CVE-2019-10431 Explained : Impact and Mitigation
Learn about CVE-2019-10431 affecting Jenkins Script Security Plugin versions 1.64 and earlier. Find out how attackers could execute arbitrary code within sandboxed scripts and steps to mitigate the vulnerability.
Jenkins Script Security Plugin versions 1.64 and below had a vulnerability that could bypass the sandbox, allowing attackers to execute arbitrary code within sandboxed scripts.
Understanding CVE-2019-10431
This CVE relates to a sandbox bypass vulnerability in the Jenkins Script Security Plugin.
What is CVE-2019-10431?
The vulnerability in Jenkins Script Security Plugin versions 1.64 and earlier allowed attackers to execute any code they wanted within sandboxed scripts by exploiting how the plugin handled default parameter expressions in constructors.
The Impact of CVE-2019-10431
Exploiting this vulnerability could lead to unauthorized execution of arbitrary code within the context of sandboxed scripts, potentially compromising the security and integrity of the Jenkins environment.
Technical Details of CVE-2019-10431
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in Jenkins Script Security Plugin versions 1.64 and earlier allowed a sandbox bypass related to the handling of default parameter expressions in constructors, enabling the execution of arbitrary code within sandboxed scripts.
Affected Systems and Versions
- Product: Jenkins Script Security Plugin
- Vendor: Jenkins project
- Versions Affected: 1.64 and earlier
Exploitation Mechanism
Attackers could exploit this vulnerability by manipulating default parameter expressions in constructors to execute unauthorized code within sandboxed scripts.
Mitigation and Prevention
Protecting systems from CVE-2019-10431 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Jenkins Script Security Plugin to a non-vulnerable version.
- Monitor and restrict plugin usage to trusted sources.
- Implement strict input validation to prevent code injection.
Long-Term Security Practices
- Regularly update all Jenkins plugins and software components.
- Conduct security audits and penetration testing to identify vulnerabilities.
- Educate users on secure coding practices and the risks of code execution vulnerabilities.
Patching and Updates
- Apply security patches provided by Jenkins project promptly.
- Stay informed about security advisories and updates from Jenkins to address potential vulnerabilities.