CVE-2020-22170
📋 TL;DR
CVE-2020-22170 is a SQL injection vulnerability in PHPGurukul Hospital Management System v4.0 that allows remote unauthenticated attackers to execute arbitrary SQL commands. This can lead to unauthorized access to sensitive database information including patient records, medical data, and system credentials. Any organization using the vulnerable version of this hospital management software is affected.
💻 Affected Systems
- PHPGurukul Hospital Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to exposure of all patient medical records, financial data, and administrative credentials, potentially enabling further system takeover.
Likely Case
Extraction of sensitive patient information and system credentials, leading to data breach and potential regulatory compliance violations.
If Mitigated
Limited information disclosure if proper input validation and database permissions are configured, though vulnerability still exists.
🎯 Exploit Status
Public proof-of-concept code is available on GitHub, making exploitation trivial for attackers with basic SQL injection knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
1. Check for official updates from PHPGurukul
2. If no patch available, implement workarounds
3. Consider migrating to alternative hospital management systems
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement proper input validation and parameterized queries in get_doctor.php
Modify hms/get_doctor.php to use prepared statements with PDO or mysqli
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block SQL injection patterns in requests to /hms/get_doctor.php
🧯 If You Can't Patch
- Implement network segmentation to isolate the hospital management system from other critical systems
- Deploy database monitoring to detect unusual SQL queries and access patterns
🔍 How to Verify
Check if Vulnerable:
Test the /hms/get_doctor.php endpoint with SQL injection payloads or check if the system is running version 4.0Check Version:
Check the system documentation or about page for version informationVerify Fix Applied:
Test the vulnerable endpoint with SQL injection payloads to ensure they are properly rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed SQL injection attempts
- Unexpected database queries from web application
Network Indicators:
- SQL injection patterns in HTTP requests to /hms/get_doctor.php
- Unusual database connection patterns
SIEM Query:
source="web_server_logs" AND (uri="/hms/get_doctor.php" AND (message="sql" OR message="syntax" OR message="union"))