CVE-2019-17207 : Vulnerability Insights and Analysis

A vulnerability in the broken-link-checker plugin version 1.11.8 for WordPress allows unauthorized individuals to inject client-side JavaScript into restricted WordPress pages.

Understanding CVE-2019-17207

The vulnerability known as reflected XSS affects the broken-link-checker plugin for WordPress.

What is CVE-2019-17207?

The vulnerability exists in includes/admin/table-printer.php in the plugin version 1.11.8 for WordPress.
It enables unauthorized users to inject client-side JavaScript into admin-only WordPress pages.
Injection is possible through the search action's s_filter parameter in the wp-admin/tools.php?page=view-broken-links URL.

The Impact of CVE-2019-17207

Allows attackers to execute malicious scripts on the affected WordPress site.
Can lead to unauthorized access, data theft, and other security breaches.

Technical Details of CVE-2019-17207

The technical aspects of the vulnerability in the broken-link-checker plugin.

Vulnerability Description

Type: Reflected Cross-Site Scripting (XSS)
Location: includes/admin/table-printer.php
Plugin Version: 1.11.8

Affected Systems and Versions

Plugin Version: 1.11.8
Systems: WordPress with the broken-link-checker plugin

Exploitation Mechanism

Exploited through the s_filter parameter in the wp-admin/tools.php?page=view-broken-links URL.

Mitigation and Prevention

Steps to mitigate the CVE-2019-17207 vulnerability in the broken-link-checker plugin.

Immediate Steps to Take

Disable or remove the broken-link-checker plugin if not essential.
Implement input validation to prevent malicious script injection.
Regularly monitor and update WordPress plugins for security patches.

Long-Term Security Practices

Educate users on safe browsing habits and recognizing phishing attempts.
Employ web application firewalls to filter and block malicious traffic.
Conduct regular security audits and penetration testing.

Patching and Updates

Update the broken-link-checker plugin to a patched version.
Stay informed about security advisories and apply relevant patches promptly.