CVE-2022-34760 : What You Need to Know

A CWE-835 vulnerability has been identified in Schneider Electric's OPC UA Modicon Communication Module and X80 advanced RTU Communication Module. The vulnerability could lead to a denial of service of the webserver due to improper handling of cookies.

Understanding CVE-2022-34760

This section provides insights into the nature and impact of the identified CWE-835 vulnerability.

What is CVE-2022-34760?

CVE-2022-34760 is a CWE-835 vulnerability that involves a Loop with Unreachable Exit Condition ('Infinite Loop') in the affected Schneider Electric communication modules.

The Impact of CVE-2022-34760

The vulnerability poses a high availability impact with a CVSS base score of 7.5, indicating a significant threat to the affected systems.

Technical Details of CVE-2022-34760

Explore the specific technical aspects of the CVE-2022-34760 vulnerability.

Vulnerability Description

The vulnerability arises from a loop with an unreachable exit condition, potentially leading to a denial of service of the webserver.

Affected Systems and Versions

OPC UA Modicon Communication Module: BMENUA0100 (V1.10 and prior)
X80 advanced RTU Communication Module: BMENOR2200H V1.0

Exploitation Mechanism

The improper handling of cookies triggers an infinite loop that can disrupt the webserver, causing a denial of service.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2022-34760 and prevent potential exploits.

Immediate Steps to Take

Update the affected products to the patched versions released by Schneider Electric.
Implement network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Schneider Electric.
Conduct periodic security assessments to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about the latest patches and updates provided by Schneider Electric for the affected communication modules.