CVE-2022-30395
📋 TL;DR
Merchandise Online Store v1.0 contains a SQL injection vulnerability in the delete_cart function that allows attackers to execute arbitrary SQL commands. This affects all users running the vulnerable version of this e-commerce software. Attackers can potentially access, modify, or delete database contents.
💻 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 customer data, order information, and administrative credentials stored in the database.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only affecting non-sensitive data.
🎯 Exploit Status
Public proof-of-concept exists on GitHub. SQL injection is a well-understood attack vector with many automated tools available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement the workarounds below.
🔧 Temporary Workarounds
Input Validation and Parameterized Queries
allModify Master.php to implement proper input validation and use prepared statements for SQL queries
Edit /vloggers_merch/classes/Master.php to replace raw SQL with parameterized queries using PDO or mysqli prepared statements
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns
Add WAF rules to detect and block SQL injection attempts in query parameters
🧯 If You Can't Patch
- Isolate the application behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from the application server
🔍 How to Verify
Check if Vulnerable:
Test the /vloggers_merch/classes/Master.php?f=delete_cart endpoint with SQL injection payloads like ' OR '1'='1Check Version:
Check the application version in the source code or configuration filesVerify Fix Applied:
Test the same endpoint with SQL injection payloads and verify they are rejected or properly handled📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed delete_cart requests with suspicious parameters
- Database queries with unexpected UNION or SELECT statements
Network Indicators:
- HTTP requests to Master.php with SQL keywords in parameters
- Unusual database connection patterns from the application server
SIEM Query:
source="web_logs" AND uri="/vloggers_merch/classes/Master.php" AND (param="f" AND value="delete_cart") AND (param CONTAINS "UNION" OR param CONTAINS "SELECT" OR param CONTAINS "OR")