CVE-2019-13532 : Vulnerability Insights and Analysis

CODESYS V3 web server versions prior to 3.5.14.10 have a vulnerability that allows attackers to send customized http or https requests, potentially granting unauthorized access to files outside the controller's working directory.

Understanding CVE-2019-13532

What is CVE-2019-13532?

The CVE-2019-13532 vulnerability affects the web server of CODESYS V3, enabling attackers to exploit the server by sending specially crafted http or https requests.

The Impact of CVE-2019-13532

This vulnerability may lead to unauthorized access to files located beyond the designated working directory of the controller, posing a risk to the confidentiality and integrity of sensitive data.

Technical Details of CVE-2019-13532

Vulnerability Description

The vulnerability in CODESYS V3 web server versions prior to 3.5.14.10 arises from improper limitation of a pathname to a restricted directory, allowing for path traversal attacks.

Affected Systems and Versions

Product: CODESYS V3 web server
Vendor: n/a
Versions Affected: All versions prior to 3.5.14.10

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted http or https requests, bypassing directory restrictions and gaining unauthorized access to sensitive files.

Mitigation and Prevention

Immediate Steps to Take

Update the CODESYS V3 web server to version 3.5.14.10 or later to mitigate the vulnerability.
Implement network segmentation to limit access to the web server.

Long-Term Security Practices

Regularly monitor and audit web server logs for unusual activities.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply security patches and updates provided by the vendor to ensure the web server is protected against known vulnerabilities.