CVE-2018-1000604 : Exploit Details and Defense Strategies

Jenkins Badge Plugin versions 1.4 and earlier contain a persistent cross-site scripting vulnerability that can be exploited by attackers to inject malicious JavaScript code.

Understanding CVE-2018-1000604

This CVE involves a security issue in Jenkins Badge Plugin versions 1.4 and below that allows attackers to execute arbitrary JavaScript code in the context of another user's browser.

What is CVE-2018-1000604?

A persistent cross-site scripting vulnerability in Jenkins Badge Plugin versions 1.4 and earlier enables attackers to manipulate build badge content to inject and execute malicious JavaScript code in the browser of unsuspecting users.

The Impact of CVE-2018-1000604

This vulnerability poses a significant risk as attackers can exploit it to perform various malicious actions, such as stealing sensitive information or performing unauthorized operations on behalf of the user.

Technical Details of CVE-2018-1000604

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability exists in BadgeSummaryAction.java and HtmlBadgeAction.java, allowing attackers with control over badge content to execute JavaScript in other users' browsers.

Affected Systems and Versions

Product: Jenkins Badge Plugin
Vendor: N/A
Versions affected: 1.4 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the content of build badges to inject and execute JavaScript code in the browsers of other users when specific actions are performed within the user interface.

Mitigation and Prevention

To address CVE-2018-1000604, consider the following mitigation strategies:

Immediate Steps to Take

Update Jenkins Badge Plugin to the latest version to patch the vulnerability.
Monitor and restrict user input to prevent malicious code injection.

Long-Term Security Practices

Implement secure coding practices to sanitize user inputs and prevent cross-site scripting attacks.
Regularly audit and review code for potential security vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches to address known vulnerabilities in software components.