CVE-2024-30601
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Tenda FH1203 routers by exploiting a stack overflow in the saveParentControlInfo function's time parameter. Attackers can gain full control of affected devices, potentially compromising network security. All users of Tenda FH1203 v2.0.1.6 routers are affected.
💻 Affected Systems
- Tenda FH1203 router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to persistent backdoor installation, network traffic interception, lateral movement to other devices, and participation in botnets.
Likely Case
Router compromise allowing attackers to modify DNS settings, intercept credentials, disable security features, and use the device for further attacks.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation prevents lateral movement.
🎯 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 website for firmware updates 2. Download latest firmware 3. Access router admin interface 4. Navigate to firmware upgrade section 5. Upload and apply new firmware 6. Reboot router
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Network segmentation
allIsolate router management interface to trusted network
🧯 If You Can't Patch
- Replace affected routers with patched or different models
- Implement strict firewall rules blocking all inbound traffic to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or Firmware Upgrade sectionCheck Version:
Check via web interface: http://router_ip/login.html → System StatusVerify Fix Applied:
Verify firmware version is newer than v2.0.1.6 after update📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to saveParentControlInfo endpoint
- Multiple failed login attempts followed by successful exploitation
- Router configuration changes without authorized user action
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains
- Traffic patterns indicating command and control communication
SIEM Query:
source="router_logs" AND (uri="/goform/saveParentControlInfo" OR message="saveParentControlInfo")