CVE-2024-40089
📋 TL;DR
A command injection vulnerability in Vilo 5 Mesh WiFi System allows authenticated attackers to execute arbitrary shell commands by injecting them into the device name field. This affects Vilo 5 Mesh WiFi System users running firmware version 5.16.1.33 or earlier. Attackers with network access to the device can potentially gain full system control.
💻 Affected Systems
- Vilo 5 Mesh WiFi System
📦 What is this software?
Vilo 5 Firmware by Viloliving
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to install persistent backdoors, intercept all network traffic, pivot to other devices, or render the device unusable.
Likely Case
Attacker gains shell access to execute commands, potentially stealing credentials, modifying network settings, or launching attacks against other devices on the network.
If Mitigated
Limited impact if device is isolated from sensitive networks and attackers cannot authenticate to the management interface.
🎯 Exploit Status
Exploit requires authentication but is trivial to execute once authenticated. Public proof-of-concept available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 5.16.1.33
Vendor Advisory: http://vilo.com
Restart Required: Yes
Instructions:
1. Log into Vilo management interface. 2. Navigate to firmware update section. 3. Check for and apply latest firmware update. 4. Reboot device after update completes.
🔧 Temporary Workarounds
Restrict Management Access
allLimit access to Vilo management interface to trusted IP addresses only
Disable Remote Management
allDisable remote management features if not required
🧯 If You Can't Patch
- Isolate Vilo devices on separate VLAN from sensitive systems
- Implement strict network segmentation and firewall rules to limit device communication
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Vilo management interface under Settings > About. If version is 5.16.1.33 or lower, device is vulnerable.Check Version:
No CLI command available. Must check via web interface.Verify Fix Applied:
After updating, verify firmware version shows > 5.16.1.33 in management interface.📡 Detection & Monitoring
Log Indicators:
- Unusual device name changes containing shell metacharacters
- Unexpected system command execution in device logs
Network Indicators:
- Unusual outbound connections from Vilo device
- Suspicious traffic patterns from device management interface
SIEM Query:
source="vilo" AND (event="device_name_change" AND name MATCHES "[;|&`$()]" OR event="command_execution")