CVE-2018-9318
📋 TL;DR
This vulnerability in BMW's Telematics Control Unit allows remote attackers to compromise vehicle systems via cellular networks. Attackers can potentially control critical functions like door locks, climate control, and engine management. Affects BMW vehicles produced between 2012 and 2018 with the vulnerable telematics unit.
💻 Affected Systems
- BMW vehicles with Telematics Control Unit (TCB/Telematic Communication Box)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete vehicle takeover allowing remote control of safety-critical systems including braking, steering, and engine functions while vehicle is in motion.
Likely Case
Unauthorized access to vehicle systems enabling door unlocking, engine start/stop, climate control manipulation, and location tracking.
If Mitigated
Limited impact with proper network segmentation and cellular access controls preventing unauthorized connections.
🎯 Exploit Status
Research demonstrates successful exploitation via cellular networks; requires knowledge of vehicle telematics systems and cellular protocols.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: BMW software updates via dealership service
Vendor Advisory: https://www.bmw.com/en/innovation/security-update.html
Restart Required: Yes
Instructions:
1. Contact authorized BMW dealership 2. Schedule service appointment 3. Dealer applies telematics software update 4. Verify update completion with dealer
🔧 Temporary Workarounds
Disable ConnectedDrive Services
allTemporarily disable telematics connectivity to prevent remote exploitation
Contact BMW ConnectedDrive support to suspend services
Physical SIM Card Removal
allRemove SIM card from telematics unit to disable cellular connectivity
Professional removal required at BMW service center
🧯 If You Can't Patch
- Park vehicles in Faraday cage garages or use signal-blocking bags when not in use
- Implement physical security measures and disable remote access features
🔍 How to Verify
Check if Vulnerable:
Check vehicle production date (2012-2018) and confirm telematics unit installation via VIN check with BMWCheck Version:
Requires BMW diagnostic equipment at authorized service centerVerify Fix Applied:
Verify with BMW dealership that latest telematics software update has been applied📡 Detection & Monitoring
Log Indicators:
- Unusual telematics connection attempts
- Unauthorized remote access logs in vehicle systems
Network Indicators:
- Suspicious cellular traffic to vehicle telematics
- Anomalous CAN bus messages
SIEM Query:
Not applicable - requires specialized automotive monitoring systems🔗 References
- http://www.securityfocus.com/bid/104258
- https://keenlab.tencent.com/en/Experimental_Security_Assessment_of_BMW_Cars_by_KeenLab.pdf
- https://www.theregister.co.uk/2018/05/23/bmw_security_bugs/
- http://www.securityfocus.com/bid/104258
- https://keenlab.tencent.com/en/Experimental_Security_Assessment_of_BMW_Cars_by_KeenLab.pdf
- https://www.theregister.co.uk/2018/05/23/bmw_security_bugs/
