CVE-2022-25176 Explained : Impact and Mitigation

Jenkins Pipeline: Groovy Plugin version 2648.va9433432b33c and earlier has a vulnerability that allows attackers to read arbitrary files on the Jenkins controller file system by following symbolic links to locations outside the checkout directory for the configured SCM when reading script files.

Understanding CVE-2022-25176

This CVE impacts Jenkins Pipeline: Groovy Plugin versions 2648.va9433432b33c and earlier, potentially enabling unauthorized access to sensitive information on the Jenkins controller file system.

What is CVE-2022-25176?

CVE-2022-25176 is a security vulnerability that exists in Jenkins Pipeline: Groovy Plugin versions 2648.va9433432b33c and earlier, allowing attackers to exploit symbolic links to read arbitrary files on the Jenkins controller file system.

The Impact of CVE-2022-25176

The vulnerability can be exploited by attackers who are able to configure Pipelines to gain unauthorized access to sensitive files on the Jenkins controller file system, posing a risk of data leakage and potential system compromise.

Technical Details of CVE-2022-25176

This section provides a deeper look into the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

Jenkins Pipeline: Groovy Plugin versions 2648.va9433432b33c and earlier allow symbolic links to external locations when reading script files, enabling unauthorized access to files on the Jenkins controller file system.

Affected Systems and Versions

Affected Version: Jenkins Pipeline: Groovy Plugin <= 2648.va9433432b33c
Unaffected Versions: 2.94.1, 2.92.1

Exploitation Mechanism

Attackers with the ability to configure Pipelines can exploit this vulnerability to read arbitrary files by leveraging symbolic links.

Mitigation and Prevention

To protect your systems from CVE-2022-25176, here are some essential steps to take in terms of immediate actions and long-term security practices.

Immediate Steps to Take

Update Jenkins Pipeline: Groovy Plugin to a version that is not affected by the vulnerability (e.g., 2.94.1 or later).
Restrict access to Jenkins controllers to authorized personnel only.

Long-Term Security Practices

Regularly monitor and apply security patches and updates for Jenkins and its plugins.
Conduct regular security audits to identify and mitigate any potential vulnerabilities in the system.

Patching and Updates

Stay informed about security advisories and updates from Jenkins project and ensure timely application of patches to address known vulnerabilities.