Contiki-NG tinyDTLS Epoch Number Reuse

An issue was discovered in Contiki-NG tinyDTLS versions through 2018-08-30. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).

application attackers clients connected data dtls issue lifetime reuse segment sensitive servers tcp vulnerability