CVE-2023-5045
📋 TL;DR
This SQL injection vulnerability in Biltay Technology Kayisi allows attackers to execute arbitrary SQL commands, potentially leading to command line execution. It affects Kayisi versions before 1286, enabling unauthorized data access, modification, or system compromise.
💻 Affected Systems
- Biltay Technology Kayisi
📦 What is this software?
Kayisi by Biltay
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via command execution, data exfiltration, and complete application control.
Likely Case
Database manipulation, sensitive data theft, and potential lateral movement within the network.
If Mitigated
Limited to database information disclosure if proper input validation and WAF are in place.
🎯 Exploit Status
SQL injection typically has low complexity; command execution via SQL suggests additional vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1286
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-23-0580
Restart Required: Yes
Instructions:
1. Download version 1286 or later from vendor. 2. Backup current installation. 3. Apply update following vendor instructions. 4. Restart application/services.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement strict input validation and parameterized queries in application code.
WAF Deployment
allDeploy a web application firewall with SQL injection rules.
🧯 If You Can't Patch
- Isolate the Kayisi system from internet access and restrict internal network communication.
- Implement network segmentation and monitor for unusual SQL query patterns.
🔍 How to Verify
Check if Vulnerable:
Check Kayisi version via application interface or configuration files; if version < 1286, it's vulnerable.Check Version:
Check application documentation for version command; typically in admin panel or config files.Verify Fix Applied:
Confirm version is 1286 or higher and test SQL injection vectors are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns, error messages containing SQL syntax, unexpected database access logs.
Network Indicators:
- HTTP requests with SQL keywords in parameters, abnormal database connection attempts.
SIEM Query:
Example: search for 'SELECT', 'UNION', 'EXEC' in web server logs with status codes 500 or 200.