CVE-2022-26942 : Vulnerability Insights and Analysis

Motorola MTM5000 series firmwares are affected by multiple missing pointer validation checks in the trusted execution module. This vulnerability allows an adversary to gain secure supervisor code execution within the trusted execution environment (TEE), compromising device and cryptographic keys.

Understanding CVE-2022-26942

This section will delve into the details of CVE-2022-26942, focusing on the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-26942?

The CVE-2022-26942 vulnerability in Motorola MTM5000 series firmwares arises from the absence of pointer validation on arguments passed to trusted execution environment (TEE) modules. This oversight allows an attacker with non-secure supervisor level code execution to exploit the flaw and achieve secure supervisor code execution within the TEE, ultimately leading to a complete compromise of the TEE module.

The Impact of CVE-2022-26942

The impact of CVE-2022-26942 is severe, as it enables unauthorized access to sensitive information such as device keys, TETRA cryptographic keys, and confidential TETRA cryptographic primitives. This vulnerability poses a critical risk to the security and integrity of the affected systems.

Technical Details of CVE-2022-26942

Understanding the technical aspects of CVE-2022-26942 is essential for implementing effective mitigation and prevention strategies.

Vulnerability Description

The vulnerability results from the lack of pointer validation in two critical TEE modules of the Motorola MTM5000 series firmwares, specifically in the KVL key management and TETRA cryptographic functionality modules. This oversight allows an attacker to compromise the TEE's security boundaries.

Affected Systems and Versions

Motorola Mobile Radio devices running the MTM5000 firmware version are impacted by CVE-2022-26942 due to the missing pointer validation checks in the TEE modules mentioned above.

Exploitation Mechanism

An adversary with non-secure supervisor level code execution can exploit this vulnerability by leveraging the lack of pointer validation in the TEE modules to gain secure supervisor code execution, leading to unauthorized access to critical cryptographic keys and functionalities.

Mitigation and Prevention

Taking immediate steps to address CVE-2022-26942 and implementing long-term security practices are crucial for safeguarding affected systems and mitigating potential risks.

Immediate Steps to Take

Organizations using Motorola MTM5000 series devices should apply relevant security patches provided by the vendor to address the vulnerability promptly. Additionally, restricting access to vulnerable systems and monitoring for suspicious activities can help prevent exploitation.

Long-Term Security Practices

Incorporating comprehensive security training for personnel, regular security assessments, and timely application of software updates are essential long-term practices to enhance the overall security posture of the affected systems.

Patching and Updates

Motorola has released patches and updates to address the vulnerability in the affected MTM5000 series firmwares. It is imperative for organizations to prioritize patching and updating their systems to prevent potential exploitation and enhance security.