CVE-2025-41420
📋 TL;DR
A cross-site scripting vulnerability in WWBN AVideo's userLogin cancelUri parameter allows attackers to execute arbitrary JavaScript when users visit malicious webpages. This affects WWBN AVideo 14.4 and development versions, potentially compromising user sessions and data. The vulnerability requires user interaction but can lead to significant security impacts.
💻 Affected Systems
- WWBN AVideo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, credential theft, and installation of malware on user systems through malicious JavaScript execution.
Likely Case
Session hijacking, credential theft, and unauthorized actions performed on behalf of authenticated users.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy in place.
🎯 Exploit Status
Requires user interaction (visiting malicious page) but exploitation is straightforward once the vulnerability is understood
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://talosintelligence.com/vulnerability_reports/TALOS-2025-2209
Restart Required: Yes
Instructions:
1. Check vendor advisory for patched version
2. Update WWBN AVideo to patched version
3. Restart application/services
4. Verify fix implementation
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and output encoding for the cancelUri parameter
Implement server-side validation: filter cancelUri parameter for script tags and special characters
Apply proper output encoding when displaying cancelUri values
Content Security Policy
allImplement strict Content Security Policy headers to prevent script execution
Add CSP header: Content-Security-Policy: script-src 'self'
🧯 If You Can't Patch
- Implement WAF rules to block malicious cancelUri parameter values
- Disable or restrict the userLogin cancelUri functionality if not essential
🔍 How to Verify
Check if Vulnerable:
Test the cancelUri parameter with XSS payloads like <script>alert('test')</script>Check Version:
Check WWBN AVideo version in admin panel or configuration filesVerify Fix Applied:
Verify that XSS payloads in cancelUri parameter are properly sanitized and do not execute📡 Detection & Monitoring
Log Indicators:
- Unusual cancelUri parameter values containing script tags or JavaScript code
- Multiple failed login attempts with suspicious cancelUri parameters
Network Indicators:
- HTTP requests with cancelUri parameter containing script tags or encoded JavaScript
SIEM Query:
search cancelUri parameter for patterns like <script, javascript:, or encoded script content