CVE-2017-1000502 : Vulnerability Insights and Analysis
Learn about CVE-2017-1000502 affecting Jenkins 1.37 and older versions, allowing unauthorized shell command execution on the master node. Find mitigation steps and best practices.
Jenkins 1.37 and older versions allowed users to execute shell commands on the master node via an EC2 agent. Subsequent changes now require 'Run Scripts' permission for agent configuration.
Understanding CVE-2017-1000502
This CVE addresses a vulnerability in Jenkins that could be exploited by users with agent creation or modification authorization.
What is CVE-2017-1000502?
Users in Jenkins 1.37 and earlier versions could configure an EC2 agent to run arbitrary shell commands on the master node during agent launch.
The Impact of CVE-2017-1000502
The vulnerability allowed unauthorized users to execute potentially harmful shell commands on the Jenkins master node, posing a significant security risk.
Technical Details of CVE-2017-1000502
This section provides detailed technical information about the CVE.
Vulnerability Description
Previously, users with agent creation or modification permissions in Jenkins 1.37 and older versions could set up an EC2 agent to execute any desired shell commands on the master node during agent launch.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability allowed users to exploit the agent configuration process to execute unauthorized shell commands on the Jenkins master node.
Mitigation and Prevention
Protect your systems from CVE-2017-1000502 with the following steps:
Immediate Steps to Take
- Ensure that only authorized users have 'Run Scripts' permission for agent configuration.
- Regularly monitor agent configurations for any unauthorized changes.
Long-Term Security Practices
- Implement the principle of least privilege by granting minimal permissions required for each user role.
- Conduct regular security training for Jenkins administrators and users to raise awareness of potential vulnerabilities.
Patching and Updates
- Update Jenkins to the latest version to ensure that security patches addressing CVE-2017-1000502 are applied.