CVE-2024-37641
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on TRENDnet TEW-814DAP wireless access points via a stack overflow in the formNewSchedule endpoint. Attackers can exploit this by sending specially crafted requests to the submit-url parameter. All users of affected firmware versions are at risk.
💻 Affected Systems
- TRENDnet TEW-814DAP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, and lateral movement to other devices on the network.
Likely Case
Remote code execution allowing attackers to modify device settings, disrupt network connectivity, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if device is behind firewall with restricted access, though still vulnerable to internal threats.
🎯 Exploit Status
The GitHub repository contains detailed exploitation information including proof-of-concept code. Exploitation requires network access to the device's web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch is currently available. Monitor TRENDnet's security advisories page for updates.
🔧 Temporary Workarounds
Network Segmentation
allIsolate the TEW-814DAP device on a separate VLAN with restricted access
Access Control Lists
allImplement firewall rules to restrict access to the device's web interface (typically port 80/443)
🧯 If You Can't Patch
- Replace the device with a supported model that receives security updates
- Disable the web interface entirely if not needed for operations
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface at http://[device-ip]/status.asp or via SSH if enabledCheck Version:
curl -s http://[device-ip]/status.asp | grep -i firmwareVerify Fix Applied:
Verify firmware version is updated beyond 1.01B01 when patch becomes available📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /formNewSchedule endpoint
- Multiple failed authentication attempts followed by successful formNewSchedule access
Network Indicators:
- Unusual outbound connections from the access point
- Traffic patterns suggesting command and control communication
SIEM Query:
source="trendnet_access.log" AND (uri="/formNewSchedule" OR uri="/cgi-bin/formNewSchedule") AND method="POST"