CVE-2024-30606
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda FH1203 routers by exploiting a stack overflow in the DHCP client list function. Attackers can gain full control of affected devices, potentially compromising network security. Users running vulnerable firmware versions are affected.
💻 Affected Systems
- Tenda FH1203
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, network traffic interception, credential theft, and lateral movement to other devices on the network.
Likely Case
Remote code execution allowing attackers to modify router settings, intercept traffic, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repositories, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates
2. Download latest firmware for FH1203
3. Access router admin interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router after update
🔧 Temporary Workarounds
Disable remote administration
allPrevents external access to vulnerable interface
Access router admin > Advanced > Remote Management > Disable
Network segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Replace affected devices with patched or different models
- Implement strict firewall rules blocking all inbound traffic to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or Firmware Upgrade sectionCheck Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version is no longer v2.0.1.6 and test with known exploit payloads📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/fromDhcpListClient
- Multiple failed authentication attempts
- Unexpected firmware modification logs
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting command and control communication
- Port scanning originating from router
SIEM Query:
source="router.log" AND (uri="/goform/fromDhcpListClient" OR "page parameter overflow")