Netinfo Security ›› 2023, Vol. 23 ›› Issue (2): 1-10.doi: 10.3969/j.issn.1671-1122.2023.02.001

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Research on Man-in-the-Middle Attack Detection in LTE Access Network Based on Weighted Bayesian Classifier

PENG Cheng1,2, FAN Wei1,2(), ZHU Dali1,2, YANG Fen3   

  1. 1. Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100085, China
    2. School of Cyber Security, University of Chinese Academy of Sciences, Beijing 100049, China
    3. China Electronics Cyberspace Great Wall Co., Ltd., Beijing 102209, China
  • Received:2022-12-14 Online:2023-02-10 Published:2023-02-28
  • Contact: FAN Wei E-mail:fanwei@iie.ac.cn

Abstract:

The air interface of radio access network is exposed to the outdoors and can be accessed to anyone, which is easy to be controlled and attacked by others. Man-in-the-middle (MITM) attack is one of the typical attacks. This paper aimed to detect MITM attack on the air interface of LTE access network, and focused on the access process that was vulnerable to MITM attack. It analyzed the changes of signaling and parameters and extracted eight identifiable features. Considering the different effects of each feature on the classification results, this paper used the advantages of genetic algorithm in combination optimization problem to solve the optimal weights combination of weighted Bayesian classifiers, improved the calculation method of weighted parameters, and proposed a new MITM attack detection algorithm from the perspective of signaling and logging. Finally, this paper compared the detection algorithm based on the weighted Bayesian classifier with the common detection methods of MITM attack. The result shows that the algorithm in this paper is obviously superior to other algorithms in terms of accuracy and false negatives.

Key words: LTE access network, man-in-the-middle detection, weighted naive bayes, genetic algorithm

CLC Number: