CVE-2022-2107
📋 TL;DR
The MiCODUS MV720 GPS tracker API server uses a hard-coded master password in its authentication mechanism, allowing attackers to send SMS commands to GPS trackers as if they were the legitimate owner. This affects all users of MiCODUS MV720 GPS trackers with vulnerable firmware versions.
💻 Affected Systems
- MiCODUS MV720 GPS Tracker
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could remotely disable vehicle tracking, cut fuel supply, geofence vehicles, or track individuals without consent, potentially enabling theft, kidnapping, or surveillance.
Likely Case
Unauthorized tracking of vehicles/assets, disabling of GPS functionality, or sending false location data to owners.
If Mitigated
Limited impact if devices are behind firewalls with restricted SMS command access and network segmentation.
🎯 Exploit Status
Exploitation requires knowledge of the hard-coded password and ability to send SMS commands to the device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact vendor for latest firmware
Vendor Advisory: https://www.cisa.gov/uscert/ics/advisories/icsa-22-200-01
Restart Required: Yes
Instructions:
1. Contact MiCODUS for updated firmware. 2. Download firmware update. 3. Apply update to GPS tracker via manufacturer's instructions. 4. Verify update applied successfully.
🔧 Temporary Workarounds
Network Segmentation
allIsolate GPS trackers on separate network segments with restricted inbound/outbound access
SMS Command Restriction
allConfigure mobile carriers to restrict SMS commands to authorized numbers only
🧯 If You Can't Patch
- Disconnect affected GPS trackers from networks immediately
- Replace vulnerable devices with alternative GPS tracking solutions
🔍 How to Verify
Check if Vulnerable:
Check if device responds to SMS commands using the hard-coded password '123456' or other default credentialsCheck Version:
Contact manufacturer for firmware version checking procedureVerify Fix Applied:
Test if SMS commands with default passwords no longer work after firmware update📡 Detection & Monitoring
Log Indicators:
- Unexpected SMS command patterns
- Authentication attempts with default credentials
- GPS tracking anomalies
Network Indicators:
- SMS traffic to GPS devices from unauthorized sources
- API calls using hard-coded credentials
SIEM Query:
sms_command: * AND (password:123456 OR auth:default) OR device_type:MiCODUS MV720 AND anomaly_score > threshold