CVE-2023-27205
📋 TL;DR
CVE-2023-27205 is a critical SQL injection vulnerability in Best POS Management System 1.0 that allows attackers to execute arbitrary SQL commands via the month parameter in the sales_report.php endpoint. This affects all installations of Best POS Management System 1.0, potentially compromising the entire database and system. Attackers can steal sensitive data, modify records, or gain unauthorized access to the POS system.
💻 Affected Systems
- Best POS Management System
📦 What is this software?
Best Pos Management System by Best Pos Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to theft of all customer data, financial records, and credentials; potential for remote code execution and full system takeover.
Likely Case
Data exfiltration of sensitive information including customer PII, payment details, and business records; database manipulation affecting business operations.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection; database remains secure with proper access controls.
🎯 Exploit Status
The vulnerability requires no authentication and has publicly available proof-of-concept code, making it trivial for attackers to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch exists. Users should implement parameterized queries and input validation in /kruxton/sales_report.php, specifically sanitizing the month parameter.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation for the month parameter to only accept expected values (1-12 or month names).
Modify sales_report.php to validate month parameter: if(!is_numeric($_GET['month']) || $_GET['month'] < 1 || $_GET['month'] > 12) { die('Invalid month'); }
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
Configure WAF to block SQL injection patterns in request parameters
🧯 If You Can't Patch
- Isolate the system from internet access and restrict network connectivity to only necessary internal services.
- Implement strict network segmentation and monitor all access to the vulnerable endpoint with detailed logging.
🔍 How to Verify
Check if Vulnerable:
Test the /kruxton/sales_report.php endpoint with SQL injection payloads in the month parameter (e.g., month=1' OR '1'='1).Check Version:
Check the software version in the application interface or configuration files; this affects only version 1.0.Verify Fix Applied:
Verify that SQL injection attempts no longer succeed and that the month parameter is properly validated.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts following SQL injection attempts
- Requests to sales_report.php with suspicious month parameters
Network Indicators:
- Unusual database queries from web server
- Traffic patterns indicating SQL injection tools
- Outbound data exfiltration to unknown IPs
SIEM Query:
source="web_logs" AND uri="/kruxton/sales_report.php" AND (param="month" AND value MATCHES "[';]|OR|UNION|SELECT")🔗 References
- https://github.com/xiumulty/CVE/blob/main/best%20pos%20management%20system%20v1.0/sql%20in%20sales_report.php.md
- https://www.sourcecodester.com/php/16127/best-pos-management-system-php.html
- https://github.com/xiumulty/CVE/blob/main/best%20pos%20management%20system%20v1.0/sql%20in%20sales_report.php.md
- https://www.sourcecodester.com/php/16127/best-pos-management-system-php.html
