CVE-2022-46499
📋 TL;DR
Hospital Management System 1.0 contains a SQL injection vulnerability in the pat_number parameter at his_admin_view_single_patient.php. This allows attackers to execute arbitrary SQL commands on the database, potentially compromising patient data and system integrity. Organizations using this specific software version are affected.
💻 Affected Systems
- Hospital Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to patient data theft, system takeover, and potential ransomware deployment across the entire hospital network.
Likely Case
Unauthorized access to sensitive patient records (PHI/PII), modification of medical data, and potential privilege escalation within the system.
If Mitigated
Limited data exposure if proper input validation and database permissions are implemented, with minimal operational disruption.
🎯 Exploit Status
Exploitation requires admin access to reach the vulnerable endpoint. The SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
1. Implement parameterized queries or prepared statements for the pat_number parameter. 2. Add input validation to reject malicious SQL characters. 3. Apply the fix to his_admin_view_single_patient.php and all similar endpoints.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests to the vulnerable endpoint.
Input Validation Filter
allAdd server-side validation to only accept numeric values for the pat_number parameter.
// PHP example: if(!is_numeric($_GET['pat_number'])) { die('Invalid input'); }
🧯 If You Can't Patch
- Isolate the Hospital Management System on a separate network segment with strict access controls.
- Implement database monitoring to detect unusual SQL queries and restrict database user permissions to minimum required.
🔍 How to Verify
Check if Vulnerable:
Test the his_admin_view_single_patient.php endpoint with SQL injection payloads in the pat_number parameter (e.g., pat_number=1' OR '1'='1).Check Version:
Check the software version in the application interface or configuration files.Verify Fix Applied:
Attempt the same SQL injection tests and verify they are rejected or properly sanitized without database errors.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by access to admin endpoints
- HTTP requests with SQL keywords in pat_number parameter
Network Indicators:
- Unusual outbound database connections from the web server
- Traffic patterns indicating data exfiltration
SIEM Query:
source="web_logs" AND uri="*his_admin_view_single_patient.php*" AND (query="*UNION*" OR query="*SELECT*" OR query="*OR '1'='1*")