CVE-2024-37645
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on TRENDnet TEW-814DAP wireless access points by exploiting a stack overflow in the formSysLog endpoint. Attackers can send specially crafted requests to the submit-url parameter to gain control of affected devices. This affects all users of the vulnerable firmware version.
💻 Affected Systems
- TRENDnet TEW-814DAP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise leading to persistent backdoor installation, network pivoting, and complete loss of confidentiality/integrity/availability.
Likely Case
Remote code execution allowing attackers to modify device configuration, intercept network traffic, or use device as botnet node.
If Mitigated
Limited impact if device is behind firewall with strict access controls and network segmentation.
🎯 Exploit Status
Public GitHub repository contains detailed vulnerability analysis and proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check TRENDnet website for firmware updates
2. Download latest firmware for TEW-814DAP
3. Access device web interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot device
🔧 Temporary Workarounds
Network Access Restriction
linuxBlock external access to device management interface
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Remote Management
allTurn off remote administration features
🧯 If You Can't Patch
- Segment affected devices on isolated network VLAN
- Implement strict firewall rules to block all inbound traffic to device management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in device web interface under System Status or Administration sectionCheck Version:
curl -s http://device-ip/ | grep -i firmwareVerify Fix Applied:
Verify firmware version has been updated to a version later than 1.01B01📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /formSysLog endpoint
- Large payloads in HTTP requests
- Multiple failed login attempts followed by formSysLog access
Network Indicators:
- HTTP POST requests to /formSysLog with oversized submit-url parameter
- Unusual outbound connections from device after exploitation
SIEM Query:
source="web_logs" AND uri="/formSysLog" AND method="POST" AND size_bytes>1000