CVE-2020-2112 : Vulnerability Insights and Analysis

Jenkins Git Parameter Plugin 0.9.11 and earlier versions are vulnerable to stored cross-site scripting attacks.

Understanding CVE-2020-2112

This CVE involves a security vulnerability in the Jenkins Git Parameter Plugin that allows stored cross-site scripting attacks.

What is CVE-2020-2112?

CVE-2020-2112 is a vulnerability in Jenkins Git Parameter Plugin versions 0.9.11 and earlier, where the parameter name displayed on the UI is not properly escaped, enabling malicious users with Job/Configure permission to execute cross-site scripting attacks.

The Impact of CVE-2020-2112

The vulnerability can be exploited by attackers with specific permissions to inject malicious scripts into the parameter name, potentially leading to unauthorized access, data theft, or further attacks within the Jenkins environment.

Technical Details of CVE-2020-2112

The technical details of the CVE provide insight into the vulnerability and its implications.

Vulnerability Description

Jenkins Git Parameter Plugin versions 0.9.11 and earlier do not properly escape the parameter name displayed on the UI, allowing for stored cross-site scripting attacks by users with Job/Configure permission.

Affected Systems and Versions

Product: Jenkins Git Parameter Plugin
Vendor: Jenkins project
Vulnerable Versions:
0.9.4 (custom version)
<= 0.9.11 (custom version)

Exploitation Mechanism

The vulnerability can be exploited by users with Job/Configure permission by injecting malicious scripts into the parameter name field on the Jenkins UI.

Mitigation and Prevention

Protecting systems from CVE-2020-2112 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins Git Parameter Plugin to a non-vulnerable version.
Restrict Job/Configure permissions to trusted users only.
Regularly monitor and audit Jenkins configurations for unauthorized changes.

Long-Term Security Practices

Implement secure coding practices to prevent cross-site scripting vulnerabilities.
Educate users on the risks of executing scripts from untrusted sources.
Stay informed about security advisories and updates related to Jenkins plugins.

Patching and Updates

Apply patches and updates provided by Jenkins project to address the vulnerability.