CVE-2020-2255: Missing permission check in Blue Ocean Plugin
Summary
CVE-2020-2255: Missing permission check in Blue Ocean Plugin. Affects io.jenkins.blueocean:blueocean versions < 1.23.3. Fixed in 1.23.3. How to fix ↓
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Background
The Blue Ocean Plugin is a Maven package that provides a user-friendly interface for Jenkins, an open-source automation server. It enhances the Jenkins user experience by offering a modern and intuitive UI for visualizing and managing continuous integration and delivery pipelines. The plugin allows users to create, configure, and monitor pipelines, as well as view detailed reports and analytics. However, a vulnerability has been identified in versions 1.23.2 and earlier of the Blue Ocean Plugin.
Vulnerability Detail
The vulnerability in the Blue Ocean Plugin arises from the lack of permission checks in several HTTP endpoints that implement connection tests. While the HTTP request itself is legitimate, the plugin fails to verify the permissions of the user performing the request. This oversight enables attackers with Overall/Read permission to connect to a URL specified by the attacker. The impact of this vulnerability could range from unauthorized access to sensitive information to potential remote code execution.
How To Fix
Minimum fixed version
1.23.3
This is the first release that contains the fix.
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Workaround
There is no known workaround for this vulnerability. It is essential to update to the fixed version of the Blue Ocean Plugin to eliminate the risk of exploitation.
Conclusion
The Blue Ocean Plugin versions 1.23.2 and earlier are affected by a vulnerability that allows attackers with Overall/Read permission to connect to an attacker-specified URL. To mitigate this vulnerability, users should update to Blue Ocean Plugin version 1.23.3 or later. It is recommended to promptly update installations to ensure the security of Jenkins environments. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Blue Ocean Plugin is a Maven package that provides a user-friendly interface for Jenkins, an open-source automation server. It enhances the Jenkins user experience by offering a modern and intuitive UI for visualizing and managing continuous integration and delivery pipelines.
The vulnerability allows attackers with Overall/Read permission to connect to a URL specified by the attacker. This could lead to unauthorized access to sensitive information or potential remote code execution.
To fix this vulnerability, it is recommended to update to Blue Ocean Plugin version 1.23.3 or later. This version introduces a fix by requiring Item/Create permission to perform connection tests.
No, there is no known workaround for this vulnerability. It is crucial to update to the fixed version of the Blue Ocean Plugin.
For more information about this vulnerability, you can refer to the CVE-2020-2255 entry or contact the developers of the Blue Ocean Plugin.
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