CVE-2021-42064
📋 TL;DR
This vulnerability allows attackers to execute SQL injection attacks on SAP Commerce systems configured with Oracle databases when using parameterized 'in' clauses with over 1000 values. This exposes the backend database to unauthorized access and manipulation. Affected systems include SAP Commerce versions 1905, 2005, 2105, and 2011.
💻 Affected Systems
- SAP Commerce
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, privilege escalation, and potential full system takeover.
Likely Case
Unauthorized data access and extraction from the Oracle database, potentially exposing sensitive business information.
If Mitigated
Limited impact with proper input validation and query parameterization controls in place.
🎯 Exploit Status
Requires knowledge of SAP Commerce flexible search API and ability to craft queries with large parameterized 'in' clauses.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply SAP Note 3114134
Vendor Advisory: https://launchpad.support.sap.com/#/notes/3114134
Restart Required: Yes
Instructions:
1. Download patch from SAP Note 3114134. 2. Apply patch to affected SAP Commerce installation. 3. Restart SAP Commerce services. 4. Verify patch application.
🔧 Temporary Workarounds
Limit parameterized 'in' clause values
allModify application code to restrict parameterized 'in' clauses to accept no more than 1000 values.
Input validation for query parameters
allImplement strict input validation and sanitization for all query parameters in flexible search API calls.
🧯 If You Can't Patch
- Implement network segmentation to restrict database access
- Enable database auditing and monitor for unusual query patterns
🔍 How to Verify
Check if Vulnerable:
Check SAP Commerce version and verify if using Oracle database with flexible search API parameterized 'in' clauses accepting >1000 values.Check Version:
Check SAP Commerce version through administration console or configuration files.Verify Fix Applied:
Verify SAP Note 3114134 is applied and test that parameterized 'in' clauses with >1000 values no longer execute.📡 Detection & Monitoring
Log Indicators:
- Unusually large parameterized queries
- Database error logs showing SQL injection attempts
- Flexible search API logs with excessive parameter values
Network Indicators:
- Unusual database query patterns from application servers
- Increased database traffic volume
SIEM Query:
Search for flexible search API calls with parameter count > 1000 or database query errors containing SQL syntax anomalies.