CVE-2020-15119 : Exploit Details and Defense Strategies
Learn about CVE-2020-15119, a DOM-based XSS vulnerability in auth0-lock versions <= 11.25.1. Understand the impact, technical details, and mitigation steps to secure your systems.
In auth0-lock versions before and including 11.25.1, dangerouslySetInnerHTML is used to update the DOM, potentially exposing the application to cross-site scripting (XSS) attacks.
Understanding CVE-2020-15119
In this CVE, a vulnerability in auth0-lock versions allows for DOM-based XSS attacks, impacting confidentiality and integrity.
What is CVE-2020-15119?
DOM-based XSS vulnerability in auth0-lock versions <= 11.25.1, where the use of dangerouslySetInnerHTML can lead to XSS attacks.
The Impact of CVE-2020-15119
- CVSS Base Score: 6.4 (Medium)
- Attack Complexity: High
- Attack Vector: Network
- Confidentiality Impact: High
- Integrity Impact: High
- User Interaction: Required
Technical Details of CVE-2020-15119
This section covers the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from the use of dangerouslySetInnerHTML in updating the DOM, enabling attackers to execute malicious scripts.
Affected Systems and Versions
- Affected Product: lock
- Vendor: auth0
- Affected Versions: <= 11.25.1
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious scripts through the dangerouslySetInnerHTML method.
Mitigation and Prevention
Protecting systems from this vulnerability is crucial to ensure security.
Immediate Steps to Take
- Update auth0-lock to a version beyond 11.25.1 to mitigate the vulnerability.
- Implement input validation to prevent XSS attacks.
Long-Term Security Practices
- Regularly monitor and update dependencies to address security issues promptly.
- Educate developers on secure coding practices to prevent similar vulnerabilities.
Patching and Updates
- Stay informed about security advisories from auth0 and apply patches promptly to secure the application.