CVE-2018-1000426 Explained : Impact and Mitigation

Jenkins Git Changelog Plugin versions 2.6 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to manipulate Git history and display unauthorized HTML content on Jenkins pages.

Understanding CVE-2018-1000426

This CVE involves a security issue in Jenkins Git Changelog Plugin versions 2.6 and below, enabling cross-site scripting attacks.

What is CVE-2018-1000426?

A vulnerability in Jenkins Git Changelog Plugin versions 2.6 and earlier allows attackers to inject unauthorized HTML content on specific Jenkins pages by manipulating Git history.

The Impact of CVE-2018-1000426

This vulnerability could lead to unauthorized HTML content being displayed on Jenkins pages, potentially compromising the integrity and security of the affected systems.

Technical Details of CVE-2018-1000426

The technical aspects of the CVE provide insight into the vulnerability and its implications.

Vulnerability Description

The vulnerability in Jenkins Git Changelog Plugin versions 2.6 and earlier enables cross-site scripting attacks by allowing attackers to control the parsed Git history, leading to the display of unauthorized HTML content on certain Jenkins pages.

Affected Systems and Versions

Jenkins Git Changelog Plugin versions 2.6 and earlier

Exploitation Mechanism

Attackers manipulate the parsed Git history to inject unauthorized HTML content

Mitigation and Prevention

Protecting systems from CVE-2018-1000426 involves immediate actions and long-term security practices.

Immediate Steps to Take

Update Jenkins Git Changelog Plugin to a non-vulnerable version
Monitor Jenkins pages for unauthorized HTML content

Long-Term Security Practices

Regularly update Jenkins and its plugins to the latest secure versions
Implement strict input validation to prevent XSS attacks

Patching and Updates

Apply patches provided by Jenkins to fix the vulnerability