Is Your EV Charging Station Protected? New Safety Vulnerabilities Uncovered

Feb 03, 2023Ravie LakshmananAutomotive Safety / Vulnerability

EV Charging Station

Two new safety weaknesses found in a number of electrical automobile (EV) charging techniques could possibly be exploited to remotely shut down charging stations and even expose them to information and vitality theft.

The findings, which come from Israel-based SaiFlow, as soon as once more exhibit the potential dangers dealing with the EV charging infrastructure.

The problems have been recognized in model 1.6J of the Open Cost Level Protocol (OCPP) normal that makes use of WebSockets for communication between EV charging stations and the Charging Station Administration System (CSMS) suppliers. The present model of OCPP is 2.0.1.

“The OCPP normal would not outline how a CSMS ought to settle for new connections from a cost level when there may be already an energetic connection,” SaiFlow researchers Lionel Richard Saposnik and Doron Porat said.

“The dearth of a transparent guideline for a number of energetic connections will be exploited by attackers to disrupt and hijack the connection between the cost level and the CSMS.”

This additionally signifies that a cyber attacker might spoof a connection from a legitimate charger to its CSMS supplier when it is already related, successfully resulting in both of the 2 eventualities:

  • A denial-of-service (DoS) situation that arises when the CSMS supplier closes the unique the WebSocket connection when a brand new connection is established
  • Data theft that stems from protecting the 2 connections alive however returning responses to the “new” rogue connection, allowing the adversary to entry the driving force’s private information, bank card particulars, and CSMS credentials.

The forging is made potential owing to the truth that CSMS suppliers are configured to solely depend on the charging level id for authentication.

“Combining the mishandling of recent connections with the weak OCPP authentication and chargers identities coverage might result in an unlimited Distributed DoS (DDoS) assault on the [Electric Vehicle Supply Equipment] community,” the researchers stated.

EV Charging Station

OCPP 2.0.1 remediates the weak authentication coverage by requiring charging level credentials, thereby closing out the loophole. That stated, mitigations for when there are multiple connection from a single charging level ought to necessitate validating the connections by sending a ping or a heartbeat request, SaiFlow famous.

“If one of many connections is just not responsive, the CSMS ought to get rid of it,” the researchers defined. “If each connections are responsive, the operator ought to be capable to get rid of the malicious connection straight or through a CSMS-integrated cybersecurity module.”

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