CVE-2023-41525
📋 TL;DR
Hospital Management System v4 contains a SQL injection vulnerability in the patient_contact parameter of patientsearch.php. This allows attackers to execute arbitrary SQL commands on the database, potentially affecting all users of this software version.
💻 Affected Systems
- Hospital Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including patient records, admin credentials, and system takeover leading to data breach, ransomware deployment, or system destruction.
Likely Case
Unauthorized access to sensitive patient data (PHI/PII), privilege escalation, and potential data exfiltration.
If Mitigated
Limited impact with proper input validation and WAF rules blocking malicious SQL patterns.
🎯 Exploit Status
Simple SQL injection with public proof-of-concept available. No authentication required to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
1. Review the GitHub repository for updates
2. Apply parameterized queries to patientsearch.php
3. Implement input validation for patient_contact parameter
4. Test thoroughly before deployment
🔧 Temporary Workarounds
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns in patient_contact parameter
# Example ModSecurity rule:
SecRule ARGS:patient_contact "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'"
# Example nginx rule:
location ~* patientsearch\.php { if ($args ~* "(?i)(union|select|insert|update|delete|drop|exec|--|#|\/\*|\*\/)") { return 403; } }
Input Validation Filter
linuxAdd server-side validation to restrict patient_contact parameter to expected formats
# PHP validation example:
$patient_contact = filter_input(INPUT_GET, 'patient_contact', FILTER_SANITIZE_STRING);
if (!preg_match('/^[0-9\-\+\s\(\)]{7,15}$/', $patient_contact)) { die('Invalid contact format'); }
🧯 If You Can't Patch
- Isolate the Hospital Management System behind a reverse proxy with strict input filtering
- Disable or restrict access to patientsearch.php endpoint if not critical
🔍 How to Verify
Check if Vulnerable:
Test patientsearch.php with SQL injection payload: patientsearch.php?patient_contact=1' OR '1'='1Check Version:
Check PHP files for version comments or review system documentationVerify Fix Applied:
Test with same payload - should return error or no data, not execute SQL. Verify parameterized queries are implemented.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts after SQL injection
- Unusual database queries from web server IP
Network Indicators:
- HTTP requests with SQL keywords in patient_contact parameter
- Unusual outbound database connections from web server
SIEM Query:
source="web_logs" AND (patient_contact="*' OR*" OR patient_contact="*UNION SELECT*" OR patient_contact="*;--*")