CVE-2022-30384
📋 TL;DR
Merchandise Online Store v1.0 contains a SQL injection vulnerability in the delete_inventory function that allows attackers to execute arbitrary SQL commands. This affects all installations of this specific e-commerce software version. Attackers can potentially access, modify, or delete database content.
💻 Affected Systems
- Merchandise Online Store
📦 What is this software?
Merchandise Online Store by Merchandise Online Store Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, and potential remote code execution if database functions allow it.
Likely Case
Unauthorized access to sensitive customer data (PII, payment info), inventory manipulation, and potential privilege escalation.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permissions restricting dangerous operations.
🎯 Exploit Status
Exploitation requires authentication to access the inventory management functionality. The vulnerability is in a POST parameter that lacks proper input sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
1. Review the Master.php file at /vloggers_merch/classes/Master.php
2. Locate the delete_inventory function
3. Replace raw SQL queries with parameterized prepared statements
4. Implement proper input validation for all user-supplied parameters
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests
Input Validation Filter
allAdd server-side input validation to reject SQL injection patterns
🧯 If You Can't Patch
- Restrict access to the vulnerable endpoint using network ACLs or authentication requirements
- Implement database user with minimal privileges (read-only where possible) to limit damage
🔍 How to Verify
Check if Vulnerable:
Test the /vloggers_merch/classes/Master.php?f=delete_inventory endpoint with SQL injection payloads in POST parametersCheck Version:
Check application version in configuration files or admin panelVerify Fix Applied:
Verify that parameterized queries are used and test with SQL injection payloads to confirm they're blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed delete_inventory requests with SQL syntax patterns
- Unexpected database queries from application user
Network Indicators:
- HTTP POST requests to /vloggers_merch/classes/Master.php containing SQL keywords in parameters
- Unusual database connection patterns from application server
SIEM Query:
source="web_logs" AND uri="/vloggers_merch/classes/Master.php" AND (param CONTAINS "UNION" OR param CONTAINS "SELECT" OR param CONTAINS "INSERT" OR param CONTAINS "DELETE")