CVE-2023-49599
📋 TL;DR
This vulnerability allows attackers to forge password recovery codes for admin users in WWBN AVideo by exploiting weak salt generation. Attackers can brute-force the salt offline after gathering system information via HTTP requests, leading to privilege escalation. All systems running the vulnerable version of WWBN AVideo are affected.
💻 Affected Systems
- WWBN AVideo
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via admin account takeover, allowing data theft, configuration changes, and further attacks.
Likely Case
Admin account compromise leading to unauthorized access, data exposure, and potential lateral movement.
If Mitigated
Limited impact with proper network segmentation and monitoring, though authentication bypass remains possible.
🎯 Exploit Status
Exploitation requires HTTP requests to gather system information followed by offline brute-forcing.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check WWBN AVideo repository for updates after commit 15fed957fb
Vendor Advisory: https://talosintelligence.com/vulnerability_reports/TALOS-2023-1900
Restart Required: Yes
Instructions:
1. Update WWBN AVideo to the latest version. 2. Verify the salt generation uses cryptographically secure random functions. 3. Restart the application.
🔧 Temporary Workarounds
Disable password recovery
allTemporarily disable password recovery functionality to prevent exploitation.
# Modify application configuration to disable password recovery features
Network restrictions
allRestrict access to the AVideo application to trusted networks only.
# Use firewall rules to limit access (e.g., iptables, Windows Firewall)
🧯 If You Can't Patch
- Implement strong network segmentation to isolate the AVideo system from critical assets.
- Enable detailed logging and monitoring for suspicious password recovery attempts.
🔍 How to Verify
Check if Vulnerable:
Check if running WWBN AVideo dev master commit 15fed957fb or earlier by examining version files or commit history.Check Version:
# Check AVideo version in configuration files or via admin panelVerify Fix Applied:
Verify the updated version uses secure random functions for salt generation (e.g., check code for cryptographically secure RNG).📡 Detection & Monitoring
Log Indicators:
- Multiple failed password recovery attempts
- Unusual admin password reset requests
- HTTP requests to salt-related endpoints
Network Indicators:
- Unusual HTTP traffic patterns to password recovery endpoints
- Brute-force attempts from single IPs
SIEM Query:
source="avideo" AND (event="password_recovery" OR event="salt_generation") AND count > threshold