CVE-2017-1000096 Explained : Impact and Mitigation
Learn about CVE-2017-1000096, a Jenkins vulnerability enabling arbitrary code execution. Find out how to mitigate the risk and secure your Jenkins environment.
This CVE-2017-1000096 article provides insights into a vulnerability in Jenkins that allowed for arbitrary code execution due to incomplete sandbox protection.
Understanding CVE-2017-1000096
What is CVE-2017-1000096?
The lack of adequate sandbox protection in Pipeline scripts in Jenkins enabled the execution of arbitrary code, posing a security risk to authorized users.
The Impact of CVE-2017-1000096
The vulnerability allowed authorized Jenkins users to execute any code, potentially leading to unauthorized access and malicious activities within the Jenkins environment.
Technical Details of CVE-2017-1000096
Vulnerability Description
- Incomplete sandbox protection in Pipeline scripts allowed for arbitrary code execution
- Constructors, instance variable initializers, and instance initializers were exempt from sandbox protection
Affected Systems and Versions
- Product: Jenkins
- Versions: All versions affected
Exploitation Mechanism
- Authorized Jenkins users with permission to configure Pipelines or trusted committers with access to Jenkinsfiles could exploit the vulnerability
Mitigation and Prevention
Immediate Steps to Take
- Update Jenkins to the latest version
- Restrict permissions for configuring Pipelines
Long-Term Security Practices
- Regularly review and update Jenkins security configurations
- Educate users on secure coding practices
Patching and Updates
- Apply security patches and updates provided by Jenkins to address the vulnerability