CVE-2021-21620 : What You Need to Know

A CSRF vulnerability in Jenkins Claim Plugin 2.18.1 and earlier versions allows attackers to change claims.

Understanding CVE-2021-21620

This CVE affects Jenkins Claim Plugin with specific vulnerable versions.

What is CVE-2021-21620?

CVE-2021-21620 is a Cross-Site Request Forgery (CSRF) vulnerability in Jenkins Claim Plugin, allowing unauthorized claim changes.

The Impact of CVE-2021-21620

The vulnerability could be exploited by attackers to modify claims, potentially leading to unauthorized actions or data manipulation.

Technical Details of CVE-2021-21620

Understanding the vulnerability details and affected systems.

Vulnerability Description

The vulnerability lies in Jenkins Claim Plugin versions up to 2.18.1, enabling attackers to perform CSRF attacks and alter claims.

Affected Systems and Versions

Jenkins Claim Plugin up to version 2.18.1 is confirmed to be affected by this security flaw.

Exploitation Mechanism

Attackers can exploit the CSRF vulnerability to manipulate claims in Jenkins Claim Plugin instances.

Mitigation and Prevention

Steps to mitigate the vulnerability and enhance security measures.

Immediate Steps to Take

Users should update Jenkins Claim Plugin to a fixed version and review and modify any unauthorized claim changes.

Long-Term Security Practices

Implement strict CSRF protection mechanisms, conduct regular security audits, and educate users on secure claim management.

Patching and Updates

Stay informed about security patches released by Jenkins project, and promptly apply updates to protect systems.