CVE-2024-31810
📋 TL;DR
This vulnerability involves a hardcoded root password in TOTOLINK EX200 routers, allowing attackers to gain administrative access. Anyone using affected TOTOLINK EX200 routers with the vulnerable firmware version is at risk of complete device compromise.
💻 Affected Systems
- TOTOLINK EX200
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full root access to the router, enabling them to intercept all network traffic, install persistent malware, pivot to internal networks, and permanently compromise the device.
Likely Case
Attackers use the known password to gain administrative access, change router settings, intercept sensitive data, and use the router as a foothold for further attacks.
If Mitigated
With proper network segmentation and access controls, impact is limited to the router itself, though attackers could still intercept traffic passing through the device.
🎯 Exploit Status
Exploitation requires only knowledge of the hardcoded password and SSH/Telnet access to the router. The GitHub reference provides technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch is currently available. Check TOTOLINK's website for firmware updates and security advisories.
🔧 Temporary Workarounds
Change root password
linuxManually change the root password to a strong, unique password
passwd root
Disable remote administration
allDisable SSH/Telnet access from WAN interfaces
🧯 If You Can't Patch
- Isolate affected routers in a separate network segment with strict firewall rules
- Implement network monitoring to detect unauthorized access attempts to router administration interfaces
🔍 How to Verify
Check if Vulnerable:
Check if /etc/shadow.sample contains a hardcoded password entry for root. Use: cat /etc/shadow.sample | grep rootCheck Version:
Check firmware version in router web interface or use: cat /proc/versionVerify Fix Applied:
Verify the root password has been changed by attempting to log in with the old password (should fail) and with the new password (should succeed if correct).📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful root login
- SSH/Telnet connections from unexpected sources to router
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns indicating router compromise
SIEM Query:
source="router_logs" (event="authentication success" AND user="root") OR (event="ssh connection" AND dest_ip="router_ip")