CVE-2024-37831
📋 TL;DR
CVE-2024-37831 is a critical SQL injection vulnerability in Itsourcecode Payroll Management System 1.0 that allows attackers to execute arbitrary SQL commands through the ID parameter in payroll_items.php. This can lead to complete database compromise, including data theft, modification, or deletion. Organizations using this specific version of the payroll system are affected.
💻 Affected Systems
- Itsourcecode Payroll Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise leading to complete data loss, credential theft, privilege escalation to system-level access, and potential ransomware deployment across the network.
Likely Case
Database exfiltration of sensitive payroll data including employee PII, salary information, and authentication credentials, followed by lateral movement within the network.
If Mitigated
Limited data exposure if proper input validation and parameterized queries are implemented, with database permissions restricted to prevent system-level access.
🎯 Exploit Status
Simple SQL injection via GET parameter. Exploit code is publicly available in GitHub issues.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Implement workarounds immediately.
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd input validation to payroll_items.php to sanitize the ID parameter
Edit payroll_items.php and add: $id = intval($_GET['id']); before SQL query
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns
Add WAF rule: SecRule ARGS:id "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Isolate the payroll system in a separate network segment with strict firewall rules
- Implement database-level protections: restrict user permissions, enable auditing, and encrypt sensitive data
🔍 How to Verify
Check if Vulnerable:
Test payroll_items.php?id=1' OR '1'='1 and observe if SQL error or unexpected behavior occursCheck Version:
Check system documentation or admin panel for version informationVerify Fix Applied:
Test with same payload after implementing fixes - should return error or no data📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database queries from web application user
- Multiple failed login attempts following SQL errors
Network Indicators:
- HTTP requests with SQL keywords in ID parameter
- Unusual outbound database connections from web server
SIEM Query:
source="web_logs" AND ("sql syntax" OR "union select" OR "' OR '1'='1") AND uri="*payroll_items.php*"