CVE-2024-42562
📋 TL;DR
This SQL injection vulnerability in Pharmacy Management System allows attackers to execute arbitrary SQL commands through the invoice_number parameter in preview.php. Attackers could potentially access, modify, or delete sensitive pharmacy data including patient records and prescription information. Any organization using the vulnerable version of this software is affected.
💻 Affected Systems
- Pharmacy Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to theft of all patient medical records, prescription data, and financial information, followed by ransomware deployment or data destruction.
Likely Case
Data exfiltration of sensitive patient information and prescription records, potentially leading to medical identity theft and regulatory violations.
If Mitigated
Limited data exposure if proper input validation and database permissions are implemented, with minimal impact to system availability.
🎯 Exploit Status
SQL injection via GET parameter makes exploitation straightforward. Public proof-of-concept available in the referenced GitHub gist.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Check for updated version from software vendor
2. If no patch available, implement parameterized queries or input validation
3. Replace vulnerable preview.php with secure version
4. Test functionality after changes
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd server-side validation to ensure invoice_number contains only expected characters
Edit preview.php to add: if(!preg_match('/^[a-zA-Z0-9-]+$/', $_GET['invoice_number'])) { die('Invalid input'); }
Web Application Firewall Rule
allBlock SQL injection patterns in the invoice_number parameter
WAF specific - configure rule to block SQL keywords in invoice_number parameter
🧯 If You Can't Patch
- Implement network segmentation to isolate the Pharmacy Management System from other critical systems
- Enable detailed logging and monitoring of all database queries from preview.php
🔍 How to Verify
Check if Vulnerable:
Test preview.php with SQL injection payload in invoice_number parameter: preview.php?invoice_number=1' OR '1'='1Check Version:
Check git commit hash or version file if availableVerify Fix Applied:
Attempt SQL injection after fixes; system should reject malicious input or return generic error📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts following SQL errors
- Long or unusual invoice_number parameters in web logs
Network Indicators:
- SQL keywords in GET parameters to preview.php
- Unusual database traffic patterns
SIEM Query:
source="web_logs" AND uri="/preview.php" AND (query_string="*invoice_number=*'*" OR query_string="*invoice_number=*%27*")