CVE-2020-13563 : Security Advisory and Response
Learn about CVE-2020-13563, a critical cross-site scripting vulnerability in phpGACL 3.3.7 allowing arbitrary JavaScript execution. Find mitigation steps and long-term security practices.
A cross-site scripting vulnerability in phpGACL 3.3.7 allows arbitrary JavaScript execution via crafted HTTP requests.
Understanding CVE-2020-13563
What is CVE-2020-13563?
This CVE identifies a cross-site scripting vulnerability in the template functionality of phpGACL 3.3.7, enabling attackers to execute arbitrary JavaScript.
The Impact of CVE-2020-13563
The vulnerability has a CVSS base score of 9.6 (Critical) with high impacts on confidentiality, integrity, and availability. It requires user interaction but no privileges.
Technical Details of CVE-2020-13563
Vulnerability Description
- Affects phpGACL 3.3.7 template functionality
- Allows arbitrary JavaScript execution
Affected Systems and Versions
- phpGACL 3.3.7
- OpenEMR 5.0.2
- OpenEMR development version 6.0.0
Exploitation Mechanism
- Crafted HTTP request targeting phpGACL template group_id parameter
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches or updates
- Implement input validation to sanitize user inputs
Long-Term Security Practices
- Regular security assessments and audits
- Educate users on safe browsing habits
Patching and Updates
- Check for security advisories and apply patches promptly