CVE-2024-41465
📋 TL;DR
CVE-2024-41465 is a stack-based buffer overflow vulnerability in Tenda FH1201 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the vulnerable endpoint. This affects all users running Tenda FH1201 firmware version 1.2.0.14. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- Tenda FH1201
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full router compromise, attacker persistence, network traffic interception, and lateral movement to connected devices.
Likely Case
Router compromise leading to denial of service, configuration changes, or credential theft from connected devices.
If Mitigated
Limited impact if network segmentation isolates the router and regular backups allow quick restoration.
🎯 Exploit Status
Public proof-of-concept code exists in GitHub repositories. The vulnerability requires no authentication and has straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. If update available, download and install via web interface. 3. Reboot router after installation. 4. Verify firmware version changed from v1.2.0.14.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Access router admin panel → Advanced → Remote Management → Disable
Network segmentation
allIsolate router management interface from untrusted networks
Configure firewall rules to restrict access to router IP on port 80/443
🧯 If You Can't Patch
- Replace affected router with different model or vendor
- Implement strict network access controls to limit who can reach router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface: Login → System Status → Firmware Version. If version is 1.2.0.14, device is vulnerable.Check Version:
curl -s http://router-ip/ | grep -i firmware or check web interface manuallyVerify Fix Applied:
After updating, verify firmware version is no longer 1.2.0.14. Test by attempting to access /ip/goform/setcfm with monitoring for crashes.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /ip/goform/setcfm
- Router crash/reboot logs
- Unusual configuration changes
Network Indicators:
- Large POST payloads to router port 80/443
- Traffic to /ip/goform/setcfm endpoint
- Router becoming unresponsive
SIEM Query:
source="router_logs" AND (uri="/ip/goform/setcfm" OR message="crash" OR message="reboot")