CVE-2018-1000416 Explained : Impact and Mitigation

Jenkins Job Config History Plugin version 2.18 and earlier have a reflected cross-site scripting vulnerability that allows attackers to display arbitrary HTML content to users with Job/Configure access.

Understanding CVE-2018-1000416

What is CVE-2018-1000416?

A reflected cross-site scripting vulnerability in Jenkins Job Config History Plugin 2.18 and earlier enables attackers to inject arbitrary HTML content in Jenkins for users with specific access.

The Impact of CVE-2018-1000416

This vulnerability can lead to unauthorized display of content and potential manipulation of Jenkins configurations by malicious actors.

Technical Details of CVE-2018-1000416

Vulnerability Description

The vulnerability exists in all Jelly files within the plugin, allowing attackers to exploit it by injecting malicious HTML content.

Affected Systems and Versions

Jenkins Job Config History Plugin version 2.18 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability to inject and display unauthorized HTML content in Jenkins to users with Job/Configure access.

Mitigation and Prevention

Immediate Steps to Take

Update Jenkins Job Config History Plugin to version 2.19 or later to mitigate the vulnerability.
Restrict access to Jenkins to only trusted users with necessary permissions.

Long-Term Security Practices

Regularly monitor Jenkins for any unauthorized changes or suspicious activities.
Educate users on safe browsing practices and the risks of clicking on unknown links.

Patching and Updates

Apply security patches and updates promptly to ensure the latest fixes and enhancements are in place.