CVE-2018-11560
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Insteon HD IP Camera White 2864-222 devices by exploiting a stack-based buffer overflow in the webService binary. Attackers can hijack control flow via a crafted usr key with a long remoteIp parameter sent to cgi-bin/CGIProxy.fcgi on port 34100. Only users of the specific Insteon camera model are affected.
💻 Affected Systems
- Insteon HD IP Camera White 2864-222
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing remote code execution, camera control takeover, network pivoting, and persistent backdoor installation.
Likely Case
Remote code execution leading to camera manipulation, video feed interception, and device integration into botnets.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts.
🎯 Exploit Status
Public exploit code exists in GitHub repositories, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No known vendor advisory
Restart Required: No
Instructions:
No official patch available. Consider replacing affected devices with supported models.
🔧 Temporary Workarounds
Network Segmentation
allIsolate cameras on separate VLAN with strict firewall rules blocking external access to port 34100.
Access Control Lists
allImplement ACLs to restrict access to camera management interfaces to authorized IPs only.
🧯 If You Can't Patch
- Remove affected cameras from internet-facing positions immediately
- Deploy network monitoring for exploitation attempts on port 34100
🔍 How to Verify
Check if Vulnerable:
Check device model number and attempt to access cgi-bin/CGIProxy.fcgi on port 34100Check Version:
Check device web interface or physical label for model numberVerify Fix Applied:
No official fix available to verify📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to CGIProxy.fcgi with long parameters
- Device reboot or service crashes
Network Indicators:
- Traffic to port 34100 with unusually long HTTP parameters
- Outbound connections from camera to unknown IPs
SIEM Query:
source_ip="camera_ip" AND dest_port=34100 AND http_uri="*CGIProxy.fcgi*" AND http_param_length>100