CVE-2019-1003002 : Vulnerability Insights and Analysis

Pipeline: Declarative Plugin versions 1.3.3 and earlier have a vulnerability known as sandbox bypass, allowing attackers to execute unauthorized code on the Jenkins master JVM.

Understanding CVE-2019-1003002

This CVE involves a critical vulnerability in the Pipeline: Declarative Plugin that could lead to arbitrary code execution on the Jenkins master Java Virtual Machine (JVM).

What is CVE-2019-1003002?

The vulnerability exists in versions 1.3.3 and earlier of the Pipeline: Declarative Plugin.
Attackers with Overall/Read permission can exploit this vulnerability by providing a pipeline script to an HTTP endpoint.
The vulnerability is located in the file Converter.groovy within a specific directory of the plugin.
Successful exploitation can result in the execution of unauthorized code on the Jenkins master JVM.

The Impact of CVE-2019-1003002

Attackers can potentially execute arbitrary code on the Jenkins master JVM.
Unauthorized access and manipulation of Jenkins configurations and data are possible.
This vulnerability poses a significant risk to the integrity and security of Jenkins instances.

Technical Details of CVE-2019-1003002

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability is a sandbox bypass issue in the Pipeline: Declarative Plugin.
It allows attackers with specific permissions to execute arbitrary code on the Jenkins master JVM.

Affected Systems and Versions

Pipeline: Declarative Plugin versions 1.3.3 and earlier are affected.

Exploitation Mechanism

Attackers exploit the vulnerability by supplying a pipeline script to an HTTP endpoint.
The vulnerable file Converter.groovy is located in a specific directory of the plugin.

Mitigation and Prevention

Protecting systems from CVE-2019-1003002 is crucial to maintaining security.

Immediate Steps to Take

Upgrade Pipeline: Declarative Plugin to a non-vulnerable version.
Restrict Overall/Read permissions to prevent unauthorized access.
Monitor Jenkins logs and system activity for any suspicious behavior.

Long-Term Security Practices

Regularly update Jenkins and its plugins to the latest secure versions.
Implement least privilege access controls to limit potential attack surfaces.

Patching and Updates

Apply security patches provided by Jenkins project promptly.
Stay informed about security advisories and best practices for Jenkins security.