Security analysis of 5G authentication and key agreement protocol

JIA Fan; YAN Yan; YUAN Kaiguo; ZHAO Lujing

doi:10.16511/j.cnki.qhdxxb.2021.26.001

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Journal of Tsinghua University(Science and Technology) ›› 2021, Vol. 61 ›› Issue (11) : 1260-1266. DOI: 10.16511/j.cnki.qhdxxb.2021.26.001

VULNERABILITY ANALUSIS AND RISK ASSESSMENT

Security analysis of 5G authentication and key agreement protocol

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Abstract

5G networks are developing rapidly. The security of the authentication and key agreement protocols is the core issue of 5G security. The TAMARIN prover is used here to analyze the EAP-AKA' protocol for 5G networks. The protocol specifications are analyzed to identify the security requirements as a confidential attribute and an authentication attribute. A model is then established according to the TAMARIN standard to verify that these security attributes are satisfied. The verification results show a single shot consistency violation between SEAF and AUSF regarding SNID and a violation of the forward secrecy of the anchor key K_SEAF, which may lead to the network experiencing replay attacks, authentication synchronization failure attacks, and Anchor key K_SEAF leak attacks. Security hardening methods are then presented for these attacks with theoretical and experimental verification.

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5G network security / EAP-AKA' / Lowe's taxonomy / TAMARIN

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JIA Fan, YAN Yan, YUAN Kaiguo, ZHAO Lujing. Security analysis of 5G authentication and key agreement protocol[J]. Journal of Tsinghua University(Science and Technology). 2021, 61(11): 1260-1266 https://doi.org/10.16511/j.cnki.qhdxxb.2021.26.001

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