaults.alloc.initWithSuiteName('com.apple.mDNSResponder').objectForKey('NoMulticastAdvertisements').js
EOS- Salida esperada
true
Cómo se corrige
Método de corrección: Guía o parche de infraestructura
Terminal Method: Run the following command to disable Bonjour Advertising services: % /usr/bin/sudo /usr/bin/defaults write /Library/Preferences/com.apple.mDNSResponder.plist NoMulticastAdvertisements -bool true Profile Method: Create or edit a configuration profile with the following information: 1. The PayloadType string is com.apple.mDNSResponder 2. The key to include is NoMulticastAdvertisements
Propiedades
- Sistemas operativos
- macos-14
- Etiquetas
- macossonoma
- Referencia
- CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 4.1 Ensure Bonjour Advertising Services Is Disabled
Verificar este host
Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.
tmaegis scan --target macos --level 2