CVE-2022-25209: Vulnerability in org.jenkins-ci.plugins:sinatra-chef-builder
Summary
CVE-2022-25209: Improper Restriction of XML External Entity Reference in Jenkins Chef Sinatra. Affects org.jenkins-ci.plugins:sinatra-chef-builder versions < 1.20. No fix is published. How to fix ↓
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Background
The org.jenkins-ci.plugins:sinatra-chef-builder package is a Maven ecosystem plugin for Jenkins that integrates with Chef Sinatra. It allows users to build and deploy Chef Sinatra applications directly from Jenkins. The plugin provides functionality for form validation, but it lacks proper permission checks and XML parser configuration, making it vulnerable to XML external entity (XXE) attacks.
Vulnerability Detail
The vulnerability (CVE-2022-25209) in org.jenkins-ci.plugins:sinatra-chef-builder arises from the plugin's failure to perform a permission check in a method implementing form validation. Additionally, the plugin does not configure its XML parser to prevent XXE attacks. This allows attackers to exploit the vulnerability by crafting a malicious XML response that includes external entities. By doing so, attackers can extract sensitive information from the Jenkins controller or perform server-side request forgery.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable or restrict access to the affected plugin until it can be updated to a secure version. This can be done by disabling the plugin in the Jenkins configuration or by restricting access to the plugin through Jenkins' security settings.
Conclusion
The vulnerability in org.jenkins-ci.plugins:sinatra-chef-builder exposes Jenkins instances to potential XXE attacks and server-side request forgery. It is crucial to upgrade to a secure version of the Chef Sinatra Plugin (1.21 or later) to mitigate the risk. Disabling or restricting access to the affected plugin can serve as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows attackers to extract sensitive information from the Jenkins controller or perform server-side request forgery. This can lead to unauthorized access, data leakage, and potential further compromise of the Jenkins environment.
No, versions 1.20 and earlier of the plugin are affected. The vulnerability has been addressed in version 1.21 or later.
While there is no known public exploit at the time of this report, it is important to address the vulnerability promptly to mitigate the risk of exploitation.
A temporary workaround is to disable or restrict access to the affected plugin until it can be updated to a secure version. However, upgrading to the latest version is the recommended long-term solution.
For more information about the vulnerability, you can refer to the GitHub Advisory Database entry: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/02/GHSA-38w8-h222-wrpp/GHSA-38w8-h222-wrpp.json
References
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