CVE-2024-37873
📋 TL;DR
This SQL injection vulnerability in the Itsourcecode Payroll Management System allows remote attackers to execute arbitrary SQL commands through the id parameter in view_payslip.php. Attackers can potentially access, modify, or delete sensitive payroll data. Organizations using this specific PHP payroll system version are affected.
💻 Affected Systems
- Itsourcecode Payroll Management System Project In PHP With Source Code
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, and potential remote code execution via database functions.
Likely Case
Unauthorized access to sensitive payroll information including employee salaries, personal data, and financial records.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to the payroll database only.
🎯 Exploit Status
Simple SQL injection via GET/POST parameter. Public GitHub issues demonstrate the vulnerability. No authentication required for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
1. Review the view_payslip.php file. 2. Implement parameterized queries or prepared statements. 3. Add input validation for the id parameter. 4. Sanitize all user inputs. 5. Test the fix thoroughly.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns in the id parameter
Input Validation Filter
allAdd PHP input validation to restrict id parameter to numeric values only
// In view_payslip.php, add before SQL query:
if (!is_numeric($_GET['id']) || $_GET['id'] <= 0) {
die('Invalid parameter');
}
🧯 If You Can't Patch
- Isolate the payroll system from internet access and restrict to internal network only
- Implement strict network segmentation and monitor all database queries from the application
🔍 How to Verify
Check if Vulnerable:
Test by accessing view_payslip.php?id=1' OR '1'='1 and observing if SQL errors appear or unexpected data is returnedCheck Version:
Check the source code or documentation for version information. Typically found in README files or configuration files.Verify Fix Applied:
Attempt SQL injection tests and verify they are blocked. Check that parameterized queries are implemented in the PHP code.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed parameter validation attempts
- SQL error messages in web server logs
Network Indicators:
- HTTP requests with SQL injection patterns in id parameter
- Unusual database connection patterns from web server
SIEM Query:
web.url:*view_payslip.php* AND (web.param.id:*'* OR web.param.id:*--* OR web.param.id:*/*)