CVE-2022-31340
📋 TL;DR
Simple Inventory System v1.0 contains a SQL injection vulnerability in the table_edit_ajax.php endpoint that allows attackers to execute arbitrary SQL commands. This affects all deployments of Simple Inventory System v1.0 that expose the vulnerable endpoint. Attackers can potentially access, modify, or delete database contents.
💻 Affected Systems
- Simple Inventory System
📦 What is this software?
Simple Inventory System by Simple Inventory System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, or remote code execution if database functions allow it.
Likely Case
Unauthorized data access and extraction of sensitive inventory, user, or system information from the database.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository. SQL injection is straightforward with common tools like sqlmap.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Replace vulnerable file with patched version implementing parameterized queries or input validation.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize user inputs before processing SQL queries
Edit /inventory/table_edit_ajax.php to implement mysqli_real_escape_string() or prepared statements
Web Application Firewall
allDeploy WAF with SQL injection protection rules
Configure WAF to block SQL injection patterns at /inventory/table_edit_ajax.php
🧯 If You Can't Patch
- Block access to /inventory/table_edit_ajax.php via web server configuration or firewall rules
- Implement network segmentation to isolate the inventory system from sensitive networks
🔍 How to Verify
Check if Vulnerable:
Test /inventory/table_edit_ajax.php endpoint with SQL injection payloads like ' OR '1'='1Check Version:
Check version in system configuration files or about pageVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return error or sanitized response📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple requests to table_edit_ajax.php with SQL keywords
Network Indicators:
- HTTP POST requests to /inventory/table_edit_ajax.php containing SQL injection patterns
SIEM Query:
source="web_server" AND uri="/inventory/table_edit_ajax.php" AND (payload="UNION" OR payload="SELECT" OR payload="OR '1'='1")