This vulnerability occurs when a WebSocket endpoint does not enforce
proper authentication mechanisms, allowing unauthorized users to
establish connections. As a result, attackers can exploit this weakness
to gain unauthorized access to sensitive data or perform unauthorized
actions. Given that no authentication is required, this can lead to
privilege escalation and potentially compromise the security of the
entire system.
EVMAPA informed CISA some of their charging stations do not allow
changes to the authorization key using the Open Charge Point Protocol
(OCPP). Currently, charge point operators have the option to connect
stations using WebSocket Secure (WSS), and EVMAPA connects stations they
supply via their own VPN. For OCPP 2.x and newer stations, EVMAPA plans
to implement BASIC authorization control.