CVE-2024-30622
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1205 routers that allows remote code execution by sending specially crafted requests to the fromAddressNat function. Attackers can exploit this to take full control of affected routers. All users of Tenda FH1205 v2.0.0.7(775) are affected.
💻 Affected Systems
- Tenda FH1205
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise 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 part of a botnet.
If Mitigated
Limited impact if device is behind firewall with restricted WAN access and proper network segmentation.
🎯 Exploit Status
Public GitHub repository contains detailed analysis and likely exploit code. Stack overflow vulnerabilities in embedded devices are commonly weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda official website for firmware updates
2. If update available, download and flash firmware
3. Factory reset after update
4. Reconfigure with secure settings
🔧 Temporary Workarounds
Network Isolation
allPlace router behind firewall with strict inbound rules
Disable Remote Management
allTurn off WAN-side administration access
🧯 If You Can't Patch
- Replace vulnerable device with patched alternative
- Implement strict network segmentation to isolate router from critical systems
🔍 How to Verify
Check if Vulnerable:
Check router web interface or serial console for firmware version v2.0.0.7(775)Check Version:
Check router web interface at 192.168.0.1 or 192.168.1.1 under System StatusVerify Fix Applied:
Verify firmware version has changed from v2.0.0.7(775) to a newer version📡 Detection & Monitoring
Log Indicators:
- Unusual traffic to router management interface
- Multiple failed exploit attempts
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting C2 communication
- Port scanning originating from router
SIEM Query:
source_ip=router_ip AND (http_method=POST AND uri_contains="fromAddressNat" OR abnormal_port_activity)