CVE-2018-5452 : Vulnerability Insights and Analysis

Emerson Process Management ControlWave Micro Process Automation Controller has a Stack-based Buffer Overflow vulnerability that can be exploited by sending manipulated packets on Port 20547, potentially causing the PLC to halt.

Understanding CVE-2018-5452

This CVE involves a critical vulnerability in the Emerson ControlWave Micro Process Automation Controller.

What is CVE-2018-5452?

The vulnerability in the ControlWave Micro [ProConOS v.4.01.280] firmware allows for a Stack-based Buffer Overflow when specific packets are sent to Port 20547, leading to a potential system halt.

The Impact of CVE-2018-5452

Exploiting this vulnerability could result in a denial of service condition, disrupting critical processes controlled by the affected PLC.

Technical Details of CVE-2018-5452

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from a stack-based buffer overflow issue in the firmware of the Emerson ControlWave Micro Process Automation Controller.

Affected Systems and Versions

Product: Emerson ControlWave Micro Process Automation Controller
Versions: CWM v.05.78.00 and earlier

Exploitation Mechanism

The vulnerability is triggered by sending manipulated packets on Port 20547, causing the PLC to transition into halt mode.

Mitigation and Prevention

Protecting systems from CVE-2018-5452 is crucial for maintaining operational integrity and security.

Immediate Steps to Take

Implement network segmentation to isolate critical devices from potential attackers.
Apply firewall rules to restrict access to vulnerable PLCs.
Monitor network traffic for any suspicious activity on Port 20547.

Long-Term Security Practices

Regularly update firmware and security patches for the affected devices.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Emerson may release patches or firmware updates to address the vulnerability; ensure timely installation to mitigate the risk of exploitation.