CVE-2022-25521
📋 TL;DR
CVE-2022-25521 is an access control vulnerability in NUUO network video recorder software that allows attackers to gain unauthorized remote access using default credentials. This affects organizations using NUUO v03.11.00 for video surveillance systems. Attackers can potentially access internal administrative panels and sensitive video feeds.
💻 Affected Systems
- NUUO Network Video Recorder (NVR) software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of video surveillance system, unauthorized access to live and recorded video feeds, potential physical security breach, and lateral movement to connected networks.
Likely Case
Unauthorized access to video management system, viewing of sensitive video footage, potential manipulation of recording settings, and access to connected camera systems.
If Mitigated
No access to system if default credentials are changed and proper network segmentation is implemented.
🎯 Exploit Status
Exploitation requires only knowledge of default credentials and network access to the system. Public Medium article demonstrates exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Later versions than v03.11.00
Vendor Advisory: http://nuuo.com
Restart Required: Yes
Instructions:
1. Upgrade to latest NUUO version from vendor website. 2. Apply patch if available. 3. Restart NUUO services. 4. Verify default credentials are changed.
🔧 Temporary Workarounds
Change Default Credentials
allImmediately change all default administrative credentials on NUUO systems
Use NUUO web interface to change admin password
Network Segmentation
allIsolate NUUO systems from internet and restrict internal network access
Configure firewall rules to restrict access to NUUO ports
🧯 If You Can't Patch
- Change all default credentials immediately and enforce strong password policies
- Implement network segmentation and firewall rules to restrict access to NUUO systems
🔍 How to Verify
Check if Vulnerable:
Check if NUUO version is v03.11.00 and test if default credentials work on administrative interfaceCheck Version:
Check version in NUUO web interface or system information panelVerify Fix Applied:
Verify NUUO version is updated beyond v03.11.00 and test that default credentials no longer work📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login
- Access from unusual IP addresses
- Administrative panel access outside normal hours
Network Indicators:
- Unauthorized access to NUUO administrative ports (typically 80/443)
- Traffic patterns indicating credential guessing
SIEM Query:
source="nuuo_logs" AND (event_type="login_success" AND user="admin") OR (event_type="failed_login" AND count>5)🔗 References
- http://nuuo.com
- https://medium.com/%40dnyaneshgawande111/use-of-default-credentials-to-unauthorised-remote-access-of-internal-panel-of-network-video-5490d107fa0
- http://nuuo.com
- https://medium.com/%40dnyaneshgawande111/use-of-default-credentials-to-unauthorised-remote-access-of-internal-panel-of-network-video-5490d107fa0
