Phoenix Contact QUINT4-UPS/24DC/24DC/20/EIP vulnerabilities

The websocket handler is vulnerable to a denial of service condition. An unauthenticated remote attacker can send a crafted websocket message to trigger the issue without affecting the core functionality.

The webserver is vulnerable to a denial of service condition. An unauthenticated remote attacker can craft a special GET request with an over-long content-length to trigger the issue without affecting the core functionality.

An unauthenticated remote attacker (MITM) can intercept the websocket messages to gain access to the login credentials for the Webfrontend.

An unauthanticated remote attacker can perform a DoS of the Modbus service by sending a specific function and sub-function code without affecting the core functionality.