CVE-2020-2190 : What You Need to Know
Learn about CVE-2020-2190 affecting Jenkins Script Security Plugin versions 1.72 and earlier. Find out how to mitigate the stored cross-site scripting vulnerability and protect your system.
Jenkins Script Security Plugin 1.72 and earlier versions are vulnerable to stored cross-site scripting due to improper handling of classpath entries.
Understanding CVE-2020-2190
Jenkins Script Security Plugin versions 1.72 and below have a security flaw that allows stored cross-site scripting attacks.
What is CVE-2020-2190?
This CVE identifies a vulnerability in Jenkins Script Security Plugin versions 1.72 and earlier, where unescaped classpath entries on the In-process Script Approval page can lead to stored cross-site scripting.
The Impact of CVE-2020-2190
The vulnerability can be exploited by an attacker to inject malicious scripts into the application, potentially leading to unauthorized access, data theft, or further attacks.
Technical Details of CVE-2020-2190
Jenkins Script Security Plugin's vulnerability is detailed below:
Vulnerability Description
- Jenkins Script Security Plugin 1.72 and earlier mishandles pending or approved classpath entries, allowing for stored cross-site scripting.
Affected Systems and Versions
- Product: Jenkins Script Security Plugin
- Vendor: Jenkins project
- Versions Affected: <= 1.72 (unspecified version type)
Exploitation Mechanism
- Attackers can exploit this vulnerability by injecting malicious scripts into the In-process Script Approval page, taking advantage of unescaped classpath entries.
Mitigation and Prevention
To address CVE-2020-2190, consider the following steps:
Immediate Steps to Take
- Upgrade Jenkins Script Security Plugin to a version beyond 1.72 that includes a patch for the vulnerability.
- Monitor and restrict access to the In-process Script Approval page.
Long-Term Security Practices
- Regularly update Jenkins and its plugins to the latest versions to ensure security patches are applied.
- Educate users on secure coding practices to prevent cross-site scripting vulnerabilities.
Patching and Updates
- Stay informed about security advisories from Jenkins project and promptly apply recommended patches to mitigate known vulnerabilities.