CVE-2022-35624 : Exploit Details and Defense Strategies

This article provides details about CVE-2022-35624, a heap overflow vulnerability found in Nordic nRF5 SDK for Mesh 5.0. The vulnerability can be exploited by sending segmented packets with specific parameters.

Understanding CVE-2022-35624

This section covers the impact and technical details of the CVE-2022-35624 vulnerability.

What is CVE-2022-35624?

CVE-2022-35624 is a heap overflow vulnerability discovered in Nordic nRF5 SDK for Mesh 5.0. It can be triggered by sending a series of segmented packets with specific criteria that lead to a heap overflow.

The Impact of CVE-2022-35624

The vulnerability has a CVSS v3.1 base score of 8.2, categorizing it as high severity. It poses a risk to the confidentiality of data due to its ability to enable unauthorized access through the heap overflow.

Technical Details of CVE-2022-35624

Explore the specifics of the vulnerability in this section.

Vulnerability Description

The vulnerability results from a heap overflow when a malicious actor sends segmented packets with SegO values greater than SegN, causing a buffer overflow beyond the intended memory allocation.

Affected Systems and Versions

The issue affects Nordic nRF5 SDK for Mesh 5.0. Systems utilizing this specific version are vulnerable to exploitation through the described method.

Exploitation Mechanism

By sending a carefully crafted series of segmented packets with SegO values exceeding SegN, an attacker can trigger the heap overflow, potentially leading to unauthorized access and data compromise.

Mitigation and Prevention

Learn how to address and prevent the CVE-2022-35624 vulnerability below.

Immediate Steps to Take

It is crucial to apply security patches or updates provided by the vendor to mitigate the risk associated with CVE-2022-35624. Additionally, network monitoring and access controls can help detect and prevent exploitation attempts.

Long-Term Security Practices

Incorporate secure coding practices, conduct regular security audits, and stay informed about potential vulnerabilities in the software used to enhance long-term security posture.

Patching and Updates

Regularly check for updates from Nordic Semiconductor to ensure that the latest security patches are applied promptly to safeguard systems against known vulnerabilities.