CVE-2022-35623 : Security Advisory and Response

A heap overflow vulnerability in the Nordic nRF5 SDK for Mesh 5.0 could allow an attacker to trigger the issue by sending specific packets. Here's what you need to know about CVE-2022-35623 and how to protect your systems.

Understanding CVE-2022-35623

This section delves into the details of the heap overflow vulnerability in the Nordic nRF5 SDK for Mesh 5.0.

What is CVE-2022-35623?

CVE-2022-35623 is a heap overflow vulnerability that can be exploited by sending a series of segmented control packets and access packets with the same SeqAuth in the Nordic nRF5 SDK for Mesh 5.0.

The Impact of CVE-2022-35623

With a CVSS base score of 8.2 and a high severity level, this vulnerability could result in a compromise of confidentiality and integrity, although the attack complexity is low.

Technical Details of CVE-2022-35623

This section covers the technical aspects of the CVE-2022-35623 vulnerability.

Vulnerability Description

The vulnerability stems from a heap overflow issue triggered by specific packet sequences, allowing an attacker to potentially execute arbitrary code.

Affected Systems and Versions

The vulnerability affects Nordic nRF5 SDK for Mesh 5.0.

Exploitation Mechanism

By sending a series of segmented control packets and access packets with the same SeqAuth, an attacker can trigger the heap overflow vulnerability and potentially gain unauthorized access.

Mitigation and Prevention

To protect your systems from CVE-2022-35623, follow these mitigation strategies.

Immediate Steps to Take

Update to the latest version of the Nordic nRF5 SDK for Mesh or apply patches provided by the vendor.
Monitor network traffic for any unusual activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Educate users and personnel about the importance of cybersecurity best practices.

Patching and Updates

Stay informed about security advisories and updates from Nordic Semiconductor to ensure timely patching of vulnerabilities.