CVE-2022-34764 : Exploit Details and Defense Strategies

A CWE-119 vulnerability has been identified in Schneider Electric's OPC UA Modicon Communication Module and X80 advanced RTU Communication Module, potentially leading to denial of service when parsing the URL.

Understanding CVE-2022-34764

This CVE-2022-34764 involves an Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability, impacting specific Schneider Electric products.

What is CVE-2022-34764?

The vulnerability in the affected Schneider Electric modules could result in a denial of service situation, triggered during URL parsing.

The Impact of CVE-2022-34764

The vulnerability can have a moderate impact, with a CVSS v3.1 base score of 5.9 (Medium severity) and high availability impact.

Technical Details of CVE-2022-34764

The following technical details outline the specifics of CVE-2022-34764.

Vulnerability Description

The CVE-2022-34764 vulnerability is classified as CWE-119, indicating improper restriction of operations within a memory buffer.

Affected Systems and Versions

OPC UA Modicon Communication Module: Affected version V1.10 and prior, with product name BMENUA0100.
X80 advanced RTU Communication Module: Affected version V1.0, with product name BMENOR2200H.

Exploitation Mechanism

The vulnerability can be exploited by an attacker leveraging network access and a high attack complexity scenario.

Mitigation and Prevention

Understanding how to mitigate and prevent the CVE-2022-34764 vulnerability is crucial for system security.

Immediate Steps to Take

Users are advised to update the affected Schneider Electric modules to the latest patched versions promptly.
Implement network security measures to restrict access to vulnerable modules.

Long-Term Security Practices

Regularly monitor vendor security advisories for any updates related to this vulnerability.
Conduct security assessments to identify and address any potential vulnerabilities proactively.

Patching and Updates

Stay informed about security patches released by Schneider Electric for the impacted modules to ensure the systems are protected.