CVE-2024-30583
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1202 routers that allows remote code execution. Attackers can exploit the mitInterface parameter in the fromAddressNat function to crash the device or execute arbitrary code. This affects users running vulnerable firmware versions of the Tenda FH1202 router.
💻 Affected Systems
- Tenda FH1202
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing persistent remote access, network traffic interception, and lateral movement to connected devices.
Likely Case
Router crash requiring physical reset, temporary denial of service, and potential credential theft from router configuration.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and regular patching schedule.
🎯 Exploit Status
Public GitHub repository contains proof-of-concept exploit code. No authentication required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda official website for firmware updates
2. Download latest firmware for FH1202
3. Access router admin interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and apply new firmware
6. Wait for automatic reboot
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Access router admin panel > Advanced > System Tools > Remote Management > Disable
Restrict Management Interface
allLimit admin access to specific IP addresses
Access router admin panel > Advanced > Security > Access Control > Add allowed IPs
🧯 If You Can't Patch
- Replace vulnerable device with supported model
- Place router behind firewall with strict inbound rules blocking ports 80, 443, 8080
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status > Firmware VersionCheck Version:
curl -s http://router-ip/status.cgi | grep versionVerify Fix Applied:
Verify firmware version is newer than v1.2.0.14(408) after update📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /goform/fromAddressNat with long mitInterface parameter
- Router crash/reboot events in system logs
- Unusual outbound connections from router
Network Indicators:
- HTTP requests with oversized mitInterface parameter (>1000 chars)
- Traffic to router on port 80/443 from unexpected sources
- Router becoming unresponsive to ping
SIEM Query:
source="router_logs" AND (uri_path="/goform/fromAddressNat" AND content_length>1000)