CVE-2019-3965 : What You Need to Know

OpenEMR versions 5.0.1 and earlier contain a vulnerability in the controller.php file that allows attackers to execute unauthorized code within a user's session.

Understanding CVE-2019-3965

This CVE involves a Cross Site Scripting (XSS) vulnerability in OpenEMR.

What is CVE-2019-3965?

In OpenEMR 5.0.1 and earlier, the controller.php file is susceptible to a reflected XSS vulnerability in the document_id parameter, enabling attackers to run arbitrary code within a user's session.

The Impact of CVE-2019-3965

This vulnerability could lead to unauthorized code execution within a user's session, potentially compromising sensitive data and system integrity.

Technical Details of CVE-2019-3965

OpenEMR version 5.0.1 and earlier are affected by this XSS vulnerability.

Vulnerability Description

The controller.php file in OpenEMR versions 5.0.1 and earlier has a flaw in the document_id parameter, allowing attackers to execute unauthorized code within a user's session.

Affected Systems and Versions

Product: OpenEMR
Versions Affected: 5.0.1 and earlier

Exploitation Mechanism

Attackers can exploit the document_id parameter in the controller.php file to inject and execute malicious code within a user's session.

Mitigation and Prevention

Immediate Steps to Take:

Update OpenEMR to the latest version to patch the vulnerability.
Monitor system logs for any suspicious activities related to unauthorized code execution. Long-Term Security Practices:
Regularly conduct security audits and vulnerability assessments on OpenEMR installations.
Educate users on safe browsing practices and the importance of avoiding suspicious links.
Implement web application firewalls and input validation mechanisms to mitigate XSS risks.
Stay informed about security updates and patches released by OpenEMR.
Collaborate with cybersecurity experts to enhance the overall security posture of OpenEMR installations.
Consider implementing security policies and access controls to limit the impact of potential attacks.
Regularly backup critical data to minimize the impact of successful attacks.
Engage in continuous security training and awareness programs for users and administrators.

Patching and Updates

Ensure OpenEMR is regularly updated to the latest version to address security vulnerabilities and protect against potential exploits.