CVE-2025-4457: Car Rental Project SQL Injection Flaw

CVE-2025-4457 Overview

A SQL injection vulnerability has been identified in Project Worlds Car Rental Project version 1.0. This vulnerability affects the /admin/approve.php file, where improper handling of the ID parameter allows attackers to inject malicious SQL commands. The attack can be executed remotely without authentication, potentially allowing unauthorized database access, data manipulation, or complete system compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data, modify database contents, or potentially achieve command execution on the underlying system.

Affected Products

• Project Worlds Car Rental Project version 1.0
• Administrative approval functionality (/admin/approve.php)
• All deployments with exposed admin interfaces

Discovery Timeline

• 2025-05-09 - CVE-2025-4457 published to NVD
• 2025-07-11 - Last updated in NVD database

Technical Details for CVE-2025-4457

Vulnerability Analysis

This vulnerability is a classic SQL injection flaw (CWE-89) stemming from improper neutralization of special elements used in SQL commands. The /admin/approve.php endpoint accepts an ID parameter that is directly incorporated into SQL queries without adequate sanitization or parameterization. This allows attackers to craft malicious input that alters the intended SQL logic, enabling unauthorized database operations.

The vulnerability is network-accessible and requires no authentication or user interaction to exploit. An attacker can manipulate the ID parameter to inject arbitrary SQL statements, potentially leading to unauthorized data access, data modification, or denial of service. The public disclosure of exploit details increases the risk of active exploitation.

Root Cause

The root cause is the absence of proper input validation and parameterized queries in the approval functionality. The application directly concatenates user-supplied input (the ID parameter) into SQL statements, creating a direct injection vector. This represents a violation of secure coding practices as defined by OWASP guidelines for preventing injection attacks.

Attack Vector

The attack is executed remotely via HTTP requests to the vulnerable endpoint. An attacker crafts a malicious request to /admin/approve.php with a specially formatted ID parameter containing SQL syntax. The injected SQL code is then executed by the database engine with the privileges of the application's database user.

Typical exploitation scenarios include:

• Using UNION-based injection to extract data from other database tables
• Employing blind SQL injection techniques to enumerate database structure
• Leveraging time-based injection to confirm vulnerability and extract data
• Potential command execution via database-specific functions (e.g., xp_cmdshell on SQL Server, INTO OUTFILE on MySQL)

For detailed technical analysis and proof-of-concept information, refer to the GitHub Issue on myCVE and the VulDB Entry #308071.

Detection Methods for CVE-2025-4457

Indicators of Compromise

• Unusual database queries containing SQL keywords (UNION, SELECT, DROP, INSERT) in web access logs
• Requests to /admin/approve.php with suspicious ID parameter values containing special characters (', ", ;, --)
• Database error messages appearing in HTTP responses
• Unexpected database modifications or data exfiltration patterns

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block SQL injection patterns in the ID parameter
• Enable detailed logging for all requests to administrative endpoints, particularly /admin/approve.php
• Configure database auditing to detect anomalous query patterns or unauthorized data access
• Deploy intrusion detection systems (IDS) with SQL injection signature rules

Monitoring Recommendations

• Monitor web server access logs for requests to /admin/approve.php with encoded or malformed ID values
• Set up alerts for database errors or exceptions originating from the affected application
• Track failed and successful authentication attempts to the admin panel
• Implement anomaly detection for unusual database query volumes or response times

How to Mitigate CVE-2025-4457

Immediate Actions Required

• Restrict network access to the /admin/approve.php endpoint using firewall rules or access control lists
• Implement a web application firewall (WAF) with SQL injection protection enabled
• Consider temporarily disabling the approval functionality until a proper fix is applied
• Review database user permissions and apply the principle of least privilege

Patch Information

No official vendor patch has been released for Project Worlds Car Rental Project version 1.0 at this time. Organizations using this software should implement the workarounds below and monitor for updates from the project maintainers. For additional context, review the VulDB submission details.

Workarounds

• Implement input validation to ensure the ID parameter only accepts numeric values
• Apply parameterized queries or prepared statements in the /admin/approve.php file to prevent SQL injection
• Deploy a WAF rule to sanitize or block requests with SQL injection patterns targeting the ID parameter
• Restrict access to administrative endpoints to trusted IP addresses only

# Example: Block access to admin approve.php except from trusted IPs (Apache)
<Location /admin/approve.php>
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
</Location>

# Example: Nginx restriction
location /admin/approve.php {
    allow 192.168.1.0/24;
    allow 10.0.0.0/8;
    deny all;
}