CVE-2022-24946 Explained : Impact and Mitigation

A detailed overview of the Improper Resource Locking vulnerability affecting various Mitsubishi Electric products.

Understanding CVE-2022-24946

This CVE involves an Improper Resource Locking vulnerability in multiple Mitsubishi Electric products, potentially leading to a denial of service (DoS) condition.

What is CVE-2022-24946?

The CVE concerns a security flaw in firmware versions of Mitsubishi Electric MELSEC iQ-R Series R12CCPU-V, MELSEC-Q Series, MELSEC-L Series, and MELIPC Series. It allows a remote unauthenticated attacker to disrupt Ethernet communications via specially crafted packets.

The Impact of CVE-2022-24946

The vulnerability can result in a DoS condition, affecting the availability of the impacted Mitsubishi Electric devices. Recovery typically requires a system reset.

Technical Details of CVE-2022-24946

This section delves into the specifics of the vulnerability, including its description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The Improper Resource Locking vulnerability in the identified Mitsubishi Electric products enables remote attackers to induce a DoS scenario via Ethernet communications manipulation.

Affected Systems and Versions

The vulnerability impacts various firmware versions of the MELSEC iQ-R Series R12CCPU-V, MELSEC-Q Series, MELSEC-L Series, and MELIPC Series devices.

Exploitation Mechanism

By sending carefully crafted packets, unauthenticated external entities can exploit the security flaw to disrupt Ethernet communications, necessitating a system reset for recovery.

Mitigation and Prevention

In light of CVE-2022-24946, it is crucial for users to implement immediate and long-term security measures to mitigate risks and prevent potential exploitation.

Immediate Steps to Take

Users are advised to apply relevant patches and updates provided by Mitsubishi Electric promptly. Additionally, network segmentation and access controls can help contain the impact of the vulnerability.

Long-Term Security Practices

Adopting secure configuration practices, conducting regular security assessments, and staying informed about emerging threats are essential for long-term security posture improvement.

Patching and Updates

Regularly monitor Mitsubishi Electric's security advisories and apply recommended patches and firmware updates to address CVE-2022-24946 and enhance the security of the affected products.