CVE-2024-54907
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on TOTOLINK A3002R routers via the formWsc function in the /bin/boa web server. Attackers can take full control of affected devices without authentication. Only TOTOLINK A3002R routers running the specific vulnerable firmware version are affected.
💻 Affected Systems
- TOTOLINK A3002R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent malware, pivot to internal networks, intercept all network traffic, or brick the device.
Likely Case
Attackers gain shell access to install cryptocurrency miners, create botnet nodes, or steal credentials from connected devices.
If Mitigated
If network segmentation and strict firewall rules are in place, impact is limited to the router itself without lateral movement.
🎯 Exploit Status
Public GitHub repository contains working exploit code. Exploitation requires sending crafted HTTP requests to the router's web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check TOTOLINK website for firmware updates
2. Download latest firmware for A3002R
3. Access router admin panel
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
Access router admin panel -> System -> Remote Management -> Disable
Firewall Block Web Interface
linuxBlock external access to router web ports (typically 80/443)
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for suspicious HTTP requests to router IP
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin panel under System -> Firmware Upgrade. If version matches V4.0.0-B20230531.1404, device is vulnerable.Check Version:
curl -s http://router-ip/cgi-bin/version or check web interfaceVerify Fix Applied:
After firmware update, verify version no longer matches vulnerable version and test if exploit POC no longer works.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP POST requests to /cgi-bin/formWsc
- Multiple failed login attempts followed by successful access
- Suspicious process execution in router logs
Network Indicators:
- HTTP requests with shell command patterns in parameters
- Outbound connections from router to suspicious IPs
- Unusual traffic patterns from router management interface
SIEM Query:
source="router_logs" AND (uri="/cgi-bin/formWsc" OR cmd="boa")