CVE-2021-21625 : What You Need to Know

A vulnerability has been identified in Jenkins CloudBees AWS Credentials Plugin version 1.28 and earlier. Attackers with Overall/Read permission can exploit this flaw to enumerate credentials IDs of AWS credentials stored in Jenkins.

Understanding CVE-2021-21625

This CVE record pertains to a security issue in the Jenkins CloudBees AWS Credentials Plugin that can be leveraged by attackers with specific permissions to access sensitive AWS credentials stored in Jenkins.

What is CVE-2021-21625?

The vulnerability in Jenkins CloudBees AWS Credentials Plugin versions <=1.28 allows unauthorized users with Overall/Read permission to retrieve AWS credentials IDs stored in Jenkins via HTTP endpoints.

The Impact of CVE-2021-21625

This security flaw poses a significant risk to organizations using Jenkins, as it enables unauthorized access to AWS credentials, potentially leading to data breaches and unauthorized AWS account usage.

Technical Details of CVE-2021-21625

This section delves into the specifics of the vulnerability, including its description, affected systems, and exploitation mechanisms.

Vulnerability Description

Jenkins CloudBees AWS Credentials Plugin 1.28 and earlier lacks permission checks in certain HTTP endpoints, allowing attackers with Overall/Read permission to list AWS credentials IDs in Jenkins.

Affected Systems and Versions

The vulnerability affects Jenkins CloudBees AWS Credentials Plugin versions up to and including 1.28, putting instances with these versions at risk of unauthorized AWS credential enumeration.

Exploitation Mechanism

By exploiting the absence of permission validation in HTTP helper methods, malicious actors with Overall/Read access can enumerate AWS credential IDs stored in Jenkins.

Mitigation and Prevention

Learn about the steps organizations can take to mitigate the risks associated with CVE-2021-21625 and prevent potential security incidents.

Immediate Steps to Take

Organizations should update the Jenkins CloudBees AWS Credentials Plugin to a secure version and review access controls to restrict permissions for sensitive actions.

Long-Term Security Practices

Implement least privilege access, regularly audit permissions, and educate users on secure credential management practices to enhance overall security posture.

Patching and Updates

Stay informed about security advisories from Jenkins and promptly apply patches or updates to address known vulnerabilities and strengthen overall security defenses.