CVE-2025-25214
📋 TL;DR
A race condition vulnerability in WWBN AVideo's aVideoEncoder.json.php unzip functionality allows attackers to execute arbitrary code through specially crafted HTTP requests. This affects AVideo 14.4 and development versions, potentially compromising the entire server. Organizations running vulnerable AVideo instances are at risk.
💻 Affected Systems
- WWBN AVideo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full server compromise leading to data theft, ransomware deployment, or complete system takeover
Likely Case
Web server compromise allowing data exfiltration, backdoor installation, and lateral movement
If Mitigated
Limited impact with proper network segmentation, WAF rules, and minimal privileges
🎯 Exploit Status
Race condition exploitation requires precise timing but unauthenticated access lowers barrier
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not yet released
Vendor Advisory: Not available
Restart Required: No
Instructions:
Monitor vendor for patch release. Apply immediately when available.
🔧 Temporary Workarounds
Disable vulnerable endpoint
allBlock access to aVideoEncoder.json.php via web server configuration
# Apache: RewriteRule ^aVideoEncoder\.json\.php$ - [F,L]
# Nginx: location ~* aVideoEncoder\.json\.php { deny all; }
Implement WAF rules
allBlock suspicious unzip-related requests at the web application firewall
🧯 If You Can't Patch
- Network segmentation: Isolate AVideo server from critical systems
- Implement strict file upload restrictions and monitoring
🔍 How to Verify
Check if Vulnerable:
Check AVideo version and if aVideoEncoder.json.php endpoint responds to requestsCheck Version:
Check AVideo configuration files or admin panel for version informationVerify Fix Applied:
Verify endpoint is inaccessible or patched version is installed📡 Detection & Monitoring
Log Indicators:
- Multiple rapid requests to aVideoEncoder.json.php
- Unusual file operations in upload directories
- Process execution from web server context
Network Indicators:
- HTTP POST requests with zip file uploads to vulnerable endpoint
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_server" AND (uri="*aVideoEncoder.json.php*" OR process="unzip")