PhasorSec: Protocol Security Filters for Wide Area Measurement Systems

P. Anantharaman, K. Palani, R. Brantley, G. Brown, S. Bratus, S. W. Smith


To appear in Proceedings of IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids, 29 Oct - 1 Nov 2018, Aalborg, Denmark


The syntactic complexity of SCADA/ICS protocols along with the emphasis on availability has led to the increase in the prevalence of input-handling vulnerabilities in SCADA/ICS protocols. We present PhasorSec, a methodology to produce hardened implementations of the C37.118 protocol in Wide Area Measurement Systems. PhasorSec reduces latency by outsourcing input validation to a separate network filter that exhaustively validates C37.118 packets with respect to the specification of the protocol. We evaluate PhasorSec in terms of CPU-time and development effort and demonstrate its resilience to the state-ofthe-art AFL fuzzer. Abstract is not available.

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