CVE-2024-42973
📋 TL;DR
This vulnerability in Tenda FH1206 routers allows attackers to trigger a stack overflow via a crafted POST request to the fromSetlpBind function, causing Denial of Service (DoS). Attackers can crash the device by exploiting the page parameter. Users running Tenda FH1206 v02.03.01.35 are affected.
💻 Affected Systems
- Tenda FH1206
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device crash requiring physical reboot, potentially leading to extended network downtime and service disruption.
Likely Case
Router becomes unresponsive, requiring manual reboot and causing temporary network outage.
If Mitigated
If isolated from untrusted networks, impact limited to internal disruption only.
🎯 Exploit Status
Public GitHub repository contains detailed analysis and likely exploit code; simple POST request required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check Tenda website for firmware updates regularly.
🔧 Temporary Workarounds
Disable web management interface
allPrevent access to vulnerable web interface by disabling it if not needed.
Access router settings → Management → Disable web management
Restrict web interface access
allLimit web interface access to trusted IP addresses only.
Access router settings → Firewall → Add rule to restrict web interface to specific IPs
🧯 If You Can't Patch
- Isolate router from untrusted networks using VLANs or network segmentation
- Implement strict firewall rules to block external access to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface: Login → System Status → Firmware VersionCheck Version:
Not applicable - check via web interfaceVerify Fix Applied:
Verify firmware version is newer than v02.03.01.35📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to fromSetlpBind with malformed page parameter
- Router crash/reboot logs
Network Indicators:
- Unusual POST requests to router management interface
- Sudden loss of router connectivity
SIEM Query:
source="router_logs" AND (uri="/goform/fromSetlpBind" OR message="crash" OR message="reboot")