The FTP proxy server in Apple AirPort Express, AirPort Extreme, and Time Capsule with firmware 7.5 does not restrict the IP address and port specified in a PORT command from a client, which allows remote attackers to leverage intranet FTP servers for arbitrary TCP forwarding via a crafted PORT command.
| Software | From | Fixed in |
|---|---|---|
| apple / time_capsule | 7.5 | 7.5.x |
| apple / airport_extreme | 7.5 | 7.5.x |
| apple / airport_express | 7.5 | 7.5.x |