CVE-2024-34945
📋 TL;DR
A stack-based buffer overflow vulnerability in Tenda FH1206 routers allows remote attackers to execute arbitrary code by sending specially crafted requests to the PPW parameter. This affects all users running the vulnerable firmware version. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- Tenda FH1206
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full router compromise, credential theft, network pivoting, and persistent backdoor installation.
Likely Case
Router takeover enabling traffic interception, DNS manipulation, and network disruption.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted.
🎯 Exploit Status
The vulnerability requires no authentication and has public proof-of-concept details available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. If available, download the latest firmware. 3. Log into router admin panel. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to the router's web interface
Network segmentation
allIsolate the router from critical internal networks
🧯 If You Can't Patch
- Replace the router with a different model that receives security updates
- Implement strict firewall rules to block all access to the router's web interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin panel under System Status or similar sectionCheck Version:
No CLI command; check via web interface at http://router-ip/Verify Fix Applied:
Verify firmware version has changed from V1.2.0.8(8155)_EN to a newer version📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /ip/goform/WizardHandle with long PPW parameter values
- Multiple failed login attempts followed by exploitation attempts
Network Indicators:
- Unusual outbound connections from router to unknown IPs
- DNS queries to suspicious domains
SIEM Query:
source="router_logs" AND uri="/ip/goform/WizardHandle" AND (param="PPW" OR ppw*) AND length>100