CVE-2020-2169 : Exploit Details and Defense Strategies

Jenkins Queue cleanup Plugin 1.3 and earlier versions are affected by a reflected XSS vulnerability due to improper query parameter escaping in a form validation endpoint.

Understanding CVE-2020-2169

This CVE involves a security issue in the Jenkins Queue cleanup Plugin that allows for a reflected XSS attack.

What is CVE-2020-2169?

A reflected XSS vulnerability in Jenkins Queue cleanup Plugin 1.3 and earlier versions enables attackers to inject malicious scripts into web pages viewed by other users.

The Impact of CVE-2020-2169

The vulnerability could lead to unauthorized access, data theft, and potential compromise of sensitive information within the Jenkins environment.

Technical Details of CVE-2020-2169

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The issue arises from the improper handling of query parameters in error messages, allowing for XSS attacks.

Affected Systems and Versions

Product: Jenkins Queue cleanup Plugin
Vendor: Jenkins project
Versions Affected: <= 1.3 (unspecified version type)

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious URLs containing script payloads that, when clicked by users with appropriate permissions, execute unauthorized actions.

Mitigation and Prevention

To address CVE-2020-2169 and enhance security measures, consider the following steps:

Immediate Steps to Take

Upgrade Jenkins Queue cleanup Plugin to a patched version that addresses the XSS vulnerability.
Implement input validation mechanisms to sanitize user inputs and prevent script injections.

Long-Term Security Practices

Regularly monitor and update Jenkins and its plugins to ensure the latest security patches are applied.
Educate users on safe browsing practices to minimize the risk of falling victim to XSS attacks.

Patching and Updates

Stay informed about security advisories from Jenkins project and promptly apply recommended patches to mitigate known vulnerabilities.