CVE-2025-34435
📋 TL;DR
AVideo versions before 20.1 contain an insecure direct object reference (IDOR) vulnerability that allows any authenticated user to delete media files belonging to other users. The vulnerability occurs because the affected endpoint validates authentication but fails to verify ownership or edit permissions for targeted videos. All AVideo installations running vulnerable versions are affected.
💻 Affected Systems
- AVideo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Malicious authenticated users could delete all media files in the system, causing permanent data loss and service disruption.
Likely Case
Authenticated users deleting specific media files belonging to other users, potentially targeting sensitive or important content.
If Mitigated
Unauthorized deletions prevented through proper authorization checks, with only legitimate owners able to delete their media.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated. Public details available in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.1 and later
Vendor Advisory: https://github.com/WWBN/AVideo/commit/275a54268b
Restart Required: No
Instructions:
1. Backup your AVideo installation and database. 2. Update to AVideo version 20.1 or later. 3. Verify the fix by checking that the vulnerable endpoint now validates ownership permissions.
🔧 Temporary Workarounds
Temporary endpoint restriction
allTemporarily disable or restrict access to the vulnerable media deletion endpoint
# Modify .htaccess or web server config to restrict access to vulnerable endpoint
# Example for Apache: RewriteRule ^path/to/vulnerable/endpoint - [F]
🧯 If You Can't Patch
- Implement strict access controls and monitoring for media deletion operations
- Regularly backup media files and implement file integrity monitoring
🔍 How to Verify
Check if Vulnerable:
Check if AVideo version is below 20.1 and test authenticated deletion of another user's media fileCheck Version:
Check AVideo configuration or admin panel for version informationVerify Fix Applied:
After updating to 20.1+, test that authenticated users cannot delete media files belonging to other users📡 Detection & Monitoring
Log Indicators:
- Multiple DELETE requests to media endpoints from single user accounts
- Failed media deletion attempts with permission errors after patch
Network Indicators:
- HTTP DELETE requests to media endpoints with different user IDs
SIEM Query:
source="avideo_logs" AND (http_method="DELETE" AND uri="/path/to/media" AND user_id!=owner_id)