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http://dx.doi.org/10.9708/jksci.2021.26.09.081

Analysis of Deregistration Attacks in 5G Standalone Non-Public Network  

Kim, Keewon (Dept. of Computer Engineering, Mokpo National Maritime University)
Park, Kyungmin (Information Security Research Division, ETRI)
Park, Tae-Keun (Dept. of Computer Engineering, Dankook University)
Publication Information
Journal of the Korea Society of Computer and Information / v.26, no.9, 2021 , pp. 81-88 More about this Journal
Abstract
In this paper, we analyze the possibility of deregistration attack in 5G SNPN (Standalone Non-Public Network) based on 3GPP standard document. In the deregistraion attack, the attacker pretends to be a UE that is normally registered with AMF (Access and Mobility Management Function) and attempts to establish a spoofed RRC (Radio Resource Control) connection, causing AMF to deregister the existing UE. The existing deregistration attack attempts a spoofed RRC connection to the AMF in which the UE is registered. In addition, this paper analyzes whether deregistration attack is possible even when an attacker attempts to establish a spoofed RRC connection to a new AMF that is different from the registered AMF. When the 5G mobile communication network system is implemented by faithfully complying with the 3GPP standard, it is determined that a deregistration attack of a UE is impossible.
Keywords
5G; Standalone Non-Public Network; 3GPP Standard; Deregistration Attack; Attack Analysis;
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