CVE-2018-1000421 Explained : Impact and Mitigation

Jenkins Mesos Plugin version 0.17.1 and earlier contain a security flaw that allows unauthorized individuals to establish a test connection to a Mesos server, potentially compromising credentials stored in Jenkins.

Understanding CVE-2018-1000421

This CVE involves an improper authorization vulnerability in Jenkins Mesos Plugin.

What is CVE-2018-1000421?

This vulnerability in MesosCloud.java allows attackers with Overall/Read access to connect to a specified Mesos server using credentials obtained through another method.

The Impact of CVE-2018-1000421

Unauthorized individuals can capture sensitive credentials stored in Jenkins, posing a risk to the security of the system.

Technical Details of CVE-2018-1000421

Jenkins Mesos Plugin 0.17.1 and earlier are affected by this vulnerability.

Vulnerability Description

The flaw in MesosCloud.java enables attackers to establish connections to Mesos servers using unauthorized credentials.

Affected Systems and Versions

Product: Jenkins Mesos Plugin
Versions affected: 0.17.1 and earlier

Exploitation Mechanism

Attackers with Overall/Read access can provide their own Mesos server address and credentials IDs to capture stored credentials.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update Jenkins Mesos Plugin to the latest version.
Restrict Overall/Read privileges to trusted users only.

Long-Term Security Practices

Regularly review and update access control policies.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Apply security patches promptly to mitigate the risk of unauthorized access.