Security News > 2021 > March > 5G Security Flaw Allows Data Access, DoS Attacks

A design flaw discovered in the architecture of 5G network slicing can allow malicious actors to access potentially sensitive data and launch denial-of-service attacks, mobile network security company AdaptiveMobile Security warned this week.

AdaptiveMobile Security discovered that the architecture of 5G network slicing has a serious flaw that can expose the customers of mobile operators to various types of attacks.

"In its research, AdaptiveMobile Security examined 5G core networks that contain both shared and dedicated network functions, revealing that when a network has these 'hybrid' network functions that support several slices there is a lack of mapping between the application and transport layers identities," AdaptiveMobile explained.

"This flaw in the industry standards has the impact of creating an opportunity for an attacker to access data and launch denial of service attacks across multiple slices if they have access to the 5G Service Based Architecture."

A hacker compromising an edge network function connected to the operator's service based architecture could exploit this flaw in the design of network slicing standards to have access to both the operator's core network and the network slices for other enterprises," the company added.

AdaptiveMobile Security has reported its findings to the GSMA, which represents the interests of mobile network operators worldwide, to allow impacted organizations to take measures before 5G network slicing becomes more widely used.

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