CVE-2019-1003093 : Security Advisory and Response

The Jenkins Nomad Plugin is affected by a vulnerability that allows attackers with specific permissions to establish connections with unauthorized servers.

Understanding CVE-2019-1003093

This CVE identifies a security issue in the Jenkins Nomad Plugin that could be exploited by attackers with Overall/Read permissions.

What is CVE-2019-1003093?

A lack of permission check in the Jenkins Nomad Plugin's NomadCloud.DescriptorImpl#doTestConnection form validation method enables attackers with specific permissions to connect to a server of their choice.

The Impact of CVE-2019-1003093

This vulnerability allows attackers to establish connections with unauthorized servers, potentially leading to unauthorized access and data compromise.

Technical Details of CVE-2019-1003093

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability arises from a missing permission check in the Jenkins Nomad Plugin, specifically in the NomadCloud.DescriptorImpl#doTestConnection form validation method.

Affected Systems and Versions

Product: Jenkins Nomad Plugin
Vendor: Jenkins project
Versions: All versions as of 2019-04-03

Exploitation Mechanism

Attackers with Overall/Read permissions can exploit this vulnerability to connect to a server of their choosing.

Mitigation and Prevention

To address CVE-2019-1003093, consider the following steps:

Immediate Steps to Take

Update the Jenkins Nomad Plugin to the latest version.
Restrict permissions for users to minimize the risk of unauthorized connections.

Long-Term Security Practices

Regularly review and update permissions and access controls within Jenkins.
Monitor network traffic for any suspicious activity that may indicate unauthorized connections.

Patching and Updates

Ensure that all software components, including plugins like the Jenkins Nomad Plugin, are regularly updated to the latest secure versions.