CVE-2019-1003006 Explained : Impact and Mitigation
Learn about CVE-2019-1003006, a vulnerability in Jenkins Groovy Plugin allowing attackers to execute arbitrary code on the Jenkins master JVM. Find mitigation steps here.
The Jenkins Groovy Plugin version 2.0 and earlier contain a vulnerability that allows attackers to execute arbitrary code on the Jenkins master JVM.
Understanding CVE-2019-1003006
This CVE involves a sandbox bypass vulnerability in the Jenkins Groovy Plugin.
What is CVE-2019-1003006?
A vulnerability in the Jenkins Groovy Plugin version 2.0 and earlier allows attackers with specific permissions to submit a Groovy script to an HTTP endpoint, potentially leading to arbitrary code execution on the Jenkins master JVM.
The Impact of CVE-2019-1003006
Exploiting this vulnerability can result in unauthorized execution of code on the Jenkins master JVM, posing a significant security risk to the affected systems.
Technical Details of CVE-2019-1003006
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability exists in the file StringScriptSource.java within the Jenkins Groovy Plugin, enabling attackers with Overall/Read permission to upload a Groovy script to an HTTP endpoint, allowing for arbitrary code execution.
Affected Systems and Versions
- Product: Jenkins Groovy Plugin
- Vendor: Jenkins project
- Versions Affected: 2.0 and earlier
Exploitation Mechanism
Attackers with Overall/Read permission can exploit the vulnerability by submitting a malicious Groovy script to an HTTP endpoint, potentially leading to the execution of unauthorized code on the Jenkins master JVM.
Mitigation and Prevention
Protecting systems from CVE-2019-1003006 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the Jenkins Groovy Plugin to a non-vulnerable version.
- Restrict access permissions to prevent unauthorized script submissions.
Long-Term Security Practices
- Regularly monitor and audit Jenkins configurations and plugins.
- Educate users on secure coding practices and the risks of unauthorized script execution.
Patching and Updates
Ensure timely installation of security patches and updates for the Jenkins Groovy Plugin to mitigate the vulnerability.