CVE-2025-2854
📋 TL;DR
A critical SQL injection vulnerability exists in code-projects Payroll Management System 1.0 through the update_employee.php file's emp_type parameter. This allows remote attackers to execute arbitrary SQL commands on the database. Organizations using this specific payroll system version are affected.
💻 Affected Systems
- code-projects Payroll Management System
📦 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 on the underlying server.
Likely Case
Unauthorized access to sensitive employee payroll data, including salaries, personal information, and financial records, with potential data exfiltration or modification.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-critical data.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily exploitable by attackers with basic SQL injection knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
No official patch available. Consider migrating to a supported alternative or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for all user inputs in update_employee.php
Modify PHP code to use prepared statements: $stmt = $conn->prepare('UPDATE employees SET emp_type = ? WHERE id = ?'); $stmt->bind_param('si', $emp_type, $id); $stmt->execute();
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests
🧯 If You Can't Patch
- Isolate the system on a separate network segment with strict access controls
- Implement database-level restrictions with minimal necessary privileges for the application user
🔍 How to Verify
Check if Vulnerable:
Test the update_employee.php endpoint with SQL injection payloads in the emp_type parameter and observe database errors or unexpected behaviorCheck Version:
Check the system documentation or configuration files for version informationVerify Fix Applied:
After implementing parameterized queries, test with the same SQL injection payloads and verify they are properly sanitized or rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts or unusual database queries from the payroll system
Network Indicators:
- HTTP requests to update_employee.php containing SQL keywords like UNION, SELECT, INSERT, or DROP in parameters
SIEM Query:
source="web_server_logs" AND uri="*update_employee.php*" AND (param="*UNION*" OR param="*SELECT*" OR param="*INSERT*" OR param="*DROP*")