CVE-2022-34195: Cross-site Scripting in Jenkins Repository Connector Plugin
Summary
CVE-2022-34195: Cross-site Scripting in Jenkins Repository Connector Plugin. Affects org.jenkins-ci.plugins:repository-connector versions < 2.2.0. No fix is published. How to fix ↓
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Background
Jenkins Repository Connector Plugin is a Maven plugin used in the Jenkins automation server. It allows users to configure and manage Maven repositories for their projects. The plugin provides functionality to define parameters for Maven Repository Artifacts. These parameters, such as name and description, are displayed on various views in Jenkins. However, versions 2.2.0 and earlier of the plugin do not properly escape the name and description parameters, making them vulnerable to cross-site scripting (XSS) attacks.
Vulnerability Detail
The vulnerability in Jenkins Repository Connector Plugin allows attackers with Item/Configure permission to exploit a stored cross-site scripting (XSS) vulnerability. By injecting malicious scripts into the name or description parameters of Maven Repository Artifacts, an attacker can execute arbitrary code in the context of other users accessing views that display these parameters. This can lead to various security risks, including unauthorized access, data theft, and privilege escalation. The vulnerability can be exploited if the parameters are listed on vulnerable pages, such as the 'Build With Parameters' and 'Parameters' pages, which have not been hardened to prevent XSS attacks.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If upgrading the plugin is not immediately feasible, a temporary workaround is to ensure that the vulnerable pages, such as 'Build With Parameters' and 'Parameters', are hardened to prevent XSS attacks. This can be achieved by implementing input sanitization and output encoding techniques to properly handle user-supplied data. It is recommended to consult security best practices and guidelines for web application development to implement these measures effectively.
Conclusion
The Jenkins Repository Connector Plugin is vulnerable to a stored cross-site scripting (XSS) vulnerability, which can be exploited by attackers with Item/Configure permission. Upgrading to the latest version of the plugin and implementing proper security measures is crucial to mitigate the risk. It is recommended to regularly update Jenkins and its plugins to ensure the latest security patches are applied. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The vulnerability allows attackers to execute arbitrary code in the context of other users accessing views that display the vulnerable parameters. This can lead to unauthorized access, data theft, and privilege escalation.
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, using just the pom.xml file.
The recommended mitigation is to upgrade Jenkins Repository Connector Plugin to version 2.2.1 or later. Additionally, hardening the vulnerable pages to prevent XSS attacks can provide temporary protection.
Yes, the CVSS score for this vulnerability is 8.0, indicating a high severity level.
You can find more information about this vulnerability in the Jenkins security advisory for CVE-2022-34195 (https://www.jenkins.io/security/advisory/2022-06-24/).
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