CVE-2024-33215
📋 TL;DR
This CVE describes a critical stack-based buffer overflow vulnerability in Tenda FH1206 routers. Attackers can exploit this vulnerability by sending specially crafted requests to the mitInterface parameter, potentially allowing remote code execution. All users running the affected firmware version are vulnerable.
💻 Affected Systems
- Tenda FH1206
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote unauthenticated attacker gains full control of the router, enabling them to intercept traffic, pivot to internal networks, or deploy persistent malware.
Likely Case
Remote code execution leading to router compromise, network traffic interception, and potential credential theft.
If Mitigated
If properly segmented and firewalled, impact limited to router compromise without lateral movement.
🎯 Exploit Status
The vulnerability requires no authentication and has publicly available proof-of-concept code, making exploitation trivial for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. If update available, download and install via router web interface. 3. Reboot router after installation.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router web interface
Network segmentation
allIsolate router management interface to separate VLAN
🧯 If You Can't Patch
- Replace affected routers with different models or brands
- Implement strict firewall rules blocking access to port 80/443 on router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface at 192.168.0.1 or 192.168.1.1Check Version:
curl -s http://router-ip/goform/getStatus | grep versionVerify Fix Applied:
Verify firmware version has been updated to a version newer than V1.2.0.8(8155)_EN📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /ip/goform/addressNat
- Multiple failed buffer overflow attempts
- Router reboot logs without user action
Network Indicators:
- Unusual outbound connections from router
- Traffic interception patterns
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (uri="/ip/goform/addressNat" OR message="buffer overflow")