CVE-2024-9001
📋 TL;DR
This critical vulnerability allows remote attackers to execute arbitrary operating system commands on TOTOLINK T10 routers by exploiting a command injection flaw in the setTracerouteCfg function. Attackers can take full control of affected devices without authentication. All users of TOTOLINK T10 routers with vulnerable firmware are affected.
💻 Affected Systems
- TOTOLINK T10
📦 What is this software?
T10 Firmware by Totolink
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attackers to install persistent backdoors, pivot to internal networks, intercept traffic, or use the device in botnets.
Likely Case
Remote code execution leading to device takeover, credential theft, network reconnaissance, and potential lateral movement.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Public exploit code is available on GitHub. The vulnerability requires no authentication and has simple exploitation steps.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.totolink.net/
Restart Required: Yes
Instructions:
No official patch available. Monitor vendor website for firmware updates. If update becomes available: 1. Download firmware from vendor site 2. Log into router admin interface 3. Navigate to firmware upgrade section 4. Upload and apply new firmware 5. Reboot device
🔧 Temporary Workarounds
Network Access Control
linuxBlock external access to router web interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Remote Management
allTurn off remote administration features in router settings
🧯 If You Can't Patch
- Isolate affected routers in separate VLAN with strict network segmentation
- Implement network monitoring for unusual traffic patterns to/from router management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router web interface under System Status or About page. If version is 4.1.8cu.5207, device is vulnerable.Check Version:
curl -s http://router-ip/cgi-bin/cstecgi.cgi | grep -i versionVerify Fix Applied:
After applying any firmware update, verify version has changed from 4.1.8cu.5207. Test the vulnerable endpoint with safe payloads to confirm command injection is no longer possible.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /cgi-bin/cstecgi.cgi with command parameter
- System logs showing unexpected process execution
- Failed authentication attempts followed by command injection attempts
Network Indicators:
- Unusual outbound connections from router to external IPs
- Traffic patterns suggesting reverse shells
- Multiple rapid requests to vulnerable endpoint
SIEM Query:
source="router_logs" AND (uri="/cgi-bin/cstecgi.cgi" AND (param="command" OR param="setTracerouteCfg")) AND (payload CONTAINS "|" OR payload CONTAINS ";" OR payload CONTAINS "`" OR payload CONTAINS "$")