CVE-2020-13562 : Vulnerability Insights and Analysis
Learn about CVE-2020-13562, a critical cross-site scripting vulnerability in phpGACL 3.3.7 allowing arbitrary JavaScript execution. Find mitigation steps and patching details here.
A cross-site scripting vulnerability in phpGACL 3.3.7 allows arbitrary JavaScript execution via crafted HTTP requests.
Understanding CVE-2020-13562
A critical vulnerability with a CVSS base score of 9.6.
What is CVE-2020-13562?
- The vulnerability exists in the template functionality of phpGACL 3.3.7
- Attackers can trigger arbitrary JavaScript execution by providing a specially crafted URL
The Impact of CVE-2020-13562
- Severity: Critical
- CVSS Base Score: 9.6
- Attack Vector: Network
- Attack Complexity: Low
- User Interaction: Required
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2020-13562
Affecting phpGACL 3.3.7, OpenEMR 5.0.2, and OpenEMR development version 6.0.0.
Vulnerability Description
- Cross-site scripting vulnerability in phpGACL 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 requests in the phpGACL template action parameter
Mitigation and Prevention
Immediate Steps to Take:
- Apply vendor patches or updates
- Implement input validation mechanisms
- Monitor and filter user-supplied input
Long-Term Security Practices:
- Regular security training for developers
- Conduct security audits and code reviews
- Employ web application firewalls
Patching and Updates
- Update to the latest version of phpGACL
- Apply security patches promptly