CVE-2023-3693
📋 TL;DR
This critical SQL injection vulnerability in SourceCodester Life Insurance Management System 1.0 allows attackers to execute arbitrary SQL commands through the username parameter in login.php. Attackers can potentially bypass authentication, access sensitive data, or take control of the database. Organizations using this specific insurance management system are affected.
💻 Affected Systems
- SourceCodester Life Insurance Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to theft of sensitive insurance data (personal information, policy details, financial records), system takeover, and potential lateral movement to other systems.
Likely Case
Authentication bypass allowing unauthorized access to the insurance management system, data exfiltration of sensitive customer information, and potential manipulation of insurance records.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection, though system remains vulnerable to other attacks.
🎯 Exploit Status
Exploit details are publicly available in GitHub repositories. The vulnerability requires no authentication and can be exploited with basic SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Implement workarounds or replace the system.
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd input validation to sanitize username parameter before processing SQL queries
Modify login.php to use prepared statements with parameterized queries
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns in login requests
Configure WAF to block requests containing SQL keywords in username parameter
🧯 If You Can't Patch
- Isolate the system behind a firewall with strict access controls
- Implement network segmentation to limit database access from the web application
🔍 How to Verify
Check if Vulnerable:
Test login.php with SQL injection payloads in username parameter (e.g., admin' OR '1'='1)Check Version:
Check system documentation or configuration files for version informationVerify Fix Applied:
Verify that SQL injection payloads no longer bypass authentication or return database errors📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts with SQL-like patterns in username field
- Successful logins from unusual IP addresses
Network Indicators:
- HTTP POST requests to login.php containing SQL keywords (UNION, SELECT, etc.) in parameters
- Abnormal database query patterns from web server
SIEM Query:
source="web_logs" AND uri="/login.php" AND (username="*' OR*" OR username="*UNION*" OR username="*SELECT*")🔗 References
- https://github.com/tangyi19/Life-Insurance-Management-System/blob/main/Life%20Insurance%20Management%20System%20login.php%20has%20Sqlinjection.pdf
- https://vuldb.com/?ctiid.234244
- https://vuldb.com/?id.234244
- https://github.com/tangyi19/Life-Insurance-Management-System/blob/main/Life%20Insurance%20Management%20System%20login.php%20has%20Sqlinjection.pdf
- https://vuldb.com/?ctiid.234244
- https://vuldb.com/?id.234244
