CVE-2023-5310 : What You Need to Know

This CVE-2023-5310 was assigned by Silabs and published on December 15, 2023. It highlights a denial of service vulnerability affecting Silicon Labs Z-Wave controller and endpoint devices running Z-Wave SDK v7.20.3 (Gecko SDK v4.3.3) and earlier versions.

Understanding CVE-2023-5310

This vulnerability, identified as CAPEC-601 Jamming, can be exploited by attackers on the network to disrupt the normal operations of the devices by sending a stream of packets, causing a denial of service.

What is CVE-2023-5310?

The CVE-2023-5310 refers to a denial of service vulnerability in Silicon Labs Z-Wave controller and endpoint devices, specifically affecting those running Z-Wave SDK v7.20.3 (Gecko SDK v4.3.3) and earlier versions. Attackers can leverage this vulnerability by sending a continuous stream of packets to the devices.

The Impact of CVE-2023-5310

The impact of this vulnerability is significant as it can lead to a denial of service on the affected devices. Such attacks can disrupt the normal functioning of the Z-Wave controller and endpoint devices, potentially causing downtime or interruptions in their operation.

Technical Details of CVE-2023-5310

This section delves into the technical aspects of the CVE, including vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in question is a denial of service issue that exists in all Silicon Labs Z-Wave controller and endpoint devices running Z-Wave SDK v7.20.3 (Gecko SDK v4.3.3) and earlier. It can be exploited by devices on the network sending a stream of packets to the target device.

Affected Systems and Versions

The vulnerability impacts Z-Wave SDK v7.20.3 (Gecko SDK v4.3.3) and earlier versions on Silicon Labs Z-Wave controller and endpoints devices.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a continuous stream of packets to the Z-Wave controller and endpoint devices, leading to a denial of service condition.

Mitigation and Prevention

To address CVE-2023-5310, proactive steps need to be taken to mitigate the risk posed by this denial of service vulnerability.

Immediate Steps to Take

Update affected devices to a patched version of Z-Wave SDK to prevent exploitation.
Implement network-level controls to detect and mitigate malicious packet streams.

Long-Term Security Practices

Regularly monitor network traffic for any unusual patterns that may indicate denial of service attacks.
Conduct security assessments and audits to identify and address vulnerabilities in Z-Wave devices.

Patching and Updates

Silicon Labs has likely released patches for the affected Z-Wave devices. Ensure timely application of these patches and updates to protect the devices from potential exploitation.