CVE-2024-56526
📋 TL;DR
A vulnerability in OXID eShop allows CMS pages with Smarty syntax errors to display user information. This affects OXID eShop installations using CMS pages with Smarty templates. The issue exposes potentially sensitive user data through error messages.
💻 Affected Systems
- OXID eShop
📦 What is this software?
Eshop by Oxid Esales
Eshop by Oxid Esales
⚠️ Risk & Real-World Impact
Worst Case
Sensitive user information (names, emails, addresses) could be exposed to unauthorized visitors through error messages on CMS pages.
Likely Case
Limited information disclosure through error messages, potentially revealing user data or system details that could aid further attacks.
If Mitigated
With proper error handling and input validation, the risk is reduced to minimal information leakage.
🎯 Exploit Status
Exploitation requires access to CMS pages with Smarty syntax errors. Attackers may need to discover or create such pages.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.0 and later
Vendor Advisory: https://bugs.oxid-esales.com/view.php?id=7743
Restart Required: No
Instructions:
1. Upgrade OXID eShop to version 7.0.0 or later. 2. Review and fix any CMS pages with Smarty syntax errors. 3. Test CMS functionality after upgrade.
🔧 Temporary Workarounds
Disable CMS pages with Smarty errors
allIdentify and disable CMS pages containing Smarty syntax errors to prevent information disclosure.
Review CMS pages in admin panel for errors
Disable problematic pages
Implement custom error handling
allOverride default error handling to prevent sensitive information from being displayed in error messages.
Modify Smarty error handling configuration
Implement custom error templates
🧯 If You Can't Patch
- Disable all CMS pages or restrict access to authenticated users only
- Implement web application firewall rules to block access to error messages containing user data
🔍 How to Verify
Check if Vulnerable:
Check OXID eShop version. If below 7.0.0 and using CMS pages with Smarty, the system is vulnerable.Check Version:
Check OXID eShop admin panel or configuration files for version informationVerify Fix Applied:
Verify OXID eShop version is 7.0.0 or later. Test CMS pages with intentional Smarty syntax errors to ensure no user information is displayed.📡 Detection & Monitoring
Log Indicators:
- Smarty syntax error messages in web server logs
- Unusual access patterns to CMS pages
Network Indicators:
- HTTP requests to CMS pages returning error messages with user data
SIEM Query:
web_server_logs WHERE (message CONTAINS 'Smarty' AND message CONTAINS 'error') OR (response_body CONTAINS user_patterns)