CVE-2020-6081 Explained : Impact and Mitigation

An exploitable code execution vulnerability exists in the PLC_Task functionality of 3S-Smart Software Solutions GmbH CODESYS Runtime 3.5.14.30. A specially crafted network request can cause remote code execution, posing a critical threat.

Understanding CVE-2020-6081

This CVE involves a critical code execution vulnerability in the CODESYS Runtime software, allowing attackers to execute remote code.

What is CVE-2020-6081?

CVE-2020-6081 is a critical vulnerability in the PLC_Task functionality of 3S-Smart Software Solutions GmbH CODESYS Runtime 3.5.14.30. Attackers can exploit this flaw by sending a malicious network request to achieve remote code execution.

The Impact of CVE-2020-6081

The vulnerability has a CVSS base score of 9.9, indicating a critical severity level. The impact includes high confidentiality, integrity, and availability impacts, with low privileges required for exploitation.

Technical Details of CVE-2020-6081

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability lies in the PLC_Task functionality of CODESYS Runtime 3.5.14.30, enabling attackers to achieve remote code execution through specially crafted network requests.

Affected Systems and Versions

Product: 3S
Vendor: 3S-Smart Software Solutions GmbH
Version: 3S-Smart Software Solutions GmbH CODESYS Runtime 3.5.14.30

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Changed
Vector String: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Mitigation and Prevention

Protecting systems from CVE-2020-6081 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor patches and updates promptly.
Implement network segmentation to limit exposure.
Monitor network traffic for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and audits.
Educate users on safe network practices and phishing awareness.
Keep software and systems up to date with the latest security patches.
Employ intrusion detection and prevention systems.
Consider network behavior analysis tools.

Patching and Updates

Regularly check for security updates and patches from 3S-Smart Software Solutions GmbH to address the vulnerability.