CVE-2025-30142
📋 TL;DR
This vulnerability allows attackers to bypass authentication on G-Net Dashcam BB GONX devices by spoofing the MAC address of a previously paired device. Attackers can gain full access to the dashcam without proper authentication. All users of affected G-Net dashcam devices are at risk.
💻 Affected Systems
- G-Net Dashcam BB GONX
📦 What is this software?
G Onx Firmware by Gnetsystem
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full control of dashcam, potentially accessing live video feeds, stored footage, and device settings, enabling surveillance, data theft, or device manipulation.
Likely Case
Unauthorized access to dashcam feeds and stored footage, compromising privacy and potentially enabling stalking or evidence tampering.
If Mitigated
Limited impact with proper network segmentation and MAC address filtering, restricting attacker access to dashcam functionality.
🎯 Exploit Status
Exploitation requires network access to capture legitimate MAC address via ARP scanning or sniffing, then spoofing that address.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor for latest firmware
Vendor Advisory: https://www.gnetsystem.com/eng/product/list?viewMode=view&idx=246&ca_id=0201
Restart Required: Yes
Instructions:
1. Check G-Net website for firmware updates. 2. Download latest firmware. 3. Connect dashcam to computer. 4. Run firmware update tool. 5. Restart device after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate dashcam on separate VLAN or network segment to limit exposure.
MAC Address Filtering
allConfigure network equipment to only allow specific MAC addresses to communicate with dashcam.
🧯 If You Can't Patch
- Disable wireless connectivity and use wired connection only if supported.
- Physically secure device to prevent unauthorized physical access.
🔍 How to Verify
Check if Vulnerable:
Check if device uses only MAC address verification for pairing by reviewing pairing process documentation.Check Version:
Check device settings menu for firmware version information.Verify Fix Applied:
Test if MAC address spoofing still allows unauthorized pairing after firmware update.📡 Detection & Monitoring
Log Indicators:
- Multiple MAC addresses connecting to same dashcam
- Unusual pairing events
Network Indicators:
- ARP spoofing activity on dashcam network
- Multiple devices with same MAC address
SIEM Query:
source="network_traffic" MAC_address=* AND event="pairing_attempt" | stats count by MAC_address