CVE-2024-48966
📋 TL;DR
This critical vulnerability allows attackers with physical access to a service technician's computer to access ventilator diagnostic information and modify ventilator settings without authentication. This affects healthcare facilities using specific ventilator models that rely on unauthenticated service tools. The lack of authentication in these tools enables unauthorized access to sensitive medical device functions.
💻 Affected Systems
- Ventilator service/calibration tools for specific medical ventilators (exact models not specified in advisory)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could modify ventilator settings to deliver incorrect oxygen levels or pressure, potentially causing patient harm or death, while also exfiltrating sensitive patient diagnostic data.
Likely Case
Unauthorized personnel accessing ventilator diagnostic information and potentially altering device settings, compromising patient safety and violating medical data privacy regulations.
If Mitigated
With proper physical security controls and network segmentation, the risk is limited to authorized service personnel only, maintaining normal ventilator operation.
🎯 Exploit Status
Exploitation requires physical access to service computers but no technical expertise beyond basic computer operation. The tools lack any authentication mechanism.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in advisory - contact vendor for specific patched versions
Vendor Advisory: https://www.cisa.gov/news-events/ics-medical-advisories/icsma-24-319-01
Restart Required: Yes
Instructions:
1. Contact ventilator manufacturer for updated service tools
2. Install updated service/calibration software on all service technician computers
3. Verify authentication is required before accessing diagnostic or calibration functions
4. Restart service computers after installation
🔧 Temporary Workarounds
Physical Access Controls
allRestrict physical access to service technician computers and ventilators
Network Segmentation
allIsolate service computers from general network and implement strict firewall rules
🧯 If You Can't Patch
- Implement strict physical security controls for all service technician workstations
- Maintain detailed access logs and audit trails for all service tool usage
🔍 How to Verify
Check if Vulnerable:
Check if ventilator service/calibration tools launch without requiring any authentication (username/password, certificate, or other credentials)Check Version:
Check service tool version through vendor-provided method or application propertiesVerify Fix Applied:
Attempt to access diagnostic or calibration functions and verify authentication is now required📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to service tools
- Service tool usage outside normal maintenance windows
- Multiple failed authentication attempts if authentication is implemented
Network Indicators:
- Unusual network traffic from service computers to ventilators
- Communication patterns inconsistent with normal maintenance activities
SIEM Query:
ServiceToolAccess WHERE (EventType = 'AuthenticationFailure' OR EventType = 'UnauthorizedAccess') AND DeviceType = 'VentilatorService'