CVE-2018-7853 : Security Advisory and Response
Discover the CWE-248 vulnerability in Modicon M580, M340, Quantum, and Premium products by Schneider Electric, leading to denial of service. Learn how to mitigate and prevent this security risk.
Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium are vulnerable to a CWE-248 flaw that could lead to denial of service if attempting to read invalid physical memory blocks.
Understanding CVE-2018-7853
This CVE identifies a vulnerability in multiple Schneider Electric Modicon products that could result in a denial of service.
What is CVE-2018-7853?
The vulnerability in Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium allows attackers to cause a denial of service by reading invalid physical memory blocks over Modbus.
The Impact of CVE-2018-7853
The vulnerability poses a risk of denial of service if exploited, potentially disrupting critical operations relying on the affected Schneider Electric products.
Technical Details of CVE-2018-7853
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The CWE-248 flaw in Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium enables attackers to trigger a denial of service by attempting to access invalid physical memory blocks via Modbus.
Affected Systems and Versions
- Products: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
- Versions: All versions of the mentioned products
Exploitation Mechanism
Attackers can exploit this vulnerability by attempting to read invalid physical memory blocks in the controller using Modbus, leading to a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2018-7853 is crucial to prevent potential disruptions and security breaches.
Immediate Steps to Take
- Apply security patches provided by Schneider Electric promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all software and firmware in the environment.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
- Educate staff on cybersecurity best practices and awareness.
Patching and Updates
- Stay informed about security updates and advisories from Schneider Electric.
- Ensure timely deployment of patches to mitigate the CVE-2018-7853 vulnerability.