CVE-2018-7849 : Exploit Details and Defense Strategies
Learn about CVE-2018-7849 affecting Schneider Electric's Modicon M580, M340, Quantum, and Premium. Discover the impact, affected systems, exploitation mechanism, and mitigation steps.
A security vulnerability known as CWE-248 affects multiple versions of Schneider Electric's Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium. This vulnerability could lead to a Denial of Service attack due to inadequate data integrity verification when transmitting files to the controller using Modbus.
Understanding CVE-2018-7849
This CVE identifies a vulnerability in Schneider Electric's Modicon series that could potentially result in a Denial of Service attack.
What is CVE-2018-7849?
The vulnerability in Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium allows for a Denial of Service attack due to insufficient data integrity checks during file transmission via Modbus.
The Impact of CVE-2018-7849
The vulnerability could be exploited to disrupt operations by causing a Denial of Service attack on affected systems.
Technical Details of CVE-2018-7849
This section provides technical details about the vulnerability.
Vulnerability Description
The CWE-248 vulnerability in Schneider Electric's Modicon series arises from inadequate data integrity verification during file transmission, potentially leading to a Denial of Service attack.
Affected Systems and Versions
- Products affected: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
- Vulnerable versions: Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium
Exploitation Mechanism
The vulnerability can be exploited by attackers to launch a Denial of Service attack by manipulating file transmissions to the controller using Modbus.
Mitigation and Prevention
Protecting systems from CVE-2018-7849 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Schneider Electric promptly.
- Implement network segmentation to isolate critical systems.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update and patch all software and firmware on industrial control systems.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate staff on cybersecurity best practices to enhance overall security posture.
Patching and Updates
Ensure that all affected systems are updated with the latest patches and security updates to mitigate the risk of exploitation.