CVE-2020-2266: Stored XSS vulnerability in Description Column Plugin
Summary
CVE-2020-2266: Stored XSS vulnerability in Description Column Plugin. Affects org.jenkins-ci.plugins:description-column-plugin versions < 1.3. No fix is published. How to fix ↓
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Background
The Jenkins Description Column Plugin is a Maven-based package that provides a column displaying the job description in the Jenkins user interface. It is designed to enhance the visibility of job descriptions for better organization and management. However, versions 1.3 and earlier of this plugin are susceptible to a stored cross-site scripting (XSS) vulnerability. This vulnerability allows attackers with Job/Configure permission to exploit the plugin and execute malicious code.
Vulnerability Detail
The stored XSS vulnerability in the Jenkins Description Column Plugin arises from the failure to properly escape the job description in the column tooltip. As a result, an attacker can inject arbitrary JavaScript code into the job description, which will be executed when a user hovers over the column tooltip. This can lead to various security risks, including unauthorized access, data theft, and further exploitation of the Jenkins environment. The vulnerability has a CVSS score of 8.0, indicating a high severity level.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If upgrading to the latest version is not immediately feasible, a temporary workaround can be implemented. This involves disabling the Description Column Plugin or restricting access to users with Job/Configure permission. By disabling the plugin, the vulnerable functionality is removed, eliminating the risk of exploitation. However, this workaround may impact the visibility and usability of job descriptions in the Jenkins user interface.
Conclusion
The stored XSS vulnerability in the Jenkins Description Column Plugin poses a significant security risk to Jenkins instances. It is crucial to promptly upgrade to version 1.4 or later of the plugin to mitigate the risk of exploitation. Alternatively, disabling the plugin or restricting access to users with Job/Configure permission can serve as a temporary workaround. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The stored XSS vulnerability in the Jenkins Description Column Plugin allows attackers with Job/Configure permission to execute arbitrary JavaScript code. This can lead to unauthorized access, data theft, and further exploitation of the Jenkins environment.
You can use the Vulert Playground at Vulert Scanner to check if your Jenkins instance is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using just the pom.xml file for analysis.
Yes, the CVSS score for this vulnerability is 8.0, indicating a high severity level.
At the time of this advisory, there are no known public exploits specifically targeting this vulnerability. However, it is important to promptly apply the recommended security patches to mitigate the risk.
In addition to upgrading to the latest version of the Jenkins Description Column Plugin, it is recommended to follow secure coding practices and regularly update all Jenkins plugins to minimize the risk of vulnerabilities.
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