CVE-2022-24400 : What You Need to Know

A flaw in the TETRA authentication procedure allows a MITM adversary to set the session key DCK to zero by predicting the MS challenge RAND2.

Understanding CVE-2022-24400

This CVE involves a DCK pinning attack in TETRA that can be exploited by manipulating the authentication process.

What is CVE-2022-24400?

The vulnerability in the TETRA Standard enables an attacker to set the session key DCK to zero, compromising the security of the authentication mechanism.

The Impact of CVE-2022-24400

The impact of CVE-2022-24400 is significant as it can lead to unauthorized access to systems and sensitive information, posing a threat to data confidentiality, integrity, and availability.

Technical Details of CVE-2022-24400

The technical details of CVE-2022-24400 provide insights into the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a flaw in the TETRA authentication process, allowing an adversary to manipulate the session key DCK by predicting the MS challenge RAND2.

Affected Systems and Versions

The vulnerability affects all versions of the ETSI TETRA Standard, making a wide range of systems susceptible to exploitation.

Exploitation Mechanism

By exploiting the flaw in the authentication procedure, an attacker can predict the challenge RAND2 and set the session key DCK to zero, compromising the security of the system.

Mitigation and Prevention

To address CVE-2022-24400, immediate steps should be taken to mitigate the risk and prevent unauthorized access to systems and sensitive information.

Immediate Steps to Take

Organizations should implement security patches and updates provided by ETSI to fix the vulnerability and enhance the security of TETRA systems.

Long-Term Security Practices

In the long term, organizations should establish robust security practices, including regular security audits, training for personnel, and continuous monitoring for any suspicious activities.

Patching and Updates

Regularly applying security patches and updates for the TETRA Standard is essential to safeguard systems against potential vulnerabilities and security risks.