CVE-2024-37849
📋 TL;DR
A SQL injection vulnerability in itsourcecode Billing System 1.0 allows local attackers to execute arbitrary SQL commands via the username parameter in process.php. This can lead to unauthorized data access, modification, or complete system compromise. Organizations using this specific billing system version are affected.
💻 Affected Systems
- itsourcecode Billing System
📦 What is this software?
Billing System by Itsourcecode
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, data exfiltration, and persistent backdoor installation.
Likely Case
Unauthorized database access leading to sensitive data theft, privilege escalation, and system manipulation.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing exploitation.
🎯 Exploit Status
Exploitation requires local access but SQL injection techniques are well-documented and easy to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
No official patch available. Consider migrating to a supported billing system or implementing custom fixes.
🔧 Temporary Workarounds
Implement Input Validation
allAdd server-side validation to sanitize username parameter inputs
Modify process.php to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE username = ?'); $stmt->bind_param('s', $username);
Web Application Firewall
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block requests containing SQL keywords in username parameter
🧯 If You Can't Patch
- Isolate the billing system on a separate network segment with strict access controls
- Implement database user privilege restrictions to minimize damage from successful exploitation
🔍 How to Verify
Check if Vulnerable:
Test the username parameter in process.php with SQL injection payloads like ' OR '1'='1Check Version:
Check system documentation or configuration files for version informationVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return proper error handling📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts with SQL syntax in username field
Network Indicators:
- HTTP requests to process.php containing SQL keywords in parameters
SIEM Query:
source="web_logs" AND uri="/process.php" AND (username CONTAINS "' OR" OR username CONTAINS "UNION" OR username CONTAINS "SELECT")