CVE-2022-22724 : Exploit Details and Defense Strategies

A CWE-400 vulnerability has been identified in Modicon M340 CPUs: BMXP34 (All Versions), potentially leading to a denial of service. Read on to understand the impact, technical details, and mitigation strategies.

Understanding CVE-2022-22724

This section delves into the specifics of the vulnerability and its implications.

What is CVE-2022-22724?

The CVE-2022-22724 relates to a CWE-400 vulnerability in Modicon M340 CPUs: BMXP34 (All Versions). Attackers could trigger a denial of service by sending numerous TCP RST or FIN packets to open TCP ports of the PLC, affecting HTTP and Modbus communication.

The Impact of CVE-2022-22724

The vulnerability allows threat actors to consume resources uncontrollably on ports 80 and 502, disrupting the normal operation of the affected devices. This could result in service unavailability and potential financial losses.

Technical Details of CVE-2022-22724

Explore the technical aspects of the CVE-2022-22724 vulnerability in this section.

Vulnerability Description

The uncontrolled resource consumption vulnerability within Modicon M340 CPUs: BMXP34 (All Versions) can be exploited by leveraging large numbers of TCP RST or FIN packets sent to open TCP ports of the PLC, impacting ports 80 and 502 specifically.

Affected Systems and Versions

All versions of Modicon M340 CPUs: BMXP34 are susceptible to this vulnerability, potentially putting systems at risk of denial of service attacks.

Exploitation Mechanism

The exploitation involves flooding open TCP ports of the PLC with TCP RST or FIN packets, leading to resource exhaustion and subsequent denial of service.

Mitigation and Prevention

Discover the best practices for mitigating the CVE-2022-22724 vulnerability in this section.

Immediate Steps to Take

Network administrators are advised to restrict access to affected devices, monitor network traffic for suspicious activities, and apply security patches provided by the vendor.

Long-Term Security Practices

Incorporating network segmentation, implementing intrusion detection systems, and conducting regular security audits can enhance the overall security posture of the network.

Patching and Updates

Regularly update firmware and software patches provided by Schneider Electric for Modicon M340 CPUs: BMXP34 to address the CVE-2022-22724 vulnerability and strengthen the security of the industrial control systems.