CVE-2016-10974
📋 TL;DR
This vulnerability in the fluid-responsive-slideshow WordPress plugin allows attackers to perform Cross-Site Request Forgery (CSRF) attacks that lead to stored Cross-Site Scripting (XSS). Attackers can trick authenticated administrators into executing malicious actions, which then inject persistent JavaScript payloads into the website. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress fluid-responsive-slideshow plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete site takeover through administrative account compromise, data theft, malware distribution to visitors, and defacement.
Likely Case
Site defacement, cookie theft from administrators, redirection to malicious sites, and potential credential harvesting.
If Mitigated
Limited impact with proper CSRF protections and content security policies in place.
🎯 Exploit Status
Exploitation requires tricking authenticated administrators but uses simple CSRF+XSS techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.7
Vendor Advisory: https://wordpress.org/plugins/fluid-responsive-slideshow/#developers
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Fluid Responsive Slideshow'. 4. Click 'Update Now' if available. 5. If not, download version 2.2.7+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patching is possible.
wp plugin deactivate fluid-responsive-slideshow
Implement CSRF Protection
allAdd WordPress nonce verification to plugin forms if custom patching is possible.
Add wp_nonce_field() and wp_verify_nonce() to frs_save functionality
🧯 If You Can't Patch
- Restrict administrator access to trusted networks only
- Implement Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin under Plugins > Installed Plugins. Look for 'Fluid Responsive Slideshow' with version below 2.2.7.Check Version:
wp plugin get fluid-responsive-slideshow --field=versionVerify Fix Applied:
Confirm plugin version is 2.2.7 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with action=frs_save
- Administrator accounts accessing suspicious external URLs
Network Indicators:
- Unexpected JavaScript injection in plugin settings or slideshow content
SIEM Query:
source="wordpress.log" AND "frs_save" AND status=200