CVE-2024-0918
📋 TL;DR
This critical vulnerability in TRENDnet TEW-800MB routers allows remote attackers to execute arbitrary operating system commands by manipulating the DeviceURL parameter in POST requests. Attackers can gain full control of affected devices without authentication. Only TRENDnet TEW-800MB routers running firmware version 1.0.1.0 are affected.
💻 Affected Systems
- TRENDnet TEW-800MB
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, pivot to internal networks, intercept all network traffic, or brick the device.
Likely Case
Attackers gain shell access to execute commands, potentially installing cryptocurrency miners, botnet malware, or network sniffers.
If Mitigated
No impact if device is patched or properly isolated from untrusted networks.
🎯 Exploit Status
Public exploit details available. Simple HTTP POST request with command injection payload required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor did not respond to disclosure. Consider replacing affected devices.
🔧 Temporary Workarounds
Network Segmentation
allIsolate TRENDnet TEW-800MB devices from untrusted networks and internet access
Access Control Lists
allRestrict HTTP/HTTPS access to device management interface to trusted IP addresses only
🧯 If You Can't Patch
- Replace affected TRENDnet TEW-800MB routers with different models from vendors providing security updates
- Deploy network monitoring to detect exploitation attempts and unusual outbound connections from the router
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface at http://[router-ip]/status.asp or via serial consoleCheck Version:
curl -s http://[router-ip]/status.asp | grep -i firmwareVerify Fix Applied:
No fix available to verify. Only complete mitigation is device replacement.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to device management interface with shell metacharacters in DeviceURL parameter
- Router logs showing command execution or configuration changes
Network Indicators:
- HTTP POST requests containing shell commands (;, |, &, $, etc.) in URL parameters
- Unusual outbound connections from router to external IPs
SIEM Query:
http.method:POST AND http.uri:*DeviceURL* AND (http.uri:*;* OR http.uri:*|* OR http.uri:*&* OR http.uri:*`* OR http.uri:*$*)