CVE-2020-2140 : What You Need to Know
Learn about CVE-2020-2140, a reflected cross-site scripting vulnerability in Jenkins Audit Trail Plugin versions 3.2 and earlier. Find mitigation steps and best practices for enhanced security.
Jenkins Audit Trail Plugin 3.2 and earlier versions are vulnerable to reflected cross-site scripting due to unescaped error messages in the URL Patterns field form validation.
Understanding CVE-2020-2140
This CVE identifies a security vulnerability in Jenkins Audit Trail Plugin versions 3.2 and below.
What is CVE-2020-2140?
CVE-2020-2140 is a reflected cross-site scripting vulnerability in Jenkins Audit Trail Plugin versions 3.2 and earlier. The issue arises from unescaped error messages in the URL Patterns field form validation.
The Impact of CVE-2020-2140
The vulnerability could allow an attacker to execute malicious scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2020-2140
Jenkins Audit Trail Plugin 3.2 and earlier versions are susceptible to this security flaw.
Vulnerability Description
The error message for the URL Patterns field form validation is not properly escaped, enabling an attacker to inject and execute arbitrary scripts.
Affected Systems and Versions
- Product: Jenkins Audit Trail Plugin
- Vendor: Jenkins project
- Versions Affected: <= 3.2 (unspecified version type)
Exploitation Mechanism
The vulnerability can be exploited by crafting malicious input in the URL Patterns field, triggering the execution of unauthorized scripts in the user's browser.
Mitigation and Prevention
To address CVE-2020-2140 and enhance overall security:
Immediate Steps to Take
- Upgrade Jenkins Audit Trail Plugin to a patched version.
- Implement input validation mechanisms to sanitize user inputs.
- Regularly monitor and audit security configurations.
Long-Term Security Practices
- Conduct regular security training for developers on secure coding practices.
- Employ web application firewalls to filter and block malicious traffic.
- Stay informed about security advisories and promptly apply patches.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate known vulnerabilities.