CVE-2019-1003050 : What You Need to Know

In versions prior to Jenkins 2.171 and Jenkins LTS 2.164.1, a vulnerability existed in the Jenkins UI's f:validateButton form control, allowing users to exploit a cross-site scripting (XSS) vulnerability.

Understanding CVE-2019-1003050

This CVE refers to a security issue in Jenkins versions before 2.171 and LTS 2.164.1.

What is CVE-2019-1003050?

The vulnerability in the f:validateButton form control of Jenkins UI allowed users to execute XSS attacks by manipulating job URLs.

The Impact of CVE-2019-1003050

The vulnerability could be exploited by users with control over job names, potentially leading to unauthorized access and data manipulation.

Technical Details of CVE-2019-1003050

This section provides more technical insights into the CVE.

Vulnerability Description

The f:validateButton form control in Jenkins versions before 2.171 and LTS 2.164.1 did not properly escape job URLs, enabling XSS attacks.

Affected Systems and Versions

Product: Jenkins
Vendor: Jenkins project
Versions Affected: 2.171 and earlier, LTS 2.164.1 and earlier

Exploitation Mechanism

The vulnerability allowed users to exploit XSS by manipulating job URLs due to improper escaping in the Jenkins UI.

Mitigation and Prevention

Protect your systems from CVE-2019-1003050 with the following measures.

Immediate Steps to Take

Update Jenkins to version 2.171 or later to mitigate the vulnerability.
Regularly monitor and review job names and URLs for any suspicious activity.

Long-Term Security Practices

Educate users on XSS attacks and best practices for secure coding.
Implement security testing and code reviews to identify and address vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from Jenkins project.
Apply patches and updates promptly to address known vulnerabilities.