CVE-2020-2118 : Security Advisory and Response

A missing permission check in Jenkins Pipeline GitHub Notify Step Plugin 1.0.4 and earlier allowed unauthorized users to access credentials stored in Jenkins.

Understanding CVE-2020-2118

This CVE involves a vulnerability in the Jenkins Pipeline GitHub Notify Step Plugin that could be exploited by users with Overall/Read access.

What is CVE-2020-2118?

The vulnerability in the Jenkins Pipeline GitHub Notify Step Plugin version 1.0.4 and earlier allowed unauthorized users to enumerate credentials IDs stored in Jenkins.

The Impact of CVE-2020-2118

Unauthorized users with Overall/Read access could access sensitive credentials stored in Jenkins, potentially leading to unauthorized actions and data exposure.

Technical Details of CVE-2020-2118

The technical details of this CVE are as follows:

Vulnerability Description

A missing permission check in the Jenkins Pipeline GitHub Notify Step Plugin 1.0.4 and earlier allowed users with Overall/Read access to enumerate credentials IDs stored in Jenkins.

Affected Systems and Versions

Product: Jenkins Pipeline GitHub Notify Step Plugin
Vendor: Jenkins project
Versions Affected: <= 1.0.4 (unspecified version type: custom)

Exploitation Mechanism

Unauthorized users with Overall/Read access could exploit this vulnerability to access and enumerate credentials IDs stored in Jenkins.

Mitigation and Prevention

To mitigate the risks associated with CVE-2020-2118, consider the following steps:

Immediate Steps to Take

Upgrade the Jenkins Pipeline GitHub Notify Step Plugin to a non-vulnerable version.
Restrict access to sensitive credentials within Jenkins.

Long-Term Security Practices

Regularly review and update Jenkins plugins to the latest secure versions.
Implement the principle of least privilege to restrict access to sensitive information.

Patching and Updates

Ensure timely patching and updates of Jenkins and its associated plugins to address known vulnerabilities and enhance overall security.