CVE-2023-26109
📋 TL;DR
This vulnerability in the node-bluetooth-serial-port package allows attackers to cause a buffer overflow by providing overly long input to the findSerialPortChannel method. This affects all applications using this npm package for Bluetooth communication. Attackers could potentially execute arbitrary code or crash the application.
💻 Affected Systems
- node-bluetooth-serial-port
📦 What is this software?
Node Bluetooth Serial Port by Node Bluetooth Serial Port Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment on affected systems.
Likely Case
Application crash (denial of service) or limited memory corruption leading to unstable Bluetooth functionality.
If Mitigated
Minimal impact if input validation is implemented at application layer or if Bluetooth access is restricted.
🎯 Exploit Status
Exploitation requires sending malicious input to the Bluetooth service, which may require proximity or network access to Bluetooth interfaces.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available
Vendor Advisory: https://security.snyk.io/vuln/SNYK-JS-NODEBLUETOOTHSERIALPORT-3311820
Restart Required: Yes
Instructions:
1. Remove node-bluetooth-serial-port from package.json. 2. Run npm uninstall node-bluetooth-serial-port. 3. Find alternative Bluetooth library. 4. Update application code to use new library. 5. Restart application services.
🔧 Temporary Workarounds
Input validation wrapper
allImplement input length validation before calling findSerialPortChannel method
// JavaScript example: if (input.length > MAX_ALLOWED_LENGTH) throw new Error('Input too long');
Disable Bluetooth functionality
allTemporarily disable Bluetooth features in application if not critical
// Set Bluetooth functionality flag to false in application configuration
🧯 If You Can't Patch
- Implement network segmentation to isolate Bluetooth-enabled systems
- Deploy application-level firewalls to monitor and restrict Bluetooth traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check package.json or node_modules for node-bluetooth-serial-port dependencyCheck Version:
npm list node-bluetooth-serial-portVerify Fix Applied:
Verify package is removed from node_modules and package.json, and application uses alternative Bluetooth library📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unusually long Bluetooth device names in logs
- Repeated Bluetooth connection failures
Network Indicators:
- Abnormal Bluetooth packet sizes
- Multiple rapid Bluetooth connection attempts
- Bluetooth service restarts
SIEM Query:
source="application.logs" AND ("buffer overflow" OR "segmentation fault" OR "node-bluetooth")