CVE-2025-3186 Overview
A critical SQL injection vulnerability has been identified in the Projectworlds Online Doctor Appointment Booking System version 1.0. This vulnerability exists in the /patient/invoice.php file where the appid parameter is improperly handled, allowing attackers to manipulate SQL queries. The flaw enables remote attackers to inject malicious SQL commands without authentication, potentially compromising the entire database containing sensitive patient and healthcare appointment data.
Critical Impact
Unauthenticated attackers can remotely exploit this SQL injection vulnerability to access, modify, or delete sensitive patient healthcare records and appointment data stored in the application's MySQL database.
Affected Products
- Projectworlds Online Doctor Appointment Booking System PHP and MySQL version 1.0
Discovery Timeline
- 2025-04-04 - CVE-2025-3186 published to NVD
- 2025-04-15 - Last updated in NVD database
Technical Details for CVE-2025-3186
Vulnerability Analysis
This SQL injection vulnerability stems from the application's failure to properly sanitize user-supplied input in the appid parameter within the /patient/invoice.php endpoint. When a patient accesses their invoice through this endpoint, the application directly incorporates the appid value into SQL queries without adequate validation or parameterization.
The attack can be launched remotely over the network without requiring any authentication or user interaction, making it particularly dangerous for internet-facing deployments. Healthcare management systems like this typically store highly sensitive protected health information (PHI), making them attractive targets for malicious actors seeking to exfiltrate patient data or disrupt medical operations.
Root Cause
The root cause is classified under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output). The vulnerable code in /patient/invoice.php fails to implement prepared statements or parameterized queries when processing the appid parameter. Instead, the application appears to concatenate user input directly into SQL query strings, enabling injection attacks.
Attack Vector
The vulnerability is exploitable via network access with low attack complexity. An unauthenticated remote attacker can craft malicious HTTP requests to the /patient/invoice.php endpoint with a specially crafted appid parameter containing SQL syntax. This allows the attacker to:
- Extract sensitive patient records and personal health information
- Modify appointment data and medical records
- Bypass authentication mechanisms
- Potentially escalate to remote code execution depending on database configuration
- Delete or corrupt database contents
The exploit has been publicly disclosed and may be actively used by threat actors. Technical details are available through the GitHub CVE Issue Discussion and VulDB.
Detection Methods for CVE-2025-3186
Indicators of Compromise
- Unusual SQL error messages in application logs referencing /patient/invoice.php
- Abnormal query patterns in MySQL logs containing UNION SELECT, OR 1=1, or comment sequences
- Multiple rapid requests to /patient/invoice.php with varying appid parameter values
- Database queries with unexpected timing delays (blind SQL injection attempts)
Detection Strategies
- Deploy Web Application Firewall (WAF) rules to detect SQL injection payloads in the appid parameter
- Monitor HTTP access logs for suspicious characters in URL parameters (single quotes, double dashes, semicolons)
- Implement database activity monitoring to detect anomalous query patterns
- Configure intrusion detection systems to alert on SQL injection signatures targeting healthcare applications
Monitoring Recommendations
- Enable detailed logging for all requests to /patient/invoice.php
- Set up real-time alerting for SQL syntax errors generated by the application
- Monitor for data exfiltration indicators such as large database result sets or unusual outbound traffic
- Review MySQL general query logs for injection patterns during incident investigation
How to Mitigate CVE-2025-3186
Immediate Actions Required
- Remove the Online Doctor Appointment Booking System from public internet access immediately
- Implement a Web Application Firewall with SQL injection blocking rules
- Review database logs for evidence of exploitation and potential data breach
- Consider the application compromised if it was internet-accessible; conduct forensic analysis
Patch Information
No vendor patch is currently available for this vulnerability. The Projectworlds Online Doctor Appointment Booking System 1.0 should be considered vulnerable until an official fix is released. Organizations using this software should monitor vendor channels for security updates and consider alternative solutions for healthcare appointment management.
Workarounds
- Place the application behind a reverse proxy with strict input validation
- Implement server-side input sanitization for the appid parameter to allow only numeric values
- Use database account privileges with minimal required permissions to limit exploitation impact
- Deploy network segmentation to isolate the database server from direct application access
# Example: Apache mod_security rule to block SQL injection in appid parameter
# Add to Apache configuration or .htaccess
SecRule ARGS:appid "(?i)(union|select|insert|update|delete|drop|--|\\'|\\;)" \
"id:100001,phase:2,deny,status:403,msg:'SQL Injection attempt blocked in appid'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
