Missing Permission Check in Jenkins Git Parameter Plugin

Executive Summary

This vulnerability is a missing permission check in the Jenkins Git Parameter Plugin version 462.vdcf3df2ed2ca_ and earlier. It allows attackers who have Item/Read permission to access information about the source code management (SCM) repository used by a Jenkins job. Specifically, they can obtain details such as branch names, tag names, and revision metadata.

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Impact Analysis

The impact of this vulnerability is that an attacker with Item/Read permission can gain unauthorized access to sensitive repository information. This could potentially expose details about the development process, branch structure, and code revisions, which might be used for further attacks or reconnaissance.

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Compliance Impact

The vulnerability allows attackers with Item/Read permission to obtain information about the SCM repository used by a Jenkins job, including branch names, tag names, and revision metadata.

However, there is no information provided in the available context or resources about how this information disclosure impacts compliance with common standards and regulations such as GDPR or HIPAA.

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Detection Guidance

This vulnerability involves a missing permission check in the Jenkins Git Parameter Plugin version 462.vdcf3df2ed2ca_ and earlier, allowing attackers with Item/Read permission to access SCM repository information.

Detection would primarily involve verifying the installed version of the Git Parameter Plugin in your Jenkins instance to see if it is version 462.vdcf3df2ed2ca_ or earlier.

You can check the installed plugin version using Jenkins Script Console or CLI commands.

• Using Jenkins Script Console (Manage Jenkins > Script Console), run: `println(Jenkins.instance.getPluginManager().getPlugin('git-parameter').getVersion())`
• Using Jenkins CLI, run: `java -jar jenkins-cli.jar -s http://your-jenkins-url/ list-plugins | grep git-parameter`

If the plugin version is 462.vdcf3df2ed2ca_ or earlier, your system is vulnerable.

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade the Jenkins Git Parameter Plugin to a version later than 462.vdcf3df2ed2ca_ where the missing permission check has been fixed.

Additionally, review and restrict the Item/Read permissions in Jenkins to only trusted users, minimizing the risk of unauthorized information disclosure.

Regularly monitor Jenkins security advisories and update plugins promptly to address known vulnerabilities.

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