Reference : Improving Security for Time-Triggered Real-Time Systems against Timing Inference Base...
Scientific congresses, symposiums and conference proceedings : Unpublished conference
Engineering, computing & technology : Computer science
Improving Security for Time-Triggered Real-Time Systems against Timing Inference Based Attacks by Schedule Obfuscation
Krüger, Kristin [Technische Universit¨at Kaiserslautern, Germany]
Fohler, Gerhard [Technische Universit¨at Kaiserslautern, Germany]
Volp, Marcus mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Work-in-Progress Proceedings ECRTS'17
27 - 30 June 2017
[en] Covert timing channels in real-time systems allow
adversaries to not only exfiltrate application secrets but also to
mount timing inference based attacks. Much effort has been put
into improving real-time system predictability with the additional
benefit of reducing the former class of confidentiality attacks.
However, the more predictable the system behaves, the easier timing
inference based attacks become. Time-triggered scheduling
is particularly vulnerable to these types of attacks due to offline
constructed tables that are scheduled with clock synchronization
and OS-timer predictability. In this paper, we obfuscate timetriggered
scheduling to complicate timing inference based attacks
while maintaining strong protection against exfiltration attacks.
Researchers ; Students

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