CVE-2017-1000088 : Security Advisory and Response
Learn about CVE-2017-1000088, a vulnerability in the Sidebar Link plugin in Jenkins that allows malicious users to execute scripts. Find mitigation steps and prevention measures here.
This CVE involves a vulnerability in the Sidebar Link plugin that allows users to customize jobs, views, and agents in Jenkins, potentially leading to the execution of malicious scripts.
Understanding CVE-2017-1000088
This CVE was assigned on August 22, 2017, and made public on October 3, 2017.
What is CVE-2017-1000088?
The Sidebar Link plugin in Jenkins allows users to add entries to the sidebar of jobs, views, and agents. However, due to a lack of input validation, users could exploit this feature to include javascript: schemes in the links, posing a security risk.
The Impact of CVE-2017-1000088
The vulnerability could be exploited by malicious users to execute arbitrary scripts within the context of the Jenkins application, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2017-1000088
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The Sidebar Link plugin in Jenkins lacked input validation, allowing users to insert javascript: schemes in the links, which could be leveraged for malicious purposes.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
- Users could craft links with javascript: schemes to execute arbitrary scripts within the Jenkins application.
Mitigation and Prevention
Protecting systems from CVE-2017-1000088 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable or remove the Sidebar Link plugin if not essential for operations.
- Regularly monitor Jenkins for any suspicious activities or unauthorized changes.
Long-Term Security Practices
- Implement input validation mechanisms in plugins to prevent script injection vulnerabilities.
- Educate users on safe coding practices and the risks associated with unvalidated inputs.
Patching and Updates
- Update Jenkins to the latest version to ensure that security patches addressing this vulnerability are applied.