CVE-2020-2256 Explained : Impact and Mitigation
Learn about CVE-2020-2256 affecting Jenkins Pipeline Maven Integration Plugin <= 3.9.2. Understand the XSS vulnerability impact, affected systems, and mitigation steps.
Jenkins Pipeline Maven Integration Plugin 3.9.2 and earlier versions are vulnerable to stored cross-site scripting (XSS) attacks due to improper handling of the upstream job's display name.
Understanding CVE-2020-2256
This CVE affects the Jenkins Pipeline Maven Integration Plugin, allowing attackers with Job/Configure permission to exploit a cross-site scripting vulnerability.
What is CVE-2020-2256?
The vulnerability in Jenkins Pipeline Maven Integration Plugin allows attackers to execute malicious scripts through the display name of an upstream job, posing a security risk.
The Impact of CVE-2020-2256
The XSS vulnerability can be exploited by attackers with specific permissions, potentially leading to unauthorized script execution and manipulation of Jenkins build processes.
Technical Details of CVE-2020-2256
The technical aspects of the CVE provide insight into the vulnerability's description, affected systems, and the exploitation mechanism.
Vulnerability Description
The issue arises from the plugin's failure to properly escape the display name of an upstream job, enabling attackers to inject and execute malicious scripts.
Affected Systems and Versions
- Product: Jenkins Pipeline Maven Integration Plugin
- Vendor: Jenkins project
- Versions Affected: <= 3.9.2 (unspecified version type)
Exploitation Mechanism
Attackers with Job/Configure permission can exploit the vulnerability by manipulating the display name of an upstream job, triggering the execution of unauthorized scripts.
Mitigation and Prevention
To address CVE-2020-2256 and enhance system security, immediate steps and long-term practices are crucial.
Immediate Steps to Take
- Update the Jenkins Pipeline Maven Integration Plugin to a patched version.
- Restrict Job/Configure permissions to trusted users only.
Long-Term Security Practices
- Regularly monitor and audit Jenkins plugins for security vulnerabilities.
- Educate users on safe scripting practices and the risks of XSS attacks.
Patching and Updates
Ensure timely installation of security patches and updates for Jenkins and its associated plugins to mitigate known vulnerabilities.