Missing IPsec Integrity Protection for IMS SIP Signaling in Verizon VoLTE Deployments

Overview VoLTE deployments on Verizon’s IMS network have operated without negotiated SIP integrity protection. In observed test conditions, SIP signaling—including registration, call setup, and messaging—traveled without IPsec ESP encapsulation and without SIP Security Agreement headers, exposing...

Verizon VoLTE security vulnerability

Verizon VoLTE is a high-definition voice communication service provided by Verizon based on 4G LTE networks. There is a security vulnerability in Verizon VoLTE, which stems from the fact that SIP signaling does not use IPsec integrity protection. This vulnerability may allow attackers to compromi...