CVE-2024-50589
📋 TL;DR
This vulnerability allows an unauthenticated attacker on the same local network as a medical office to query an unprotected FHIR API, potentially exposing sensitive electronic health records (EHR). It affects systems running Hasomed's Elefant software with default configurations, posing a significant risk to patient privacy and data security.
💻 Affected Systems
- Hasomed Elefant
⚠️ 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
Mass exfiltration of all EHR data accessible via the FHIR API, leading to identity theft, medical fraud, and regulatory violations.
Likely Case
Unauthorized access to patient records, compromising confidentiality and potentially enabling targeted attacks or data breaches.
If Mitigated
Limited or no data exposure if proper network segmentation and authentication controls are implemented.
🎯 Exploit Status
Exploitation is straightforward via network queries to the FHIR API; no authentication required, making it easy for attackers with network access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: https://hasomed.de/produkte/elefant/
Restart Required: No
Instructions:
Check vendor advisory for updates; if no patch, implement workarounds like network segmentation and API authentication.
🔧 Temporary Workarounds
Implement Network Segmentation
linuxRestrict access to the FHIR API by isolating it on a secure network segment, limiting exposure to authorized users only.
Use firewall rules to block unauthorized IPs, e.g., iptables -A INPUT -s <trusted_network> -p tcp --dport <api_port> -j ACCEPT
iptables -A INPUT -p tcp --dport <api_port> -j DROP
Enable API Authentication
allConfigure the FHIR API to require authentication, such as API keys or tokens, to prevent unauthenticated access.
Refer to software documentation to set up authentication mechanisms; no generic commands available.
🧯 If You Can't Patch
- Deploy network monitoring to detect unauthorized API queries and alert on suspicious activity.
- Apply strict access controls and audit logs to track all API interactions for forensic analysis.
🔍 How to Verify
Check if Vulnerable:
Attempt to query the FHIR API endpoint without authentication from a local network device; if data is returned, the system is vulnerable.Check Version:
Check software version via vendor-specific methods; no generic command provided.Verify Fix Applied:
After applying workarounds, test that unauthenticated queries to the FHIR API are blocked or return access denied errors.📡 Detection & Monitoring
Log Indicators:
- Unusual or high-volume requests to FHIR API endpoints from unauthorized IPs.
- Log entries showing access attempts without authentication tokens.
Network Indicators:
- Traffic to FHIR API ports from unexpected internal sources.
- Patterns of data exfiltration via API queries.
SIEM Query:
source_ip NOT IN (trusted_ips) AND destination_port = <api_port> AND protocol = HTTP