A Novel Denial of Service Vulnerability in Long Term Evolution Cellular Networks
- James Long, Naval Postgraduate School, Monterey, California, United States
- John Roth,
AbstractCurrently many cellular networks operate using the Long Term Evolution (LTE) protocol. Therefore, most mobile subscribers interact with LTE on a daily basis, and thus are affected by the security standards and mechanisms it implements. Here, we propose a vulnerability within the LTE protocol: the mobility management control signaling, which dictates how a user equipment (UE) synchronizes with an enhanced Node-B (eNodeB) to prevent intersymbol interference. Presented are the implications and the overall effects on the bit error rate (BER) of falsified signaling which forces a UE to incorrectly advance or delay its uplink timing. Specifically, we derive a lower bound on the BER for UE that is subjected to the aforementioned signaling. Our simulation results show that a non-zero BER can be guaranteed regardless of noise conditions. Finally, we propose encryption of this signaling to prevent such an attack.
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