CVE-2024-30626
📋 TL;DR
This CVE describes a stack overflow vulnerability in Tenda FH1205 routers that allows remote attackers to execute arbitrary code by sending specially crafted requests to the setSchedWifi function. The vulnerability affects users of Tenda FH1205 routers with vulnerable firmware versions. Attackers can potentially gain full control of affected devices.
💻 Affected Systems
- Tenda FH1205
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, allowing attackers to install malware, pivot to internal networks, or create persistent backdoors.
Likely Case
Device crash/reboot (denial of service) or limited code execution to modify device settings and network configuration.
If Mitigated
No impact if device is patched or network segmentation prevents access to vulnerable interface.
🎯 Exploit Status
Exploitation requires access to the web management interface. The GitHub reference contains technical details about the vulnerability.
🛠️ 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 for FH1205
3. Access router web interface
4. Navigate to firmware upgrade section
5. Upload and apply new firmware
6. Reboot router after update
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Network Segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Replace affected devices with patched or different models
- Implement strict network access controls to limit who can reach router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under System Status or similar sectionCheck Version:
Not applicable - check via web interfaceVerify Fix Applied:
Verify firmware version is newer than v2.0.0.7(775) after update📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts to router web interface
- Unusual POST requests to setSchedWifi endpoint
Network Indicators:
- Unusual traffic patterns to router management port (typically 80/443)
- Exploit attempt patterns in HTTP requests
SIEM Query:
source_ip="router_ip" AND (http_uri="/goform/setSchedWifi" OR http_user_agent_contains="exploit")