Abstract
Modern vehicles are susceptible to cybersecurity attacks due to the complexity of their electronics architecture and a progressive integration of connectivity technologies. A promising solution to resolve cybersecurity issues is Over-The-Air (OTA) updates. Recently, Uptane has been introduced and is currently considered as the de facto security standard for automotive OTA system solutions. To ensure that a system, Uptane, can deliver updates to secure a vehicle, the system itself must be sufficiently secure as to not become an attack vector itself. To this end, we present a model-based security testing approach to OTA updates for automotive vehicles. This is done by modelling the OTA update system and the Dolev-Yao attackers in Communicating Sequential Processes (CSP). The combined models can be verified to generate security test cases and provide a comprehensive evaluation of attackers on the Uptane system.
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