CVE-2020-2294 : Exploit Details and Defense Strategies

Jenkins Maven Cascade Release Plugin 1.3.2 and earlier versions have a security vulnerability that allows attackers with Overall/Read permission to execute unauthorized actions.

Understanding CVE-2020-2294

This CVE involves a missing authorization flaw in the Jenkins Maven Cascade Release Plugin.

What is CVE-2020-2294?

Jenkins Maven Cascade Release Plugin versions 1.3.2 and below lack proper permission checks in various HTTP endpoints, enabling users with Overall/Read permission to initiate cascade builds, layout builds, and modify the plugin configuration.

The Impact of CVE-2020-2294

The vulnerability could be exploited by malicious actors with specific permissions to perform unauthorized actions within the Jenkins environment.

Technical Details of CVE-2020-2294

The following are technical details regarding this CVE.

Vulnerability Description

The Jenkins Maven Cascade Release Plugin 1.3.2 and earlier versions do not enforce permission verification in multiple HTTP endpoints, leading to potential security breaches.

Affected Systems and Versions

Product: Jenkins Maven Cascade Release Plugin
Vendor: Jenkins project
Vulnerable Versions:
Version <= 1.3.2 (affected)
Version > 1.3.2 (status unknown)

Exploitation Mechanism

Attackers with Overall/Read permission can exploit the lack of permission checks to manipulate the plugin's settings and trigger unauthorized builds.

Mitigation and Prevention

To address CVE-2020-2294, consider the following mitigation strategies.

Immediate Steps to Take

Upgrade the Jenkins Maven Cascade Release Plugin to a secure version.
Restrict Overall/Read permissions to authorized users only.

Long-Term Security Practices

Regularly review and adjust permission settings in Jenkins.
Monitor plugin updates and security advisories from Jenkins.

Patching and Updates

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