4G NeTworks

Vulnerabilities in old GTP protocol could affect 4G and 5G networks

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Experts cautioned that vulnerabilities in the old GTP (GPRS Tunneling Protocol) could quite seriously affect the operation of 4G and 5G networks. n reports published last week and in December 2019, Positive Technologies and A10 Networks described in detail a number of vulnerabilities in this protocol. In particular, are known the following problems: Disclosure of subscriber information (including location data that can be used to track users); spoofing, which can be used by scammers, as well as for attacks that allow posing as another user; denial of service (DoS) attacks on network equipment, resulting in massive disruption to mobile communications. Researchers explain that mobile providers will be forced to support GTP in their 5G networks, and because of this, users …

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Vulnerabilities in Old GTP

IMP4GT Vulnerability in LTE Threatens Almost All Modern Smartphones

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Experts from Ruhr University reported an IMP4GT (IMPersonation Attacks in 4G NeTworks) problem. Modern LTE-enabled devices are vulnerable to IMP4GT, therefore, it threatens almost all smartphones, tablets, and IoT devices. bug allows simulating another user’s operator’s network, which means an attacker will be able to issue paid subscriptions at the expense of other people or publish something (for example, secret documents) under the mask of other files. “In mobile networks, mutual authentication ensures that the smartphone and the network can verify their identities. In LTE, mutual authentication is established on the control plane with a provably secure authentication and key agreement protocol. However, missing integrity protection of the user plane still allows an adversary to manipulate and redirect IP packets”, …

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IMP4GT Vulnerability Threats Smartphones
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