CVE-2023-27569
📋 TL;DR
CVE-2023-27569 is a critical SQL injection vulnerability in the eo_tags module for PrestaShop that allows attackers to execute arbitrary SQL commands via manipulated HTTP User-Agent or Referer headers. This affects all PrestaShop installations using vulnerable versions of the eo_tags package. Successful exploitation could lead to complete database compromise.
💻 Affected Systems
- PrestaShop eo_tags module
📦 What is this software?
Eo Tags by Prestashop
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise including sensitive data theft, privilege escalation, and complete system takeover through SQL injection leading to remote code execution.
Likely Case
Database information disclosure, data manipulation, and potential administrative access to the PrestaShop backend.
If Mitigated
Limited impact with proper input validation and WAF rules blocking suspicious SQL patterns in headers.
🎯 Exploit Status
Exploitation requires no authentication and can be performed via simple HTTP requests with malicious headers. Public exploit details are available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.0
Vendor Advisory: https://security.profileo.com/cve/eo_tags_2023-27569-27570/
Restart Required: No
Instructions:
1. Log into PrestaShop admin panel. 2. Navigate to Modules > Module Manager. 3. Search for 'eo_tags' module. 4. Click 'Upgrade' to version 1.3.0. 5. Alternatively, download version 1.3.0 from the PrestaShop Addons marketplace and manually install.
🔧 Temporary Workarounds
Disable eo_tags module
allTemporarily disable the vulnerable module until patching is possible
Navigate to PrestaShop admin > Modules > Module Manager > eo_tags > Disable
WAF rule for SQL injection in headers
allImplement web application firewall rules to block SQL injection patterns in User-Agent and Referer headers
Add WAF rule: Detect and block SQL keywords (SELECT, UNION, INSERT, etc.) in User-Agent and Referer headers
🧯 If You Can't Patch
- Implement strict input validation to sanitize User-Agent and Referer headers before processing
- Deploy a web application firewall with SQL injection protection rules specifically for header fields
🔍 How to Verify
Check if Vulnerable:
Check eo_tags module version in PrestaShop admin panel under Modules > Module Manager. If version is below 1.3.0, the system is vulnerable.Check Version:
In PrestaShop admin: Modules > Module Manager > Search 'eo_tags' > Check version numberVerify Fix Applied:
Confirm eo_tags module version is 1.3.0 or higher in the module manager. Test with security scanning tools that check for SQL injection vulnerabilities.📡 Detection & Monitoring
Log Indicators:
- Unusually long User-Agent or Referer headers containing SQL keywords
- Multiple failed SQL queries from same IP with suspicious header patterns
- Database error logs showing SQL syntax errors from web requests
Network Indicators:
- HTTP requests with SQL injection payloads in User-Agent or Referer headers
- Abnormal database query patterns originating from web server
SIEM Query:
source="web_logs" AND (User-Agent CONTAINS "SELECT" OR Referer CONTAINS "UNION" OR User-Agent CONTAINS "INSERT" OR Referer CONTAINS "DELETE")