CVE-2024-57016
📋 TL;DR
This CVE describes an OS command injection vulnerability in TOTOLINK X5000R routers where an attacker can execute arbitrary commands via the 'user' parameter in the setVpnAccountCfg function. This allows remote code execution with the privileges of the vulnerable service. Users of affected TOTOLINK X5000R routers with vulnerable firmware versions are at risk.
💻 Affected Systems
- TOTOLINK X5000R
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary commands, install malware, pivot to internal networks, and maintain persistent access.
Likely Case
Attacker gains shell access to router, modifies configurations, intercepts network traffic, or uses router as pivot point for further attacks.
If Mitigated
Limited impact due to network segmentation, proper access controls, and monitoring preventing successful exploitation.
🎯 Exploit Status
Proof of concept available in GitHub repository. Exploitation requires understanding of router web interface and command injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check TOTOLINK for latest firmware updates
Vendor Advisory: https://www.totolink.net/
Restart Required: Yes
Instructions:
1. Log into router admin interface. 2. Navigate to firmware update section. 3. Download latest firmware from TOTOLINK website. 4. Upload and apply firmware update. 5. Reboot router after update completes.
🔧 Temporary Workarounds
Disable VPN functionality
allIf VPN features are not needed, disable them to remove attack surface
Restrict management interface access
allLimit access to router management interface to trusted IP addresses only
🧯 If You Can't Patch
- Implement network segmentation to isolate router from critical systems
- Deploy web application firewall (WAF) with command injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is V9.1.0cu.2350_B20230313 or earlier, likely vulnerable.Check Version:
Log into router web interface and check System Status or Firmware Version pageVerify Fix Applied:
After updating firmware, verify version is newer than V9.1.0cu.2350_B20230313 and test VPN configuration functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual commands in system logs
- Multiple failed authentication attempts to VPN configuration
- Unexpected process execution
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns suggesting command and control activity
SIEM Query:
source="router_logs" AND ("setVpnAccountCfg" OR "user parameter" OR suspicious command patterns)