CVE-2021-40814
📋 TL;DR
This SQL injection vulnerability in the Customer Photo Gallery addon for PrestaShop allows attackers to execute arbitrary SQL commands through the vulnerable module. It affects PrestaShop websites using the Customer Photo Gallery addon before version 2.9.4. Attackers could potentially access, modify, or delete database content.
💻 Affected Systems
- PrestaShop Customer Photo Gallery addon
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of customer data, administrative credentials, and full control of the PrestaShop installation.
Likely Case
Data exfiltration of customer information, potential privilege escalation, and database manipulation.
If Mitigated
Limited impact due to proper input validation and database permissions, potentially only read-only access to non-sensitive data.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited and tools exist for automated exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.9.4
Vendor Advisory: https://www.getastra.com/blog/911/plugin-exploit/prestashops-customer-photo-gallery-module-vulnerable-to-sql-injection-attacks/
Restart Required: No
Instructions:
1. Log into PrestaShop admin panel
2. Navigate to Modules > Module Manager
3. Find Customer Photo Gallery addon
4. Update to version 2.9.4 or later
5. Clear PrestaShop cache
🔧 Temporary Workarounds
Disable vulnerable module
allTemporarily disable the Customer Photo Gallery addon until patched
Navigate to PrestaShop admin > Modules > Module Manager > Customer Photo Gallery > Disable
Web Application Firewall rules
allImplement WAF rules to block SQL injection patterns targeting the module
Add SQL injection detection rules to your WAF configuration
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries at application level
- Restrict database user permissions to minimum required for module functionality
🔍 How to Verify
Check if Vulnerable:
Check module version in PrestaShop admin panel under Modules > Module Manager > Customer Photo GalleryCheck Version:
SELECT version FROM ps_module WHERE name = 'customerphotogallery'Verify Fix Applied:
Confirm module version is 2.9.4 or higher in PrestaShop admin📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts from single IP
- Unexpected database schema changes
Network Indicators:
- SQL injection patterns in HTTP requests to PrestaShop endpoints
- Unusual outbound database connections
SIEM Query:
source="web_server" AND ("customerphotogallery" OR "gallery") AND ("UNION" OR "SELECT" OR "INSERT" OR "DELETE" OR "UPDATE")