CVE-2017-1000244 in Favorite Plugin
Summary
by MITRE
Jenkins Favorite Plugin version 2.2.0 and older is vulnerable to CSRF resulting in data modification
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Analysis
by VulDB Data Team • 01/21/2021
The Jenkins Favorite Plugin vulnerability identified as CVE-2017-1000244 represents a critical cross-site request forgery weakness that affects versions 2.2.0 and earlier. This vulnerability resides within the plugin's handling of user requests and authentication mechanisms, creating a pathway for malicious actors to manipulate data without proper authorization. The flaw specifically impacts the plugin's ability to validate incoming requests, allowing attackers to execute unauthorized actions against the Jenkins instance through crafted web requests that appear legitimate to the system.
This CSRF vulnerability stems from the plugin's failure to implement proper anti-forgery token validation mechanisms. When users interact with the Jenkins Favorite Plugin, the system should verify that requests originate from authenticated users and are not being manipulated by third parties. The absence of robust token verification allows attackers to construct malicious requests that exploit the trust relationship between the web browser and the Jenkins server. The vulnerability is particularly dangerous because it enables attackers to modify data within the Jenkins environment, potentially altering build configurations, user permissions, or other critical system settings. The flaw operates at the web application level and can be exploited through various attack vectors including phishing campaigns, compromised user sessions, or direct exploitation of the vulnerable plugin interface.
The operational impact of this vulnerability extends beyond simple data modification capabilities, as it can lead to complete system compromise and unauthorized access to sensitive build environments. Attackers leveraging this vulnerability could manipulate Jenkins job configurations, alter user access controls, or even inject malicious code into the build process, potentially compromising the integrity of the entire continuous integration and deployment pipeline. The vulnerability affects organizations that rely on Jenkins for automated build processes, where unauthorized modifications could result in compromised builds, data breaches, or service disruption. The risk is amplified in environments where Jenkins serves as a central hub for software development workflows, as the compromised plugin could provide attackers with access to critical development infrastructure and sensitive source code repositories.
Organizations should immediately upgrade to Jenkins Favorite Plugin version 2.2.1 or later, which includes proper CSRF protection mechanisms and anti-forgery token implementations. The fix addresses the core issue by implementing robust validation of user requests and ensuring that all modifications require proper authentication tokens that are tied to the user's active session. Security teams should also implement additional protective measures including network segmentation of Jenkins instances, regular security audits of installed plugins, and monitoring for suspicious activity patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications, and represents a critical threat under the ATT&CK framework's privilege escalation and persistence tactics. Organizations should also consider implementing web application firewalls and request validation rules to provide additional defense-in-depth layers against similar CSRF attacks targeting their Jenkins environments.