CVE-2018-1000603 : Security Advisory and Response

A vulnerability has been found in versions 2.35 and earlier of the Jenkins Openstack Cloud Plugin that exposes sensitive information and allows unauthorized access to credentials stored in Jenkins.

Understanding CVE-2018-1000603

This CVE involves a security vulnerability in the Jenkins Openstack Cloud Plugin that can be exploited by attackers with specific access to Jenkins.

What is CVE-2018-1000603?

The vulnerability in the Jenkins Openstack Cloud Plugin version 2.35 and earlier allows attackers with Overall/Read access to Jenkins to establish a connection to a specific URL using obtained credentials IDs, leading to unauthorized access to stored credentials.

The Impact of CVE-2018-1000603

Attackers exploiting this vulnerability can gain unauthorized access to sensitive information stored in Jenkins and manipulate Jenkins to send HTTP requests to URLs specified by the attacker.

Technical Details of CVE-2018-1000603

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability exists in multiple files within the Jenkins Openstack Cloud Plugin, including BootSource.java, InstancesToRun.java, and others, allowing attackers to connect to specific URLs using obtained credentials IDs.

Affected Systems and Versions

Jenkins Openstack Cloud Plugin versions 2.35 and earlier

Exploitation Mechanism

Attackers with Overall/Read access to Jenkins exploit the vulnerability to connect to a specific URL using obtained credentials IDs, gaining unauthorized access to stored credentials and manipulating Jenkins to send HTTP requests.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2018-1000603, follow these steps:

Immediate Steps to Take

Upgrade Jenkins Openstack Cloud Plugin to a non-vulnerable version.
Restrict access to Jenkins to authorized personnel only.
Monitor Jenkins for any unauthorized access or suspicious activities.

Long-Term Security Practices

Regularly update Jenkins and its plugins to the latest secure versions.
Implement strong authentication mechanisms and access controls within Jenkins.

Patching and Updates

Apply patches and security updates provided by Jenkins to fix the vulnerability and enhance overall security.