Implementation of the CAN-FD protocol in the fuzzing tool beSTORM

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With the growth of ECUs that are mounted in automobiles, the transmission capacity of Controller Area Network (CAN), which is currently used by most on-vehicle networks, is becoming insufficient, and therefore CAN With Flexible Data Rate (CAN-FD), presented by Bosch GmbH, is viewed as a nextgeneration standard. Recently, the number of attacks on ECUs connected to CAN has been increasing, and from the viewpoint of CAN security there has been much discussion of safety. However, with regard to CAN-FD, which is an expansion of CAN, although a discussion of safety is needed, that has hardly happened. This paper reports on an implementation that uses the generic fuzzing tool beSTORM to investigate the vulnerability of the CAN-FD protocol. We also aim at practical application by measuring the transmission time for beSTORM test data and by estimating the time required for CAN-FD fuzzing tests.

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