CVE-2017-2650 : What You Need to Know
Discover how CVE-2017-2650 affects Jenkins with the Pipeline: Classpath Step plugin, allowing certain users to bypass the Script Security sandbox. Learn mitigation steps and long-term security practices.
This CVE involves a vulnerability in the Pipeline: Classpath Step Jenkins plugin that allows certain users to bypass the Script Security sandbox in Jenkins.
Understanding CVE-2017-2650
This CVE, published on March 20, 2017, highlights a security issue in the Jenkins project's Pipeline: Classpath Step plugin.
What is CVE-2017-2650?
The vulnerability in the Pipeline: Classpath Step Jenkins plugin enables users with specific permissions to circumvent the Script Security sandbox, potentially leading to unauthorized actions.
The Impact of CVE-2017-2650
The security flaw allows users with SCM commit access and Job/Configure permissions in Jenkins to bypass the Script Security sandbox, posing a risk of unauthorized script execution.
Technical Details of CVE-2017-2650
This section delves into the technical aspects of the CVE.
Vulnerability Description
The use of the Pipeline: Classpath Step Jenkins plugin permits users with certain permissions to bypass the Script Security sandbox, compromising the security of Jenkins instances.
Affected Systems and Versions
- Product: Pipeline: Classpath Step Jenkins plugin
- Vendor: Jenkins project
- Affected Version: all
Exploitation Mechanism
Users with SCM commit access and Job/Configure permissions can exploit this vulnerability to execute scripts outside the Script Security sandbox.
Mitigation and Prevention
Protecting systems from CVE-2017-2650 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable or restrict access to the affected plugin for users with SCM commit access and Job/Configure permissions.
- Monitor Jenkins instances for any unauthorized script executions.
Long-Term Security Practices
- Regularly review and update Jenkins plugins to ensure the latest security patches are applied.
- Implement the principle of least privilege to restrict user permissions and minimize the impact of potential vulnerabilities.
Patching and Updates
- Check for patches or updates provided by Jenkins project to address the CVE-2017-2650 vulnerability.