CVE-2020-2230 : What You Need to Know
Learn about CVE-2020-2230, a stored cross-site scripting (XSS) vulnerability in Jenkins 2.251 and earlier, LTS 2.235.3 and earlier, allowing attackers to execute malicious scripts. Find mitigation steps and prevention measures.
Jenkins 2.251 and earlier, LTS 2.235.3 and earlier are vulnerable to stored cross-site scripting (XSS) due to unescaped project naming strategy descriptions.
Understanding CVE-2020-2230
This CVE involves a security vulnerability in Jenkins that allows stored XSS attacks.
What is CVE-2020-2230?
CVE-2020-2230 is a vulnerability in Jenkins versions 2.251 and earlier, LTS 2.235.3 and earlier, where the project naming strategy description is not properly escaped, leading to a stored cross-site scripting vulnerability.
The Impact of CVE-2020-2230
This vulnerability can be exploited by users with Overall/Manage permission, potentially allowing malicious actors to execute arbitrary scripts within the context of the affected Jenkins instance.
Technical Details of CVE-2020-2230
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue arises from the lack of proper escaping in the project naming strategy description, enabling attackers to inject malicious scripts.
Affected Systems and Versions
- Jenkins versions 2.251 and earlier
- LTS versions 2.235.3 and earlier
Exploitation Mechanism
Attackers with Overall/Manage permission can exploit this vulnerability by injecting malicious scripts into the project naming strategy description field.
Mitigation and Prevention
Protecting systems from CVE-2020-2230 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade Jenkins to a patched version that addresses the XSS vulnerability.
- Restrict Overall/Manage permissions to trusted users only.
- Regularly monitor and audit project naming strategy descriptions for suspicious content.
Long-Term Security Practices
- Implement secure coding practices to prevent XSS vulnerabilities.
- Educate users on the risks of XSS attacks and how to identify and report suspicious activities.
Patching and Updates
Ensure timely installation of security patches and updates provided by Jenkins to mitigate the CVE-2020-2230 vulnerability.