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CVE-2022-34761 Explained : Impact and Mitigation

Learn about CVE-2022-34761, a CWE-476 vulnerability impacting Schneider Electric's OPC UA Modicon and X80 advanced RTU Communication Modules. Find out about the impact, affected systems, and mitigation steps.

A CWE-476 NULL Pointer Dereference vulnerability has been identified in the OPC UA Modicon Communication Module and the X80 advanced RTU Communication Module by Schneider Electric. This could lead to a denial of service of the webserver when parsing JSON content type.

Understanding CVE-2022-34761

This section will delve into the details of the CVE-2022-34761 vulnerability.

What is CVE-2022-34761?

CVE-2022-34761 is a CWE-476 NULL Pointer Dereference vulnerability affecting Schneider Electric's OPC UA Modicon Communication Module and X80 advanced RTU Communication Module.

The Impact of CVE-2022-34761

The vulnerability could result in a denial of service of the webserver due to a NULL Pointer Dereference issue when handling JSON content type.

Technical Details of CVE-2022-34761

In this section, we will explore the technical aspects of the CVE-2022-34761 vulnerability.

Vulnerability Description

The vulnerability arises due to a NULL Pointer Dereference issue, posing a high availability impact.

Affected Systems and Versions

The affected products include the OPC UA Modicon Communication Module (V1.10 and prior) and the X80 advanced RTU Communication Module (V2.01 and later).

Exploitation Mechanism

The vulnerability can be exploited over a network with low attack complexity.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent CVE-2022-34761.

Immediate Steps to Take

Immediate actions involve updating to non-vulnerable versions, monitoring systems for any signs of exploitation, and restricting network access.

Long-Term Security Practices

Implementing regular security patches, conducting security training for personnel, and employing network segmentation are essential for long-term security.

Patching and Updates

Stay informed about security updates from Schneider Electric and apply patches promptly to secure the affected modules.

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