CVE-2023-4562 : Vulnerability Insights and Analysis

This CVE-2023-4562 article provides information about an Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules.

Understanding CVE-2023-4562

This vulnerability allows a remote unauthenticated attacker to obtain sequence programs from the product or write malicious sequence programs or improper data in the product without authentication by sending illegitimate messages.

What is CVE-2023-4562?

The CVE-2023-4562 vulnerability is classified as an Improper Authentication vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules. It can result in Information Disclosure, Information Tampering, and Authentication Bypass.

The Impact of CVE-2023-4562

The Impacts of the CVE-2023-4562 vulnerability include Information Disclosure, Information Tampering, and Authentication Bypass, which can have severe consequences on the affected systems.

Technical Details of CVE-2023-4562

This vulnerability has a CVSSv3.1 base score of 9.1, indicating a critical severity level. The attack complexity is low, and it can be exploited over a network without any privileges required. The confidentiality and integrity impact are both high, with no user interaction needed.

Vulnerability Description

The vulnerability allows remote unauthenticated attackers to access and modify sequence programs and data in MELSEC-F Series main modules without proper authentication, potentially leading to unauthorized information disclosure or tampering.

Affected Systems and Versions

The vulnerability affects various products in the MELSEC-F Series FX3U, FX3G, FX3S, FX3UC, FX3GAC, and FX3SA lines from Mitsubishi Electric Corporation, across all versions.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by sending illegitimate messages to the affected modules, enabling them to obtain sensitive information, tamper with data, or bypass authentication mechanisms.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-4562, immediate steps need to be taken, followed by long-term security practices and regular patching and updates.

Immediate Steps to Take

Monitor and restrict network access to vulnerable systems.
Implement firewall rules and network segmentation to limit remote access.
Update access controls and strengthen authentication mechanisms.

Long-Term Security Practices

Regularly review and update security policies and procedures.
Conduct security training and awareness programs for employees.
Perform routine vulnerability assessments and security audits.

Patching and Updates

Refer to the vendor's security advisory for specific patches and updates addressing the CVE-2023-4562 vulnerability. Regularly check for new releases and apply patches promptly to secure the affected systems.