CVE-2022-28023
📋 TL;DR
CVE-2022-28023 is a critical SQL injection vulnerability in Purchase Order Management System v1.0 that allows attackers to execute arbitrary SQL commands via the delete_supplier function. This affects all users running the vulnerable version of this software, potentially leading to complete database compromise.
💻 Affected Systems
- Purchase Order Management System
📦 What is this software?
Purchase Order Management System by Purchase Order Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database takeover allowing data theft, modification, deletion, and potential remote code execution on the database server.
Likely Case
Unauthorized access to sensitive purchase order data, supplier information, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
Exploitation requires authentication to access the supplier management functionality. 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:
No official patch available. Consider migrating to a supported alternative or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries in the delete_supplier function
Modify /purchase_order/classes/Master.php to use prepared statements
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block SQL injection attempts to /purchase_order/classes/Master.php
🧯 If You Can't Patch
- Isolate the Purchase Order Management System from internet access
- Implement strict network segmentation and monitor all access to the vulnerable endpoint
🔍 How to Verify
Check if Vulnerable:
Check if running Purchase Order Management System v1.0 and test the /purchase_order/classes/Master.php?f=delete_supplier endpoint with SQL injection payloadsCheck Version:
Check application version in admin panel or review source code headersVerify Fix Applied:
Test the vulnerable endpoint with SQL injection payloads to ensure they are properly rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed delete_supplier attempts
- SQL syntax errors in application logs
Network Indicators:
- HTTP POST requests to /purchase_order/classes/Master.php with SQL keywords in parameters
SIEM Query:
source="web_logs" AND uri="/purchase_order/classes/Master.php" AND (param="delete_supplier" OR param CONTAINS "UNION" OR param CONTAINS "SELECT" OR param CONTAINS "OR 1=1")