CVE-2020-2211: RCE vulnerability in ElasticBox Jenkins Kubernetes CI/CD Plugin
Summary
CVE-2020-2211: RCE vulnerability in ElasticBox Jenkins Kubernetes CI/CD Plugin. Affects com.elasticbox.jenkins-ci.plugins:kubernetes-ci versions < 1.3. No fix is published. How to fix ↓
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Background
The ElasticBox Jenkins Kubernetes CI/CD Plugin is a Maven package that provides integration between Jenkins and Kubernetes for continuous integration and continuous delivery (CI/CD) workflows. It allows users to define and execute build steps using YAML input files. This plugin is vulnerable to a remote code execution (RCE) exploit due to a misconfiguration in its YAML parser.
Vulnerability Detail
The vulnerability in the ElasticBox Jenkins Kubernetes CI/CD Plugin arises from the lack of proper configuration in its YAML parser. This allows users to instantiate arbitrary types through YAML input files, leading to a remote code execution vulnerability. An attacker with the ability to provide malicious YAML input files to the plugin's build step can execute arbitrary code on the target system. The severity of this vulnerability is rated as HIGH with a CVSS score of 8.8.
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 affected plugin from their Jenkins installation until an updated version is available. This can be done by navigating to the Jenkins plugin management page and disabling or uninstalling the ElasticBox Jenkins Kubernetes CI/CD Plugin.
Conclusion
The ElasticBox Jenkins Kubernetes CI/CD Plugin is vulnerable to a remote code execution (RCE) exploit due to a misconfiguration in its YAML parser. Users are advised to update to the latest version of the plugin or disable it until a fix is available. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability allows an attacker to execute arbitrary code on systems running the vulnerable version of the ElasticBox Jenkins Kubernetes CI/CD Plugin. This can lead to unauthorized access, data breaches, and potential compromise of the entire Jenkins infrastructure.
Users of the ElasticBox Jenkins Kubernetes CI/CD Plugin versions 1.3 and earlier are affected by this vulnerability.
At the time of this advisory, there are no known public exploits specifically targeting this vulnerability. However, it is advisable to apply the recommended fixes as soon as possible to mitigate the risk.
Yes, the CVSS score for this vulnerability is 8.8, indicating a high severity level.
For more information about this vulnerability, you can refer to the GitHub Security Advisory GHSA-9r3h-wm3x-v245 or the CVE identifier CVE-2020-2211.
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