CVE-2020-12763
📋 TL;DR
This vulnerability allows unauthenticated remote attackers to execute arbitrary code or cause denial of service on TRENDnet ProView Wireless cameras by sending specially crafted RTSP packets with long Authorization headers. It affects all users of the vulnerable camera firmware version. The CVSS 9.8 score indicates critical severity.
💻 Affected Systems
- TRENDnet ProView Wireless camera TV-IP512WN
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains full control of the camera, pivots to internal network, installs persistent malware, or uses device in botnets.
Likely Case
Remote code execution leading to camera compromise, surveillance disruption, or device becoming part of IoT botnet.
If Mitigated
Denial of service only if exploit fails or controls limit impact.
🎯 Exploit Status
Detailed exploit analysis published with proof-of-concept. Simple buffer overflow with predictable offsets.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not found
Restart Required: Yes
Instructions:
1. Check TRENDnet website for firmware updates. 2. If update available, download from official site. 3. Upload via camera web interface. 4. Reboot camera.
🔧 Temporary Workarounds
Network segmentation
allIsolate cameras from internet and restrict internal access
Firewall blocking
linuxBlock RTSP port 554 at network perimeter
iptables -A INPUT -p tcp --dport 554 -j DROP
iptables -A INPUT -p udp --dport 554 -j DROP
🧯 If You Can't Patch
- Remove cameras from internet-facing networks immediately
- Implement strict network segmentation with firewall rules blocking RTSP traffic
🔍 How to Verify
Check if Vulnerable:
Check firmware version in camera web interface or attempt exploitation with published PoC.Check Version:
Check via camera web interface at http://[camera-ip]/ or via ONVIF discoveryVerify Fix Applied:
Verify firmware version is updated beyond 1.0.4 and test with exploit PoC.📡 Detection & Monitoring
Log Indicators:
- Unusual RTSP traffic patterns
- Camera service crashes
- Long Authorization headers in RTSP logs
Network Indicators:
- Excessive RTSP packets to port 554
- Unusual payload sizes in RTSP headers
SIEM Query:
source_port:554 AND (header_length > 1000 OR contains(authorization, 'Basic '))