CVE-2024-30628
📋 TL;DR
CVE-2024-30628 is a critical stack overflow vulnerability in Tenda FH1205 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the fromAddressNat function. This affects all users running Tenda FH1205 v2.0.0.7(775) firmware, potentially giving attackers full control of the device.
💻 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 strict inbound filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept available in GitHub repository. Exploit requires sending crafted HTTP request to vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda website for firmware updates. 2. If update available, download and install via router admin interface. 3. Reboot router after update. 4. Verify firmware version changed from v2.0.0.7(775).
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router admin interface
Login to router admin panel -> Advanced Settings -> Remote Management -> Disable
Network Segmentation
allIsolate router management interface to trusted network
Configure firewall rules to restrict access to router IP on port 80/443 to trusted IPs only
🧯 If You Can't Patch
- Replace vulnerable device with different model or vendor
- Place router behind dedicated firewall with strict inbound filtering
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is exactly v2.0.0.7(775), device is vulnerable.Check Version:
Login to router admin panel (typically http://192.168.0.1) and check System Status or Firmware Update section.Verify Fix Applied:
Verify firmware version has changed from v2.0.0.7(775) after update. Test with known exploit POC to confirm patched.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to router management interface
- Multiple failed login attempts followed by successful access
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic to known malicious IPs from router
- Port scanning originating from router
SIEM Query:
source_ip=router_ip AND (http_method=POST AND uri_contains="fromAddressNat" OR http_status=500)