CVE-2024-13777
📋 TL;DR
This vulnerability allows unauthenticated attackers to inject PHP objects via deserialization of untrusted input in the ZoomSounds WordPress plugin. It affects all WordPress sites using ZoomSounds plugin versions up to 6.91. Actual exploitation requires a separate plugin or theme with a POP chain to be present on the target system.
💻 Affected Systems
- ZoomSounds - WordPress Wave Audio Player with Playlist
📦 What is this software?
Zoomsounds by Digitalzoomstudio
⚠️ Risk & Real-World Impact
Worst Case
If combined with a POP chain from another plugin/theme, attackers could achieve remote code execution, delete arbitrary files, or retrieve sensitive data from the WordPress site.
Likely Case
Most installations will not have a compatible POP chain, resulting in no immediate impact, but the vulnerability still exposes the system to potential future exploitation if vulnerable plugins are added.
If Mitigated
With proper plugin management and security controls, the risk is limited to denial of service or minor disruption even if exploited.
🎯 Exploit Status
Exploitation requires finding or crafting a compatible POP chain from other installed components. No known POP chain exists in the vulnerable plugin itself.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 6.91
Vendor Advisory: https://codecanyon.net/item/zoomsounds-wordpress-wave-audio-player-with-playlist/6181433
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find ZoomSounds plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin immediately.
🔧 Temporary Workarounds
Disable ZoomSounds Plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate zoomsounds
Web Application Firewall Rule
allBlock requests containing 'margs' parameter targeting ZoomSounds endpoints
🧯 If You Can't Patch
- Remove ZoomSounds plugin completely from the WordPress installation
- Implement strict input validation and sanitization at the application level
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for ZoomSounds version 6.91 or earlierCheck Version:
wp plugin get zoomsounds --field=versionVerify Fix Applied:
Verify ZoomSounds plugin version is greater than 6.91 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing 'margs' parameter with serialized data
- PHP errors related to deserialization or unserialize() function
Network Indicators:
- POST requests to WordPress endpoints with serialized data in parameters
- Unusual traffic patterns to ZoomSounds plugin URLs
SIEM Query:
source="wordpress" AND (uri="*zoomsounds*" OR params="*margs*")