CVE-2024-3703
📋 TL;DR
The Carousel Slider WordPress plugin before version 2.2.10 contains a stored cross-site scripting (XSS) vulnerability in slide options. This allows authenticated users with Editor role or higher to inject malicious scripts that execute when other users view pages containing the affected shortcode. The vulnerability affects WordPress sites using vulnerable versions of this plugin.
💻 Affected Systems
- Carousel Slider WordPress Plugin
📦 What is this software?
Carousel Slider by Majeedraza
⚠️ Risk & Real-World Impact
Worst Case
An attacker with Editor privileges could inject malicious JavaScript that steals administrator credentials, redirects users to malicious sites, or performs actions on behalf of authenticated users, potentially leading to full site compromise.
Likely Case
Malicious editors could embed scripts that display unwanted content, deface pages, or steal session cookies from other users viewing affected pages.
If Mitigated
With proper role-based access controls limiting Editor privileges to trusted users only, the attack surface is significantly reduced to insider threats.
🎯 Exploit Status
Exploitation requires Editor-level access to WordPress. The vulnerability is in the plugin's output handling of slide options without proper sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.10
Vendor Advisory: https://wpscan.com/vulnerability/3242b820-1da0-41ba-9f35-7be5dbc6d4b0/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Carousel Slider plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 2.2.10+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Remove Editor Role from Untrusted Users
allTemporarily reduce attack surface by limiting Editor privileges to only essential, trusted personnel.
Disable Plugin
allDeactivate the Carousel Slider plugin until patched, though this will break carousel functionality.
🧯 If You Can't Patch
- Implement strict role-based access control to limit Editor privileges to minimum necessary users only.
- Deploy a web application firewall (WAF) with XSS protection rules to block malicious script injection attempts.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Carousel Slider version. If version is below 2.2.10, the site is vulnerable.Check Version:
wp plugin list --name=carousel-slider --field=version (if WP-CLI is installed)Verify Fix Applied:
After updating, verify the Carousel Slider plugin shows version 2.2.10 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php with slide option parameters containing script tags or JavaScript code
- Multiple failed login attempts followed by successful Editor-level login
Network Indicators:
- Outbound connections to suspicious domains from WordPress pages containing carousel shortcodes
- Unexpected JavaScript execution in browser developer tools on carousel pages
SIEM Query:
source="wordpress.log" AND ("admin-ajax.php" AND "action=save_slide" AND ("<script" OR "javascript:"))