CVE-2023-25946
📋 TL;DR
This authentication bypass vulnerability in Qrio Lock smart locks allows network-adjacent attackers to intercept communication and perform unauthorized operations. Attackers can potentially unlock doors or manipulate lock settings without proper credentials. Affects Qrio Lock (Q-SL2) firmware version 2.0.9 and earlier.
💻 Affected Systems
- Qrio Lock (Q-SL2)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized physical access to secured premises, theft, or safety compromise through remote unlocking of doors
Likely Case
Unauthorized access to specific locations by attackers within wireless range of the lock
If Mitigated
Limited impact if locks are in physically secure areas with additional security layers
🎯 Exploit Status
Requires network analysis tools and understanding of the lock's communication protocol
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.0 or later
Vendor Advisory: https://qrio.me/article/announce/2023/4140/
Restart Required: Yes
Instructions:
1. Open Qrio app 2. Check for firmware updates 3. Apply update to version 2.1.0 or later 4. Lock will restart automatically
🔧 Temporary Workarounds
Network Segmentation
allIsolate smart lock network from other devices to limit attack surface
Physical Security Enhancement
allAdd secondary physical locks or security measures as backup
🧯 If You Can't Patch
- Disable wireless functionality and use only physical key operation
- Move lock to physically secure location with limited network access
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Qrio app: Settings > Device Information > Firmware VersionCheck Version:
Not applicable - check via mobile app interfaceVerify Fix Applied:
Confirm firmware version shows 2.1.0 or higher in Qrio app📡 Detection & Monitoring
Log Indicators:
- Unusual unlock patterns
- Multiple failed authentication attempts followed by successful operation
Network Indicators:
- Unusual Bluetooth/Wi-Fi traffic patterns near lock
- Suspicious network analysis tools in proximity
SIEM Query:
Not applicable - primarily physical/logical access monitoring required