CVE-2025-34438
📋 TL;DR
AVideo versions before 20.1 contain an insecure direct object reference vulnerability that allows authenticated users with upload permissions to modify rotation metadata of any video in the system, regardless of ownership. This affects all AVideo installations running vulnerable versions where users have upload capabilities. The vulnerability stems from improper authorization checks on video rotation endpoints.
💻 Affected Systems
- AVideo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Malicious users could systematically modify metadata of all videos in the system, potentially corrupting video content, disrupting media workflows, or enabling further attacks through metadata manipulation.
Likely Case
Users with upload permissions could tamper with video rotation settings for videos they don't own, causing display issues and minor service disruption.
If Mitigated
With proper access controls and monitoring, impact is limited to unauthorized metadata changes that can be detected and rolled back.
🎯 Exploit Status
Exploitation requires authenticated user with upload permissions; detailed technical analysis available in public references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.1 and later
Vendor Advisory: https://github.com/WWBN/AVideo/commit/4a53ab2056
Restart Required: No
Instructions:
1. Update AVideo to version 20.1 or later. 2. Apply commits 4a53ab2056 and c2feaf25cb if manually patching. 3. Verify the fix by testing video rotation functionality.
🔧 Temporary Workarounds
Temporary Access Restriction
allTemporarily restrict upload permissions to trusted users only until patching can be completed.
🧯 If You Can't Patch
- Implement strict access controls to limit upload permissions to essential personnel only.
- Enable detailed logging of video metadata changes and monitor for unauthorized rotation modifications.
🔍 How to Verify
Check if Vulnerable:
Check AVideo version; if below 20.1, test if users with upload permissions can modify rotation of videos they don't own via the rotation endpoint.Check Version:
Check AVideo configuration or admin panel for version information.Verify Fix Applied:
After updating to 20.1+, verify that users can only modify rotation for videos they own or manage.📡 Detection & Monitoring
Log Indicators:
- Unusual video rotation requests from users
- Multiple rotation modifications in short timeframes
- Rotation changes on videos not owned by the requesting user
Network Indicators:
- POST requests to video rotation endpoints with different video IDs
- Pattern of rotation metadata modifications
SIEM Query:
source="avideo_logs" AND (event="video_rotation" OR endpoint="/rotate") | stats count by user_id, video_id