CVE-2018-1000015 : What You Need to Know

In Jenkins instances with the Authorize Project plugin, a vulnerability exists where the build's authentication may lack necessary permissions on certain agents, allowing the execution of Pipeline

node

blocks despite incorrect permission checks in the Pipeline: Nodes and Processes plugin.

Understanding CVE-2018-1000015

What is CVE-2018-1000015?

This CVE pertains to a security issue in Jenkins instances utilizing the Authorize Project plugin, potentially leading to unauthorized execution of Pipeline

node

blocks on specific agents.

The Impact of CVE-2018-1000015

The vulnerability could result in unauthorized access and execution of commands on Jenkins agents, potentially compromising the integrity and security of the Jenkins environment.

Technical Details of CVE-2018-1000015

Vulnerability Description

The vulnerability arises from incorrect permission checks in the Pipeline: Nodes and Processes plugin version 2.17 and earlier, allowing unauthorized execution of Pipeline

node

blocks.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Pipeline: Nodes and Processes plugin version 2.17 and earlier

Exploitation Mechanism

The issue occurs due to erroneous permissions checks in the affected plugin, enabling unauthorized execution of Pipeline

node

blocks on agents lacking proper permissions.

Mitigation and Prevention

Immediate Steps to Take

Update the Pipeline: Nodes and Processes plugin to a secure version that addresses the permission check vulnerability.
Review and adjust permissions for Jenkins agents to ensure proper access controls.

Long-Term Security Practices

Regularly monitor and update Jenkins plugins to mitigate potential security vulnerabilities.
Implement least privilege principles to restrict unnecessary access to Jenkins resources.

Patching and Updates

Apply patches or updates provided by Jenkins to fix the vulnerability and enhance the security of the Jenkins environment.