CVE-2020-19640
📋 TL;DR
This vulnerability allows unauthenticated attackers to reboot INSMA Wifi Mini Spy 1080P HD Security IP Camera devices via a hidden reboot command. This causes a Denial of Service by disrupting camera functionality. Only users of the specific affected camera model are impacted.
💻 Affected Systems
- INSMA Wifi Mini Spy 1080P HD Security IP Camera
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Persistent attackers could repeatedly reboot the camera, rendering it unusable for extended periods and potentially causing physical security gaps.
Likely Case
Temporary camera unavailability during reboot cycles, disrupting surveillance coverage for 1-2 minutes per attack.
If Mitigated
No impact if device is not internet-facing or properly firewalled.
🎯 Exploit Status
Simple HTTP request to '/media/?action=cmd' endpoint triggers reboot. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Check manufacturer website for firmware updates, though none have been announced for this vulnerability.
🔧 Temporary Workarounds
Network Segmentation
allIsolate camera on separate VLAN without internet access
Firewall Block
linuxBlock external access to camera web interface port (typically 80/443)
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Replace vulnerable cameras with different models from reputable vendors
- Implement physical security controls to compensate for potential camera downtime
🔍 How to Verify
Check if Vulnerable:
Send HTTP GET request to http://[camera-ip]/media/?action=cmd and check if device rebootsCheck Version:
Check camera web interface settings page for firmware versionVerify Fix Applied:
Same test should return error or no response if properly mitigated📡 Detection & Monitoring
Log Indicators:
- HTTP requests to '/media/?action=cmd' endpoint
- Unexpected device reboots in system logs
Network Indicators:
- HTTP GET requests to camera IP on port 80/443 with '/media/?action=cmd' path
SIEM Query:
source_ip="*" AND destination_port="80" AND http_uri="/media/?action=cmd"