CVE-2021-21638: CSRF vulnerability in Jenkins Team Foundation Server Plugin allows capturing credentials
Summary
CVE-2021-21638: CSRF vulnerability in Jenkins Team Foundation Server Plugin allow capturing credentials. Affects org.jenkins-ci.plugins:tfs versions < 5.157.1. No fix is published. How to fix ↓
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Background
The Jenkins Team Foundation Server Plugin is a Maven-based package that provides integration between Jenkins and Microsoft Team Foundation Server (TFS). It allows users to connect their Jenkins instance with TFS to perform various tasks such as building, testing, and deploying applications. The plugin facilitates seamless collaboration between development and operations teams by enabling continuous integration and delivery workflows. However, the plugin is vulnerable to a cross-site request forgery (CSRF) attack, which can lead to the capture of stored credentials in Jenkins.
Vulnerability Detail
The CSRF vulnerability in Jenkins Team Foundation Server Plugin (version 5.157.1 and earlier) allows attackers to connect to a URL of their choice using credentials obtained through another method. By exploiting this vulnerability, an attacker can trick a user into performing unintended actions on their behalf, potentially leading to unauthorized access, data leakage, or other malicious activities. In this specific case, the attacker can capture credentials stored in Jenkins, compromising the security of the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable or remove the Jenkins Team Foundation Server Plugin if it is not essential for their workflows. This will eliminate the risk of CSRF attacks through this specific plugin. However, this workaround may impact the integration between Jenkins and TFS, so it should be carefully evaluated before implementation.
Conclusion
The CSRF vulnerability in Jenkins Team Foundation Server Plugin exposes users to the risk of unauthorized access and data leakage. It is crucial to promptly update the plugin to the latest version and follow secure coding practices to prevent CSRF attacks. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for org.jenkins-ci.plugins:tfs →
FAQ
Cross-Site Request Forgery (CSRF) is a type of attack where an attacker tricks a user into performing unintended actions on a web application. In the context of this vulnerability, it allows an attacker to connect to a specified URL using stolen credentials, potentially leading to unauthorized access or data leakage.
You can use Vulert's playground (https://vulert.com/scanner) to check if your Jenkins installation is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, and you can verify the impact of this vulnerability without any signup or installation.
The CSRF vulnerability in Jenkins Team Foundation Server Plugin can result in the capture of stored credentials in Jenkins. This can lead to unauthorized access to sensitive information, data leakage, or other malicious activities performed by the attacker using the compromised credentials.
Yes, a fix is available for this vulnerability. Users should upgrade the Jenkins Team Foundation Server Plugin to version 5.157.2 or later. The updated version includes security patches that address the CSRF vulnerability.
Disabling or removing the Jenkins Team Foundation Server Plugin can temporarily mitigate the vulnerability. However, this may impact the integration between Jenkins and TFS, so it should be carefully evaluated before implementing this workaround.
Related vulnerabilities
Recent vulnerabilities recorded for org.jenkins-ci.plugins:tfs.
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