CVE-2017-17951
📋 TL;DR
This vulnerability allows attackers to execute arbitrary SQL commands through the shopping-cart.php script's cusid parameter in PHP Multivendor Ecommerce. It affects websites running this specific e-commerce platform, potentially compromising database integrity and exposing sensitive customer data. Attackers can exploit this without authentication to manipulate or extract database contents.
💻 Affected Systems
- PHP Multivendor Ecommerce
📦 What is this software?
Php Multivendor Ecommerce by Php Multivendor Ecommerce Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of customer PII, payment information, administrative credentials, and potential remote code execution leading to full system takeover.
Likely Case
Data exfiltration of customer information, order details, and potentially administrative credentials, leading to further system compromise.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection, though system may still be vulnerable to other attacks.
🎯 Exploit Status
Simple SQL injection via GET/POST parameter. Public proof-of-concept available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor for latest patched version
Vendor Advisory: https://www.phpscriptsmall.com/
Restart Required: No
Instructions:
1. Contact PHP Scripts Mall for patched version. 2. Replace vulnerable shopping-cart.php file. 3. Implement parameterized queries in all database interactions. 4. Validate and sanitize all user inputs.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter cusid parameter to only accept expected values
// Add to shopping-cart.php before processing cusid:
if (!is_numeric($_GET['cusid']) || $_GET['cusid'] <= 0) {
die('Invalid customer ID');
}
Web Application Firewall Rule
linuxBlock SQL injection patterns targeting shopping-cart.php
ModSecurity rule: SecRule REQUEST_URI "@contains shopping-cart.php" "chain,id:1001,phase:2,deny,status:403,msg:'SQLi attempt detected'"
SecRule ARGS:cusid "@detectSQLi"
🧯 If You Can't Patch
- Implement strict input validation for all user-supplied parameters
- Deploy web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Test shopping-cart.php with SQL injection payload: shopping-cart.php?cusid=1' OR '1'='1Check Version:
Check PHP Multivendor Ecommerce version in admin panel or configuration filesVerify Fix Applied:
Attempt SQL injection test and verify proper error handling or rejection📡 Detection & Monitoring
Log Indicators:
- Multiple failed SQL queries from single IP
- Unusual database error messages in logs
- Requests to shopping-cart.php with SQL keywords in parameters
Network Indicators:
- Unusual database connection patterns
- Large data exfiltration from database server
SIEM Query:
source="web_logs" AND uri="*shopping-cart.php*" AND (param="*cusid*" AND value="*' OR*" OR value="*UNION*" OR value="*SELECT*" OR value="*--*" OR value="*;*" OR value="*/*")