CVE-2024-30596
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1202 routers that allows remote code execution by sending specially crafted data to the deviceId parameter. Attackers can exploit this to take full control of affected routers. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- Tenda FH1202
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to persistent backdoor installation, network traffic interception, lateral movement to connected devices, and botnet recruitment.
Likely Case
Router takeover enabling DNS hijacking, credential theft from network traffic, and denial of service to connected devices.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository. Exploitation requires network access to router's web interface.
🛠️ 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 FH1202
3. Access router admin interface
4. Navigate to System Tools > Firmware Upgrade
5. Upload and install new firmware
6. Reboot router
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router administration interface
Network Segmentation
allIsolate router management interface to separate VLAN
🧯 If You Can't Patch
- Replace vulnerable routers with different models
- Implement strict firewall rules blocking all inbound traffic to router management interface
🔍 How to Verify
Check if Vulnerable:
Access router web interface, navigate to System Status page and check firmware version matches v1.2.0.14(408)Check Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version has changed from v1.2.0.14(408) to newer version📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/setDeviceName
- Multiple failed login attempts followed by successful access
- Unexpected process execution in router logs
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (uri="/goform/setDeviceName" OR process="malicious_binary")