CVE-2021-34599 : Exploit Details and Defense Strategies

A security vulnerability has been identified in CODESYS Git versions prior to V1.1.0.0 that lack certificate validation in HTTPS handshakes, making them susceptible to man-in-the-middle attacks.

Understanding CVE-2021-34599

This CVE details the improper certificate validation issue in CODESYS Git, impacting the security of the software.

What is CVE-2021-34599?

Affected versions of CODESYS Git do not implement certificate validation, leaving the server connection vulnerable to man-in-the-middle attacks.

The Impact of CVE-2021-34599

The vulnerability allows threat actors to intercept and potentially manipulate data transmitted between the user and the server, posing a high risk to confidentiality and integrity.

Technical Details of CVE-2021-34599

The technical aspects of the vulnerability in CODESYS Git.

Vulnerability Description

CODESYS Git versions before V1.1.0.0 do not verify the validity of HTTPS certificates, exposing users to potential security breaches.

Affected Systems and Versions

The issue impacts CODESYS Git versions earlier than V1.1.0.0.

Exploitation Mechanism

Attackers can exploit this vulnerability by intercepting the insecure connection between the user and the server, compromising data confidentiality and integrity.

Mitigation and Prevention

Steps to address and prevent CVE-2021-34599 in CODESYS Git.

Immediate Steps to Take

CODESYS GmbH has released CODESYS Git V1.1.0.0 to address this vulnerability. Users should update to this version promptly.

Long-Term Security Practices

Implementing secure coding practices, regular security assessments, and staying updated on software patches can enhance overall system security.

Patching and Updates

Install CODESYS Git V1.1.0.0, available through the CODESYS Installer, requiring a minimum CODESYS Development System version of V3.5.17.0.