CVE-2022-24321 Explained : Impact and Mitigation

This article provides details about a CWE-754 vulnerability affecting ClearSCADA and EcoStruxure Geo SCADA Expert, leading to Denial of Service due to a malformed HTTP request.

Understanding CVE-2022-24321

This CVE involves an Improper Check for Unusual or Exceptional Conditions vulnerability that impacts the mentioned SCADA products.

What is CVE-2022-24321?

The CWE-754 vulnerability allows attackers to trigger a Denial of Service on the Geo SCADA server by sending a specially crafted HTTP request.

The Impact of CVE-2022-24321

The vulnerability can disrupt the availability of the affected SCADA systems, potentially causing operational downtime and affecting critical processes.

Technical Details of CVE-2022-24321

Here are the key technical details associated with this CVE:

Vulnerability Description

The vulnerability is related to an improper handling of unusual conditions, which can be exploited to crash the Geo SCADA server.

Affected Systems and Versions

ClearSCADA and EcoStruxure Geo SCADA Expert versions 2019 and 2020 are confirmed to be affected by this vulnerability.

Exploitation Mechanism

Exploitation involves sending a malformed HTTP request to the Geo SCADA server, triggering the Denial of Service condition.

Mitigation and Prevention

To safeguard your systems from CVE-2022-24321, consider the following measures:

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Filter incoming network traffic to block malicious requests.

Long-Term Security Practices

Regularly update and maintain the SCADA systems to mitigate future vulnerabilities.
Implement network segmentation to reduce the attack surface.

Patching and Updates

Stay informed about security updates released by the vendor and ensure timely implementation for enhanced protection.