Cloud Defense Logo

Products

Solutions

Company

Book A Live Demo

CVE-2021-21641 Explained : Impact and Mitigation

Learn about CVE-2021-21641, a CSRF vulnerability in Jenkins promoted builds Plugin version 3.9 and earlier that allows attackers to promote builds. Find out the impact, technical details, and mitigation steps.

A CSRF vulnerability in Jenkins promoted builds Plugin version 3.9 and earlier allows attackers to promote builds.

Understanding CVE-2021-21641

This CVE involves a security issue in the Jenkins promoted builds Plugin that could be exploited by malicious actors.

What is CVE-2021-21641?

The CVE-2021-21641 is a cross-site request forgery (CSRF) vulnerability found in Jenkins promoted builds Plugin, enabling attackers to promote builds.

The Impact of CVE-2021-21641

Malicious users can exploit this vulnerability to perform unauthorized operations on Jenkins instances, potentially leading to unauthorized build promotions.

Technical Details of CVE-2021-21641

The technical aspects of CVE-2021-21641 include vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

A CSRF vulnerability in Jenkins promoted builds Plugin version 3.9 and earlier enables attackers to promote builds by tricking authenticated users into making unintended requests.

Affected Systems and Versions

Jenkins promoted builds Plugin versions less than or equal to 3.9 are affected, while version 3.5.1 is not vulnerable to this CSRF exploit.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by crafting a malicious link or script that, when accessed by an authenticated user, triggers the unauthorized promotion of builds.

Mitigation and Prevention

Protecting your systems from CVE-2021-21641 requires immediate actions and long-term security practices.

Immediate Steps to Take

        Update Jenkins promoted builds Plugin to version 3.5.1 or later to mitigate the CSRF vulnerability.
        Monitor and review build promotions for any unauthorized activities.

Long-Term Security Practices

        Regularly update Jenkins and its plugins to the latest secure versions.
        Implement CSRF protection mechanisms to prevent such attacks in the future.

Patching and Updates

Stay informed about security advisories and patches from Jenkins to promptly address any new vulnerabilities and enhance your system security.

Popular CVEs

CVE Id

Published Date

Is your System Free of Underlying Vulnerabilities?
Find Out Now