Haiwell IoT Cloud HMI Gateway OS Command Injection

A critical OS command injection vulnerability has been identified in the
Haiwell IoT Cloud HMI Gateway product. The vulnerability exists in the
Net Check feature accessible via the /setting endpoint. The cmdPing
Socket.io event fails to properly sanitize user-supplied input before
passing it to the underlying operating system, allowing an attacker to
inject and execute arbitrary OS commands with root privileges.