CVE-2019-3966 Explained : Impact and Mitigation
Learn about CVE-2019-3966 affecting OpenEMR 5.0.1 and earlier versions. Understand the XSS vulnerability, its impact, affected systems, exploitation, and mitigation steps.
OpenEMR 5.0.1 and earlier versions are vulnerable to a reflected XSS flaw in the foreign_id parameter, potentially allowing attackers to execute arbitrary code within a user's session.
Understanding CVE-2019-3966
This CVE involves a Cross Site Scripting (XSS) vulnerability in OpenEMR versions 5.0.1 and earlier.
What is CVE-2019-3966?
The foreign_id parameter in controller.php of OpenEMR 5.0.1 and older versions is susceptible to a reflected XSS vulnerability. This vulnerability could potentially enable an attacker to run arbitrary code within a user's session.
The Impact of CVE-2019-3966
The vulnerability could allow attackers to execute arbitrary code within a user's session, posing a significant security risk to affected systems.
Technical Details of CVE-2019-3966
OpenEMR 5.0.1 and earlier versions are affected by this vulnerability.
Vulnerability Description
The foreign_id parameter in controller.php of OpenEMR 5.0.1 and older versions is vulnerable to reflected XSS, enabling attackers to execute arbitrary 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 vulnerability by injecting malicious code into the foreign_id parameter, leading to the execution of arbitrary code within a user's session.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risk posed by CVE-2019-3966.
Immediate Steps to Take
- Apply security patches provided by OpenEMR promptly.
- Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.
- Monitor and restrict user input to mitigate the risk of code injection.
Long-Term Security Practices
- Regularly update and patch OpenEMR to address security vulnerabilities.
- Conduct security audits and penetration testing to identify and remediate potential vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by OpenEMR.
- Ensure timely application of patches to protect systems from known vulnerabilities.