CVE-2019-1003029 : Exploit Details and Defense Strategies

A vulnerability in the Jenkins Script Security Plugin allows attackers with specific permissions to execute arbitrary code on the Jenkins master JVM.

Understanding CVE-2019-1003029

This CVE involves a sandbox bypass vulnerability in the Jenkins Script Security Plugin, affecting versions 1.53 and earlier.

What is CVE-2019-1003029?

Attackers with Overall/Read permission can exploit this vulnerability to execute any code on the Jenkins master JVM.
The affected source files are GroovySandbox.java and SecureGroovyScript.java.

The Impact of CVE-2019-1003029

Attackers can execute arbitrary code on the Jenkins master JVM, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2019-1003029

This section provides more technical insights into the vulnerability.

Vulnerability Description

A sandbox bypass vulnerability exists in Jenkins Script Security Plugin 1.53 and earlier.
Attackers with specific permissions can execute arbitrary code on the Jenkins master JVM.

Affected Systems and Versions

Product: Jenkins Script Security Plugin
Vendor: Jenkins project
Versions: 1.53 and earlier

Exploitation Mechanism

Attackers with Overall/Read permission can exploit the vulnerability to execute code on the Jenkins master JVM.

Mitigation and Prevention

Protect your systems from CVE-2019-1003029 with these steps.

Immediate Steps to Take

Update Jenkins Script Security Plugin to a non-vulnerable version.
Restrict Overall/Read permissions to minimize the attack surface.

Long-Term Security Practices

Regularly monitor and audit Jenkins configurations and permissions.
Educate users on secure coding practices and permissions management.

Patching and Updates

Apply security patches and updates promptly to mitigate known vulnerabilities.