Bedrohungslage fahrzeuginterner Kommunikationsnetzwerke und Bus-Systeme

The increasing number of connected cars interacting with each other and the environment has revealed a variety of vulnerabilities. These vulnerabilities made it possible to hack car internal communication networks and protocols. This paper gives an overview of common car communication and provides certain attack scenarios of automotive systems related IT security incidents. These findings are gathered in a level zero threat model. This model covers the attack surface of a modern car and serves as a base to evaluate new and future-oriented security features. Combined with basic car network and protocol knowledge, this paper tries to address the demand of lightweight cryptographic primitives and common IT security mechanisms to improve the protection of automotive related embedded communication against external threats.

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