CVE-2022-26034 : Exploit Details and Defense Strategies

This article discusses the improper authentication vulnerability in the communication protocol provided by the AD (Automation Design) server of Yokogawa Electric Corporation's CENTUM VP series with VP6E5000(AD Suite Engineering ServerFunction) installed and B/M9000 VP. Attackers exploiting this vulnerability in versions R6.01.10 to R6.09.00 and R8.01.01 to R8.03.01 can access AD server functions, potentially resulting in data leakage or tampering.

Understanding CVE-2022-26034

Insecure authentication mechanisms in Yokogawa Electric Corporation's CENTUM VP series and B/M9000 VP versions mentioned leave systems exposed to unauthorized access and potential data compromise.

What is CVE-2022-26034?

The CVE-2022-26034 vulnerability arises from improper authentication in the communication protocol used by the AD server of affected Yokogawa systems. Hackers can exploit this flaw to gain access to AD server functions, posing serious risks to data integrity.

The Impact of CVE-2022-26034

By leveraging this vulnerability, threat actors can bypass authentication measures and misuse the functionalities of the AD server. This could lead to sensitive data being leaked or maliciously altered, impacting the confidentiality and integrity of the information managed by the AD server.

Technical Details of CVE-2022-26034

This section delves into the specifics of the vulnerability, outlining affected systems, version details, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from an improper authentication mechanism in the communication protocol utilized by the AD server in CENTUM VP series and B/M9000 VP products. Exploitation of this flaw enables unauthorized individuals to access AD server functions.

Affected Systems and Versions

Yokogawa Electric Corporation's CENTUM VP R6.01.10 to R6.09.00, CENTUM VP Small R6.01.10 to R6.09.00, CENTUM VP Basic R6.01.10 to R6.09.00, and B/M9000 VP R8.01.01 to R8.03.01 are confirmed to be impacted by CVE-2022-26034.

Exploitation Mechanism

Threat actors can exploit this vulnerability by leveraging the insecure authentication mechanism within the AD server's communication protocol. By bypassing authentication, attackers can potentially misuse the functions provided by the AD server.

Mitigation and Prevention

Addressing CVE-2022-26034 requires immediate actions and long-term security practices to safeguard affected systems against potential threats. Employing security patches and adopting robust security measures are essential.

Immediate Steps to Take

Consider implementing network segmentation to restrict access to vulnerable components.
Monitor network traffic for any suspicious activities that may indicate unauthorized access.

Long-Term Security Practices

Regularly update and patch system components to address known vulnerabilities.
Conduct security audits and assessments to identify and remediate weak points in the system.

Patching and Updates

Stay informed about security advisories and updates from Yokogawa Electric Corporation to apply relevant patches promptly, ensuring the protection of CENTUM VP series and B/M9000 VP systems.