CVE-2020-28220 : What You Need to Know

A CWE-119 vulnerability exists in Modicon M258 Firmware and SoMachine/SoMachine Motion software, potentially leading to a buffer overflow.

Understanding CVE-2020-28220

This CVE involves an Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability.

What is CVE-2020-28220?

The vulnerability in Modicon M258 Firmware and SoMachine/SoMachine Motion software could result in a buffer overflow if the length of a file transferred to the webserver is not verified.

The Impact of CVE-2020-28220

The vulnerability could be exploited to execute arbitrary code or crash the system, posing a significant security risk.

Technical Details of CVE-2020-28220

This section provides more technical insights into the CVE.

Vulnerability Description

The CWE-119 vulnerability allows attackers to exceed the bounds of a memory buffer, potentially leading to a buffer overflow.

Affected Systems and Versions

Modicon M258 Firmware (All versions prior to V5.0.4.11)
SoMachine/SoMachine Motion software (All versions)

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a file with an unchecked length to the webserver, triggering a buffer overflow.

Mitigation and Prevention

Protect your systems from CVE-2020-28220 with these measures.

Immediate Steps to Take

Apply the latest security patches provided by the vendor.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe file handling practices to prevent buffer overflow attacks.

Patching and Updates

Ensure all systems are updated to Modicon M258 Firmware V5.0.4.11 or later.
Update SoMachine/SoMachine Motion software to the latest version to mitigate the vulnerability.