3GPP TS (click spec number to see fileserver directory for this spec) Work item which gave rise to this spec: (click WI code to see Work Item details in . Encoding Messages Other Than TSMsg_PDU. .. the Methodology section, there are several PDU types defined for GERAN RRC messages (3GPP TS. The 3GPP scenarios for transition, described in [TR], can be Note 1: The UE receives the PDN Address Information Element [TS] at the end of.

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The Mobility Management Entity MME is a network element that is responsible for control-plane functionalities, including authentication, authorization, bearer management, layer-2 mobility, etc.

A successful attack would deny the target UE from utilizing network services. CT 1 Secondary responsible groups: These are generic issues and not only a concern of the EPS. In particular, we used the pdsch-ue application to scan a specified frequency and detect surrounding eNodeBs. A Release-8 UE always requests a dual-stack bearer, but accepts what is assigned by the network. Hence even if the UE is close to a real eNodeB, operating the rogue eNodeB on a frequency that has the highest reselection priority would force UEs to attach to it.

As devices and applications are upgraded to support IPv6, they can start leveraging the IPv6 connectivity provided by the networks while maintaining the ability to fall back to IPv4. Further, this knowledge helps in positioning the rogue eNodeB to maximize the effect of active attacks. Prefix Delegation IPv6 prefix delegation is a part of Release and is not covered by any earlier releases.

However, the attacks we presented are not identified by the study. We now describe network configuration issues, subscriber identity mapping technique, and observations about certain LTE network access protocols. Authentication and Key Agreement.

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Specification withdrawal has failed. The obvious problems are that these solutions are not mandatory, are not unified across networks, and therefore also lack a well-specified fallback mechanism from the UE’s point of view. For example, lack of mutual authentication between mobile users and the network implied that it was possible for an attacker to set up fake base stations and convince legitimate mobile devices to connect to it.


Das Verfahren nach Anspruch 7, wobei das Verfahren ferner aufweist: 244301 section discusses a few additional security concerns to take into consideration.

D2 is similar to D1 but the result is different. The control plane is always at least integrity and replay protected, and may also be confidentiality protected.

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About 16 million UEs can be assigned a private IPv4 address that is unique within a domain. In particular, the network sends an integrity-protected message including the list of supported security algorithms previously received from the UE.

This solution would protect against passive attacks L1. A UE can be attached to one or more gateways simultaneously. During the past two decades, mobile devices such as smartphones have become ubiquitous. Using commercial LTE mobile devices in real LTE networks, we demonstrate inexpensive, and 224301 attacks exploiting these vulnerabilities. It is then possible that the address resolution never completes when the UE tries st resolve the link-layer address of the GGSN, thus stalling all IPv6 traffic.

Alternatively, the negotiation of network capabilities could be done after AKA is successfully completed. This description is made for the purpose of illustrating the general principles of the invention and should not be 3pgp in a limiting sense.

Some of the issues and concerns with respect to deployment and shortage of private IPv4 addresses within a single network domain are also discussed. Sections 5 — 7. Similarly, signal coverage area 33gpp our rogue eNodeB could be increased to demonstrate feasibility of the attack.

Restricting Outbound IPv6 Roaming Operating dual-stack networks does imply cost and complexity to a certain extent. The 3pp unit may receive RF wireless signals, convert the received RF wireless signals to baseband signals, which are processed by the baseband unit, or receive baseband signals fs the baseband unit and convert the received baseband signals to RF wireless signals, which are later transmitted.


The fallback option in this specific case is mostly up to the UE to implement. However, the signal coverage area can be increased with a suitable power amplifier. T-Labs, Aalto University, and Huawei provided test devices used in our experiments. Tracking Area Update Accept. By downgrading subscribers, an attacker could attempt to launch known 2G or 3G attacks, besides loss of LTE services. The process of building such rogue eNodeBs is described below. A UE may hence be attached to one or more gateways via separate connections, i.

This would be a privacy threat and would allow tracking of subscribers.

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Therefore we made an effort to responsibly disclose our work to the relevant standard bodies and affected parties. User Plane The user plane refers to data traffic and the required bearers for the data traffic.

Further, the rogue eNodeB broadcasts MCC and MNC numbers identical to the network operator of targeted subscribers to impersonate the real network operator. A method for handling a request for emergency bearer services by a mobile communication device configured for NAS signaling low priority, comprising: Our attacks are not presented 243011 this survey.

In particular, we demonstrate the use of novel tracking techniques to initially determine the TA and then exploit Smart Paging to identify a cell within that TA. Legacy devices and hosts that have an IPv4-only stack will continue to be 3gpo with IP connectivity to the Internet and services. The choice of using IPv6 or IPv4 depends on the capability of: Thus, with the setting of the establishment cause to “Emergency call”, both of the UE AS layer and the access network i. The dual- stack PDN connection, i.

A UE may hence be attached to one or more gateways via separate.