CVE-2023-27748
📋 TL;DR
This vulnerability allows attackers to upload malicious firmware to BlackVue DR750-2CH LTE dashcams due to missing authenticity verification. Attackers can execute arbitrary code and install backdoors on affected devices. All users of the vulnerable firmware version are affected.
💻 Affected Systems
- BlackVue DR750-2CH LTE
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of dashcam system allowing persistent backdoor access, data exfiltration, and potential lateral movement to connected networks.
Likely Case
Unauthorized firmware installation leading to device malfunction, data theft, or surveillance compromise.
If Mitigated
No impact if firmware authenticity checks are properly implemented and validated.
🎯 Exploit Status
GitHub repositories contain proof-of-concept code demonstrating the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://blackvue.com
Restart Required: No
Instructions:
Check BlackVue website for firmware updates. If available, download and install through the BlackVue app or web interface.
🔧 Temporary Workarounds
Disable remote firmware updates
allPrevent unauthorized firmware uploads by disabling remote update capabilities
Network segmentation
allIsolate dashcams on separate network segments to limit attack surface
🧯 If You Can't Patch
- Disconnect devices from internet and use local-only operation
- Implement strict firewall rules to block all incoming connections to dashcams
🔍 How to Verify
Check if Vulnerable:
Check firmware version in BlackVue app or web interface. If version is 1.012_2022.10.26, device is vulnerable.Check Version:
Check via BlackVue mobile app or web interface firmware settingsVerify Fix Applied:
Verify firmware version has been updated to a version later than 1.012_2022.10.26📡 Detection & Monitoring
Log Indicators:
- Unexpected firmware update events
- Unusual network traffic from dashcam
Network Indicators:
- Unusual outbound connections from dashcam
- Firmware upload traffic to unexpected sources
SIEM Query:
source="blackvue" AND (event="firmware_update" OR event="unauthorized_access")🔗 References
- https://blackvue.com
- https://github.com/eyJhb/blackvue-cve-2022
- https://github.com/eyJhb/blackvue-cve-2023
- https://shop.blackvue.com/product/dr750-2ch-ir-lte/
- https://blackvue.com
- https://github.com/eyJhb/blackvue-cve-2022
- https://github.com/eyJhb/blackvue-cve-2023
- https://shop.blackvue.com/product/dr750-2ch-ir-lte/
