CVE-2024-23747
📋 TL;DR
This IDOR vulnerability in ModernaNet Hospital Management System allows attackers to access sensitive medical records by manipulating URL parameters. Healthcare organizations using this system are affected, potentially exposing patient confidentiality and violating privacy regulations.
💻 Affected Systems
- Moderna Sistemas ModernaNet Hospital Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Mass exfiltration of all patient medical records, leading to identity theft, medical fraud, regulatory violations, and complete loss of patient trust.
Likely Case
Targeted access to specific patient records for blackmail, insurance fraud, or competitive intelligence gathering.
If Mitigated
Limited exposure of non-critical patient data with proper access controls and monitoring in place.
🎯 Exploit Status
Exploitation requires some authentication but minimal technical skill
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://modernasistemas.com.br/sitems/
Restart Required: No
Instructions:
Contact Moderna Sistemas for security updates and apply any available patches immediately
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock or monitor requests to /Modernanet/LAUDO/LAU0000100/Laudo with suspicious id parameters
WAF-specific configuration required
Access Control Enhancement
allImplement server-side authorization checks for all medical record access requests
Application code modification required
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the ModernaNet system from untrusted networks
- Deploy comprehensive logging and monitoring for all access to medical record endpoints
🔍 How to Verify
Check if Vulnerable:
Test if changing the 'id' parameter in /Modernanet/LAUDO/LAU0000100/Laudo?id= allows access to unauthorized medical recordsCheck Version:
Check system version in application interface or contact vendorVerify Fix Applied:
Verify that server-side authorization checks prevent unauthorized record access regardless of id parameter manipulation📡 Detection & Monitoring
Log Indicators:
- Rapid sequential access to multiple medical record IDs
- Access patterns showing ID enumeration
Network Indicators:
- Unusual volume of requests to medical record endpoints
- Requests with sequential or unusual ID parameters
SIEM Query:
source="modernanet" AND uri="/Modernanet/LAUDO/LAU0000100/Laudo" AND (id_parameter_changes > threshold OR rapid_id_enumeration)