CVE-2020-2307 : Vulnerability Insights and Analysis

Jenkins Kubernetes Plugin 1.27.3 and earlier versions allow low-privilege users to access potentially sensitive Jenkins controller environment variables.

Understanding CVE-2020-2307

This CVE affects the Jenkins Kubernetes Plugin, specifically versions 1.27.3 and below.

What is CVE-2020-2307?

This vulnerability in the Jenkins Kubernetes Plugin enables users with low privileges to reach potentially sensitive Jenkins controller environment variables.

The Impact of CVE-2020-2307

The vulnerability could lead to unauthorized access to critical information, posing a risk to the confidentiality and integrity of Jenkins environments.

Technical Details of CVE-2020-2307

The following technical details provide insight into the CVE.

Vulnerability Description

The issue lies in Jenkins Kubernetes Plugin versions 1.27.3 and earlier, allowing unauthorized users to access Jenkins controller environment variables.

Affected Systems and Versions

Product: Jenkins Kubernetes Plugin
Vendor: Jenkins project
Affected Versions: <= 1.27.3 (custom version), 1.26.5, 1.25.4.1, 1.21.6

Exploitation Mechanism

The vulnerability can be exploited by low-privilege users to gain access to sensitive Jenkins controller environment variables.

Mitigation and Prevention

Protecting systems from CVE-2020-2307 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Jenkins Kubernetes Plugin to a patched version above 1.27.3.
Restrict access to sensitive Jenkins controller environment variables.

Long-Term Security Practices

Regularly monitor and audit access to Jenkins environments.
Implement the principle of least privilege to restrict user access.

Patching and Updates

Apply security patches promptly to Jenkins Kubernetes Plugin to address the vulnerability and enhance system security.