CVE-2023-25223
📋 TL;DR
CRMEB versions up to 1.3.4 contain a SQL injection vulnerability in the admin user list API endpoint. Attackers can execute arbitrary SQL commands through the /api/admin/user/list endpoint, potentially compromising the database. This affects all CRMEB installations running vulnerable versions.
💻 Affected Systems
- CRMEB
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, privilege escalation, and potential remote code execution if database functions allow it.
Likely Case
Unauthorized data access, extraction of sensitive user/admin information, and potential authentication bypass.
If Mitigated
Limited impact with proper input validation, parameterized queries, and WAF protection in place.
🎯 Exploit Status
Exploitation requires admin authentication. The vulnerability is well-documented in public GitHub issues with technical details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: >1.3.4
Vendor Advisory: https://github.com/crmeb/crmeb_java/issues/9
Restart Required: Yes
Instructions:
1. Upgrade CRMEB to version newer than 1.3.4. 2. Restart the application server. 3. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns targeting /api/admin/user/list endpoint
Endpoint Restriction
allRestrict access to /api/admin/user/list endpoint to trusted IP addresses only
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries for all user inputs
- Enable database logging and monitoring for suspicious SQL queries
🔍 How to Verify
Check if Vulnerable:
Check if CRMEB version is <=1.3.4 and test /api/admin/user/list endpoint with SQL injection payloadsCheck Version:
Check application configuration files or database version tables for CRMEB versionVerify Fix Applied:
Verify version is >1.3.4 and test that SQL injection payloads no longer work on the endpoint📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by API access
- Requests to /api/admin/user/list with unusual parameters
Network Indicators:
- SQL keywords in HTTP requests to admin endpoints
- Unusual database connection patterns from application server
SIEM Query:
source="web_logs" AND uri="/api/admin/user/list" AND (query="SELECT" OR query="UNION" OR query="OR 1=1")