CVE-2024-10702: Simple Car Rental System SQL Injection

CVE-2024-10702 Overview

A critical SQL injection vulnerability has been identified in code-projects Simple Car Rental System 1.0. The vulnerability exists in the /signup.php file, where improper handling of the fname argument allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially compromising the underlying database and sensitive user information.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise.

Affected Products

• Fabian Simple Car Rental System 1.0

Discovery Timeline

• 2024-11-02 - CVE-2024-10702 published to NVD
• 2025-10-23 - Last updated in NVD database

Technical Details for CVE-2024-10702

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) stems from the application's failure to properly sanitize user-supplied input in the signup functionality. When processing form submissions through /signup.php, the application directly incorporates the fname parameter value into SQL queries without adequate input validation or parameterized query usage.

The vulnerability allows network-based attacks without any authentication or user interaction required. An attacker can craft malicious input containing SQL syntax that, when processed by the database engine, executes unintended commands. This could result in unauthorized read access to database contents, modification of existing records, or potentially deletion of data.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands. The fname parameter in the /signup.php endpoint is concatenated directly into SQL statements without proper sanitization, escaping, or the use of prepared statements with parameterized queries. This classic input validation failure allows user-controlled data to be interpreted as SQL code rather than data.

Attack Vector

The attack can be launched remotely over the network against the web application's signup functionality. An attacker submits a crafted HTTP request to /signup.php containing SQL injection payloads in the fname field. The malicious payload is then processed by the backend database, executing the attacker's SQL commands in the context of the application's database connection.

Since no authentication is required and the attack can be performed over the network, this represents an accessible attack surface for malicious actors. The exploit details have been disclosed publicly, as referenced in the GitHub CVE Issue Discussion and documented in VulDB #282870.

Detection Methods for CVE-2024-10702

Indicators of Compromise

• Unusual SQL syntax or escape characters in web server access logs for /signup.php
• Database error messages appearing in application responses indicating malformed queries
• Unexpected database queries or modifications detected in database audit logs
• High volume of requests to /signup.php with varying payload patterns in the fname parameter

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in HTTP POST parameters
• Enable database query logging and monitor for anomalous query structures or error conditions
• Deploy intrusion detection signatures targeting common SQL injection payloads in form submissions
• Review web server logs for suspicious requests containing SQL metacharacters like single quotes, double dashes, or UNION keywords

Monitoring Recommendations

• Configure alerts for database authentication failures or permission denied errors that may indicate attempted privilege escalation
• Monitor for unusual data exfiltration patterns or bulk SELECT queries against sensitive tables
• Establish baseline metrics for /signup.php endpoint usage and alert on anomalies
• Enable verbose logging on the database server to capture full query text for forensic analysis

How to Mitigate CVE-2024-10702

Immediate Actions Required

• Restrict network access to the application if not immediately patchable using firewall rules or access control lists
• Implement input validation on the fname parameter to reject SQL metacharacters and unexpected input patterns
• Deploy a Web Application Firewall with SQL injection protection rules in front of the affected application
• Review database permissions to ensure the application uses a least-privilege account

Patch Information

At the time of this writing, no official vendor patch has been released for Simple Car Rental System 1.0. Organizations using this software should contact the vendor or monitor the Code Projects Resource Hub for security updates. Given the nature of this project, users may need to implement manual code fixes or consider alternative solutions.

Workarounds

• Modify the /signup.php source code to use prepared statements with parameterized queries for all database operations
• Implement server-side input validation to sanitize the fname parameter before database processing
• Deploy a reverse proxy or WAF to filter malicious requests before they reach the application
• Consider temporarily disabling the signup functionality if it is not business-critical until a proper fix can be implemented

# Example: Block suspicious requests at the web server level (Apache)
# Add to .htaccess or Apache configuration
<Location "/signup.php">
    SecRule ARGS:fname "@detectSQLi" "id:1001,deny,status:403,log,msg:'SQL Injection Attempt Blocked'"
</Location>