CVE-2019-1003031 Explained : Impact and Mitigation
Learn about CVE-2019-1003031, a security flaw in Jenkins Matrix Project Plugin allowing unauthorized code execution. Find mitigation steps and prevention measures here.
The Jenkins Matrix Project Plugin version 1.13 and earlier contain a vulnerability that allows attackers with Job/Configure permission to execute unauthorized code on the Jenkins master JVM.
Understanding CVE-2019-1003031
This CVE involves a sandbox bypass vulnerability in the Jenkins Matrix Project Plugin, potentially leading to the execution of arbitrary code.
What is CVE-2019-1003031?
This CVE refers to a security flaw in versions 1.13 and earlier of the Jenkins Matrix Project Plugin. Attackers with specific permissions can exploit this vulnerability to run unauthorized code on the Jenkins master JVM.
The Impact of CVE-2019-1003031
The vulnerability in the Jenkins Matrix Project Plugin can result in unauthorized code execution on the Jenkins master JVM, posing a significant security risk to affected systems.
Technical Details of CVE-2019-1003031
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability exists in the files pom.xml and src/main/java/hudson/matrix/FilterScript.java of the Jenkins Matrix Project Plugin, allowing attackers with Job/Configure permission to execute arbitrary code on the Jenkins master JVM.
Affected Systems and Versions
- Product: Jenkins Matrix Project Plugin
- Vendor: Jenkins project
- Vulnerable Versions: 1.13 and earlier
Exploitation Mechanism
Attackers with Job/Configure permission can exploit the vulnerability by running unauthorized code on the Jenkins master JVM.
Mitigation and Prevention
Protecting systems from CVE-2019-1003031 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the Jenkins Matrix Project Plugin to a non-vulnerable version.
- Restrict Job/Configure permissions to trusted users only.
Long-Term Security Practices
- Regularly monitor and update Jenkins plugins to patch vulnerabilities.
- Implement the principle of least privilege to limit user permissions.
Patching and Updates
Ensure timely installation of security patches and updates for Jenkins and its associated plugins to mitigate the risk of exploitation.