CVE-2018-7798 : Security Advisory and Response

The Modicon M221, in all its versions, contains a vulnerability known as Insufficient Verification of Data Authenticity (CWE-345) that can lead to unauthorized alterations in the IPv4 configuration when remotely accessed.

Understanding CVE-2018-7798

This CVE entry highlights a security flaw in the Modicon M221 devices that could potentially impact the IP address, mask, and gateway settings when accessed remotely.

What is CVE-2018-7798?

The vulnerability in Modicon M221 devices allows for unauthorized changes to the IPv4 configuration, posing a risk of manipulation when the device is remotely connected.

The Impact of CVE-2018-7798

The vulnerability could result in unauthorized modifications to critical network settings, compromising the integrity and security of the affected systems.

Technical Details of CVE-2018-7798

The following technical details shed light on the specifics of the CVE-2018-7798 vulnerability.

Vulnerability Description

The Insufficient Verification of Data Authenticity vulnerability in Modicon M221 devices enables attackers to alter IPv4 configuration parameters through remote connections.

Affected Systems and Versions

Product: Modicon M221, All Versions
Vendor: Schneider Electric SE

Exploitation Mechanism

The vulnerability can be exploited by malicious actors through remote connections to the Modicon M221 devices, allowing them to manipulate the IPv4 configuration settings.

Mitigation and Prevention

Protecting systems from CVE-2018-7798 requires immediate actions and long-term security practices.

Immediate Steps to Take

Implement network segmentation to restrict access to critical devices like Modicon M221.
Regularly monitor network traffic for any suspicious activities.
Apply access controls and strong authentication mechanisms for remote connections.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Keep systems up to date with the latest security patches and firmware updates.
Educate employees on cybersecurity best practices to prevent unauthorized access.

Patching and Updates

Schneider Electric SE may release patches or updates to address the CVE-2018-7798 vulnerability. Ensure timely application of these patches to secure the Modicon M221 devices.