CVE-2024-6226
📋 TL;DR
The WpStickyBar WordPress plugin through version 2.1.0 contains a reflected cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts via an unsanitized parameter, which executes when the page loads, potentially compromising high-privilege users like administrators. This affects all WordPress sites using the vulnerable plugin version.
💻 Affected Systems
- WpStickyBar WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could steal administrator session cookies, perform actions as the administrator (like installing backdoors, modifying content, or creating new admin accounts), and potentially gain full control of the WordPress site.
Likely Case
An attacker tricks an administrator into clicking a malicious link, leading to session hijacking, credential theft, or unauthorized administrative actions within the WordPress dashboard.
If Mitigated
With proper web application firewalls (WAF) and security headers like Content Security Policy (CSP), the attack might be blocked or mitigated, reducing the risk of successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (e.g., clicking a malicious link), but the technical complexity is low, making it accessible to attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.1 or later
Vendor Advisory: https://wpscan.com/vulnerability/e42ce8dc-51d4-471d-b3bb-ad2a6b735d02/
Restart Required: No
Instructions:
1. Log into WordPress admin dashboard. 2. Navigate to Plugins > Installed Plugins. 3. Find WpStickyBar and update to version 2.1.1 or later. 4. If update is not available, deactivate and delete the plugin.
🔧 Temporary Workarounds
Implement Web Application Firewall (WAF)
allDeploy a WAF to block XSS payloads and malicious requests targeting the vulnerable parameter.
Apply Content Security Policy (CSP)
allConfigure CSP headers to restrict script execution sources, mitigating XSS impact.
🧯 If You Can't Patch
- Deactivate and remove the WpStickyBar plugin immediately to eliminate the vulnerability.
- Restrict access to the WordPress admin area to trusted IP addresses only using .htaccess or firewall rules.
🔍 How to Verify
Check if Vulnerable:
Check the plugin version in WordPress admin under Plugins > Installed Plugins; if WpStickyBar is version 2.1.0 or earlier, it is vulnerable.Check Version:
wp plugin list --name=WpStickyBar --field=version (if WP-CLI is installed)Verify Fix Applied:
After updating, confirm the plugin version is 2.1.1 or later in the Plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual GET or POST requests to WordPress pages with suspicious parameters containing script tags or JavaScript code.
- Failed login attempts or administrative actions from unexpected IP addresses following XSS exploitation.
Network Indicators:
- HTTP requests with encoded XSS payloads in query parameters, often targeting admin users.
SIEM Query:
source="wordpress.log" AND (uri="*wpstickybar*" OR uri="*admin*" OR uri="*wp-admin*") AND (param="*<script>*" OR param="*javascript:*" OR param="*onerror=*" OR param="*onload=*")