CVE-2024-48974
📋 TL;DR
This vulnerability allows attackers to push malicious firmware updates to ventilators without proper integrity checks, potentially compromising device functionality or configuration. It affects medical ventilators that lack firmware validation mechanisms.
💻 Affected Systems
- Medical ventilators with vulnerable firmware update mechanisms
⚠️ 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
Complete device compromise leading to patient harm through malfunction, unauthorized configuration changes, or sensitive medical data disclosure.
Likely Case
Unauthorized configuration changes disrupting normal operation or exposing device data to attackers.
If Mitigated
No impact if proper firmware signing and integrity checks are implemented and enforced.
🎯 Exploit Status
Requires network access to device and ability to push firmware updates
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory 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 security updates
2. Apply firmware updates with proper integrity checking
3. Restart device after update
4. Verify update integrity
🔧 Temporary Workarounds
Network Segmentation
allIsolate ventilators on separate network segments with strict access controls
Disable Remote Updates
allDisable remote firmware update capabilities if not required
🧯 If You Can't Patch
- Implement strict network access controls to ventilator management interfaces
- Monitor for unauthorized firmware update attempts and network traffic
🔍 How to Verify
Check if Vulnerable:
Check if firmware updates are accepted without cryptographic signature verificationCheck Version:
Check device firmware version through manufacturer's management interfaceVerify Fix Applied:
Verify firmware update process now requires and validates digital signatures📡 Detection & Monitoring
Log Indicators:
- Unauthorized firmware update attempts
- Firmware version changes without authorized maintenance windows
Network Indicators:
- Unexpected firmware update traffic to ventilator devices
- Unauthorized connections to device management ports
SIEM Query:
source_ip=* AND dest_port=* AND (event_type="firmware_update" OR protocol="TFTP")