CVE-2021-23405
📋 TL;DR
This is a SQL injection vulnerability in Pimcore's ClassificationstoreController that allows attackers to execute arbitrary SQL commands. It affects Pimcore installations before version 10.0.7 where the storeId parameter is not properly validated in collectionsActionGet and groupsActionGet methods.
💻 Affected Systems
- pimcore/pimcore
📦 What is this software?
Pimcore by Pimcore
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, and potential remote code execution through database functions.
Likely Case
Unauthorized data access, data exfiltration, and potential privilege escalation within the application.
If Mitigated
No impact if proper input validation and parameterized queries are implemented.
🎯 Exploit Status
Exploitation requires access to the affected endpoints, typically requiring some level of authentication. The SQL injection is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.0.7
Vendor Advisory: https://github.com/pimcore/pimcore/pull/9572
Restart Required: No
Instructions:
1. Update Pimcore to version 10.0.7 or later using composer update pimcore/pimcore. 2. Verify the update completed successfully. 3. Clear any application caches if necessary.
🔧 Temporary Workarounds
Input Validation Middleware
allImplement custom middleware to validate and sanitize the storeId parameter before it reaches the vulnerable methods.
Web Application Firewall Rule
allConfigure WAF rules to block SQL injection patterns in requests to ClassificationstoreController endpoints.
🧯 If You Can't Patch
- Restrict access to ClassificationstoreController endpoints using network ACLs or authentication requirements
- Implement database-level protections such as least privilege database accounts and query logging
🔍 How to Verify
Check if Vulnerable:
Check Pimcore version via composer show pimcore/pimcore or check the application version in admin interface.Check Version:
composer show pimcore/pimcore | grep versionsVerify Fix Applied:
Verify version is 10.0.7 or higher and test the affected endpoints with SQL injection payloads to confirm they're blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed authentication attempts followed by ClassificationstoreController access
- HTTP requests with SQL injection patterns in storeId parameter
Network Indicators:
- HTTP POST/GET requests to /admin/classificationstore/* endpoints with suspicious parameters
SIEM Query:
source="web_logs" AND (uri_path="/admin/classificationstore/*" AND (param="storeId" AND value MATCH "[';]|UNION|SELECT"))