CVE-2023-3670 : What You Need to Know

This CVE, published on July 28, 2023, highlights a vulnerability in CODESYS Development System and CODESYS Scripting that could potentially allow attackers with local access to compromise systems.

Understanding CVE-2023-3670

This section delves into the details of the CVE-2023-3670 vulnerability affecting CODESYS Development System and CODESYS Scripting.

What is CVE-2023-3670?

The vulnerability in CODESYS Development System versions 3.5.9.0 to 3.5.17.0 and CODESYS Scripting versions 4.0.0.0 to 4.1.0.0 arises from unsafe directory permissions. This flaw could permit attackers with local access to the workstation to deploy disguised scripts that may be executed by legitimate users.

The Impact of CVE-2023-3670

With a base severity score of 7.3 out of 10, this vulnerability has a high impact on confidentiality, integrity, and availability. The attack complexity is low, and while user interaction is required, the privileges needed for exploitation are also low.

Technical Details of CVE-2023-3670

In this section, we explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in CODESYS Development System and CODESYS Scripting allows local attackers to manipulate directory permissions, enabling them to place malicious scripts disguised as legitimate ones.

Affected Systems and Versions

The affected versions include CODESYS Development System 3.5.9.0 to 3.5.17.0 and CODESYS Scripting 4.0.0.0 to 4.1.0.0, exposing systems running these versions to potential exploitation.

Exploitation Mechanism

Attackers with local access to the workstation can leverage the insecure directory permissions to plant harmful scripts that could be executed by authorized users, leading to potential system compromise.

Mitigation and Prevention

This section outlines the necessary steps to mitigate the risks posed by CVE-2023-3670 and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update their CODESYS Development System and CODESYS Scripting to secure versions that address the vulnerability. Additionally, access control measures should be put in place to limit exposure.

Long-Term Security Practices

Implementing stringent access controls, regularly monitoring the system for suspicious activities, and conducting security trainings for personnel can enhance long-term security posture.

Patching and Updates

Vendor patches for CODESYS Development System and CODESYS Scripting should be promptly applied to remediate the vulnerability and protect systems from potential exploitation. Regularly updating software and maintaining secure configurations are vital for ongoing protection against emerging threats.