CVE-2021-21626 Explained : Impact and Mitigation
Discover the impact and technical details of CVE-2021-21626 affecting Jenkins Warnings Next Generation Plugin version 8.4.4 and earlier. Learn how to mitigate this security vulnerability.
Jenkins Warnings Next Generation Plugin version 8.4.4 and earlier is vulnerable to a security issue that allows attackers with specific permissions to access sensitive information. Here's what you need to know about CVE-2021-21626.
Understanding CVE-2021-21626
This vulnerability affects Jenkins Warnings Next Generation Plugin versions 8.4.4 and earlier, exposing a flaw that could be exploited by attackers with certain permissions.
What is CVE-2021-21626?
The CVE-2021-21626 vulnerability in Jenkins Warnings Next Generation Plugin allows attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check file patterns in the workspace.
The Impact of CVE-2021-21626
The impact of this vulnerability enables unauthorized access to workspace contents, potentially leading to sensitive data exposure or unauthorized file manipulation.
Technical Details of CVE-2021-21626
This section dives into the technical aspects of the CVE-2021-21626 vulnerability.
Vulnerability Description
Jenkins Warnings Next Generation Plugin version 8.4.4 and below lack proper permission checks in form validation methods, exposing a security gap for attackers to exploit.
Affected Systems and Versions
The vulnerability affects all versions of Jenkins Warnings Next Generation Plugin up to and including 8.4.4. Version 8.4.3.1 is not impacted.
Exploitation Mechanism
Attackers with Item/Read permission and without Item/Workspace or Item/Configure permission can exploit this vulnerability to verify if specific file patterns match the workspace contents.
Mitigation and Prevention
To address CVE-2021-21626, follow these mitigation strategies.
Immediate Steps to Take
Ensure that proper permission controls are in place for Jenkins Warnings Next Generation Plugin to prevent unauthorized access. Consider upgrading to a patched version or applying relevant security configurations.
Long-Term Security Practices
Implement a robust permission structure within Jenkins to limit access based on the principle of least privilege. Regularly review and update permissions to align with security best practices.
Patching and Updates
Stay informed about security advisories from Jenkins project and promptly apply updates or patches to mitigate any known vulnerabilities.