CVE-2019-10339 : Exploit Details and Defense Strategies

Jenkins JX Resources Plugin version 1.0.36 and earlier contain a vulnerability that allows users with Overall/Read access to connect Jenkins to a Kubernetes server specified by an attacker, potentially exposing sensitive credentials.

Understanding CVE-2019-10339

This CVE pertains to a missing permission check in the Jenkins JX Resources Plugin.

What is CVE-2019-10339?

The vulnerability in Jenkins JX Resources Plugin version 1.0.36 and earlier allows users with specific access to connect Jenkins to a Kubernetes server designated by an attacker, leading to potential credential exposure.

The Impact of CVE-2019-10339

The vulnerability could result in unauthorized users gaining access to sensitive credentials, posing a risk of data exposure and potential misuse.

Technical Details of CVE-2019-10339

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The flaw exists in the GlobalPluginConfiguration#doValidateClient function of the Jenkins JX Resources Plugin, enabling unauthorized connections to Kubernetes servers.

Affected Systems and Versions

Product: Jenkins JX Resources Plugin
Vendor: Jenkins project
Vulnerable Versions: 1.0.36 and earlier

Exploitation Mechanism

The vulnerability allows users with Overall/Read access to connect Jenkins to a Kubernetes server specified by an attacker, potentially leading to credential exposure.

Mitigation and Prevention

To address CVE-2019-10339, consider the following steps:

Immediate Steps to Take

Upgrade Jenkins JX Resources Plugin to a non-vulnerable version.
Restrict access permissions to prevent unauthorized connections.

Long-Term Security Practices

Regularly monitor and update plugins to ensure security patches are applied promptly.
Implement least privilege access controls to limit potential vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Jenkins project to address known vulnerabilities.