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Green Lights Forever: Analyzing the Security of Traffic Infrastructure

Monday, July 28, 2014 - 3:45pm
Authors: 

Branden Ghena, William Beyer, Allen Hillaker, Jonathan Pevarnek, and J. Alex Halderman, University of Michigan

Abstract: 

The safety critical nature of traffic infrastructure requires that it be secure against computer-based attacks, but this is not always the case. We investigate a networked traffic signal system currently deployed in the United States and discover a number of security flaws that exist due to systemic failures by the designers. We leverage these flaws to create attacks which gain control of the system, and we successfully demonstrate them on the deployment in coordination with authorities. Our attacks show that an adversary can control traffic infrastructure to cause disruption, degrade safety, or gain an unfair advantage. We make recommendations on how to improve existing systems and discuss the lessons learned for embedded systems security in general.

Branden Ghena, University of Michigan

William Beyer, University of Michigan

Allen Hillaker, University of Michigan

Jonathan Pevarnek, University of Michigan

J. Alex Halderman, University of Michigan

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BibTeX
@inproceedings {185136,
author = {Branden Ghena and William Beyer and Allen Hillaker and Jonathan Pevarnek and J. Alex Halderman},
title = {Green Lights Forever: Analyzing the Security of Traffic Infrastructure},
booktitle = {8th USENIX Workshop on Offensive Technologies (WOOT 14)},
year = {2014},
address = {San Diego, CA},
url = {https://www.usenix.org/conference/woot14/workshop-program/presentation/ghena},
publisher = {USENIX Association},
month = aug,
}
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