Exploitation of IMS in absence of confidentiality and integrity protection

IP Multimedia Subsystem (IMS) offers many multimedia services to any IP-based access network, such as LTE or DSL. In addition to VoLTE, IMS adds service provider flexibility, better QoS and charging control to the 4th generation of mobile networks. IMS exchanges SIP messages with its users or other IMS and usually these communications are secured by TLS or IPSec. But if an attacker manages to break the confidentiality and the integrity with IMS, he would find it vulnerable to several attacks. Continue reading “Exploitation of IMS in absence of confidentiality and integrity protection”

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Telco Research 2015

Hello and a happy new year 2015 to everybody!

As follow up of our 2014 talk “LTE vs. Darwin” I want to inform you about our telco research in 2015. We are currently dealing with the so called IP Multimedia Subsystem (IMS), which handles the call and media logic of 4G telecommunication networks. This network part provides functions like VoIP (or VoLTE) and takes care of the interconnection to other call or media related networks.
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