CVE-2018-7790 : What You Need to Know
Discover the impact of CVE-2018-7790, an Information Management Error vulnerability in Schneider Electric's Modicon M221 product, allowing unauthorized access and data theft. Learn about affected systems, exploitation mechanisms, and mitigation steps.
Schneider Electric's Modicon M221 product has an Information Management Error vulnerability that affects all versions before firmware V1.6.2.0. This vulnerability allows unauthorized individuals to replay authentication sequences, potentially leading to unauthorized access and data theft.
Understanding CVE-2018-7790
Schneider Electric's Modicon M221 product is vulnerable to an Information Management Error that can be exploited by attackers to upload the original program from the PLC.
What is CVE-2018-7790?
The CVE-2018-7790 vulnerability in Modicon M221 allows unauthorized users to replay authentication sequences, enabling them to connect to the device and extract sensitive information.
The Impact of CVE-2018-7790
Exploiting this vulnerability can result in unauthorized access to the Modicon M221 device and potential theft of sensitive data stored within the programmable logic controller.
Technical Details of CVE-2018-7790
Schneider Electric's Modicon M221 product vulnerability details.
Vulnerability Description
The Information Management Error vulnerability in Modicon M221 allows attackers to replay authentication sequences, gaining unauthorized access to the device.
Affected Systems and Versions
- Product: Modicon M221, all references
- Versions Affected: All versions prior to firmware V1.6.2.0
Exploitation Mechanism
- Attackers exploit the vulnerability to replay authentication sequences and connect to the Modicon M221 device.
- Once connected, attackers can upload the original program from the PLC, potentially compromising sensitive data.
Mitigation and Prevention
Steps to mitigate and prevent CVE-2018-7790.
Immediate Steps to Take
- Update the Modicon M221 firmware to version V1.6.2.0 or later to patch the vulnerability.
- Implement network segmentation to restrict unauthorized access to critical devices.
Long-Term Security Practices
- Regularly monitor and audit network traffic for any suspicious activities.
- Train employees on cybersecurity best practices to prevent social engineering attacks.
Patching and Updates
- Stay informed about security updates and patches released by Schneider Electric for the Modicon M221 product.