CVE-2019-1003083 : Security Advisory and Response

The GearmanPluginConfig#doTestConnection form validation method in Jenkins Gearman Plugin allows users with Overall/Read permission to establish a connection to a server specified by an attacker.

Understanding CVE-2019-1003083

This CVE involves a missing permission check in the GearmanPluginConfig#doTestConnection method in Jenkins Gearman Plugin, enabling unauthorized users to connect to attacker-specified servers.

What is CVE-2019-1003083?

The vulnerability in Jenkins Gearman Plugin allows users with Overall/Read permission to connect to specified servers without proper authorization.

The Impact of CVE-2019-1003083

Attackers can exploit this vulnerability to establish connections to servers specified by them, potentially leading to unauthorized access and data compromise.

Technical Details of CVE-2019-1003083

The following technical details outline the specifics of this CVE:

Vulnerability Description

The GearmanPluginConfig#doTestConnection method lacks a permission check, enabling users with Overall/Read permission to connect to attacker-specified servers.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers with Overall/Read permission can exploit the vulnerability to establish connections to servers specified by them.

Mitigation and Prevention

To address CVE-2019-1003083, consider the following mitigation strategies:

Immediate Steps to Take

Update Jenkins Gearman Plugin to the latest version to patch the vulnerability.
Restrict permissions for users to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor and audit permissions within Jenkins to ensure proper access control.
Educate users on secure configuration practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories from Jenkins and promptly apply patches to address known vulnerabilities.