CVE-2018-1000407 : Vulnerability Insights and Analysis

Jenkins versions 2.145 and earlier, LTS versions 2.138.1 and earlier, contain a cross-site scripting (XSS) vulnerability that allows attackers to manipulate HTML content.

Understanding CVE-2018-1000407

This CVE involves a security flaw in Jenkins versions that could be exploited by attackers to execute cross-site scripting attacks.

What is CVE-2018-1000407?

A vulnerability in the "Api.java" file in Jenkins versions 2.145 and earlier, LTS versions 2.138.1 and earlier, allows attackers to input URLs that can be used to render controlled HTML content.

The Impact of CVE-2018-1000407

This vulnerability enables attackers to inject malicious scripts into Jenkins, potentially leading to unauthorized access, data theft, and other security breaches.

Technical Details of CVE-2018-1000407

Jenkins versions 2.145 and earlier, LTS versions 2.138.1 and earlier, are affected by this XSS vulnerability.

Vulnerability Description

The vulnerability resides in the "Api.java" file within the "core/src/main/java/hudson/model" directory, enabling attackers to insert URLs that result in rendering attacker-controlled HTML.

Affected Systems and Versions

Jenkins versions 2.145 and earlier
LTS versions 2.138.1 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by inputting URLs into Jenkins, which then renders HTML content that can be manipulated by the attacker.

Mitigation and Prevention

To address CVE-2018-1000407, follow these steps:

Immediate Steps to Take

Upgrade Jenkins to a non-vulnerable version
Implement input validation to prevent malicious URLs

Long-Term Security Practices

Regularly update Jenkins and its plugins
Educate users on safe URL handling practices

Patching and Updates

Apply security patches provided by Jenkins