CVE-2024-10737: Exam Hall Seating System SQLi Vulnerability

CVE-2024-10737 Overview

A critical SQL injection vulnerability has been identified in Codezips Free Exam Hall Seating Management System version 1.0. The vulnerability exists in the /teacher.php file, where the email parameter is not properly sanitized, allowing attackers to inject malicious SQL queries. This flaw enables remote attackers to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data from the database, modify or delete records, and potentially gain further access to the underlying system.

Affected Products

• Codezips Free Exam Hall Seating Management System version 1.0
• Web applications using the vulnerable /teacher.php endpoint
• Systems where the email parameter is processed without proper input validation

Discovery Timeline

• 2024-11-03 - CVE-2024-10737 published to NVD
• 2024-11-05 - Last updated in NVD database

Technical Details for CVE-2024-10737

Vulnerability Analysis

This SQL injection vulnerability stems from improper handling of user-supplied input in the /teacher.php file. When an attacker provides a specially crafted value in the email parameter, the application fails to properly sanitize or parameterize the input before incorporating it into SQL queries. This allows arbitrary SQL commands to be executed against the backend database.

The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), which represents one of the most common and dangerous web application security flaws. The attack can be launched remotely over the network without requiring any authentication or user interaction, making it particularly concerning for publicly accessible installations.

Root Cause

The root cause of this vulnerability is the direct concatenation of user-controlled input (the email parameter) into SQL queries without proper sanitization, escaping, or the use of parameterized queries. The application fails to implement prepared statements or input validation, allowing attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack vector involves sending a malicious HTTP request to the /teacher.php endpoint with a crafted email parameter containing SQL injection payloads. Since the vulnerability is network-accessible and requires no authentication, an attacker can exploit it remotely by simply crafting a request with malicious SQL syntax in the email field.

The vulnerability allows for various SQL injection techniques including:

• Union-based injection to extract data from other tables
• Boolean-based blind injection to infer database contents
• Time-based blind injection using database delay functions
• Error-based injection to reveal database structure information

For technical details and proof-of-concept information, refer to the GitHub Issue for CVE and VulDB #282906.

Detection Methods for CVE-2024-10737

Indicators of Compromise

• Unusual or malformed requests to /teacher.php containing SQL syntax in the email parameter
• Database error messages exposed in HTTP responses indicating SQL syntax errors
• Unexpected database queries with UNION, SELECT, or other SQL keywords in application logs
• Anomalous database access patterns or bulk data extraction attempts

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the email parameter
• Monitor web server access logs for requests to /teacher.php containing suspicious characters such as single quotes, semicolons, or SQL keywords
• Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
• Use intrusion detection systems with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for the /teacher.php endpoint and review logs for anomalous input patterns
• Configure alerts for database errors that may indicate injection attempts
• Monitor for unusual authentication patterns that could indicate successful exploitation
• Implement real-time alerting for any access to sensitive database tables through unexpected query patterns

How to Mitigate CVE-2024-10737

Immediate Actions Required

• Restrict network access to the vulnerable /teacher.php endpoint until a patch is applied
• Implement input validation on the email parameter to only accept properly formatted email addresses
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules in front of the application
• Review database user privileges and ensure the application uses least-privilege access
• Consider taking the application offline if it contains sensitive data and no immediate fix is available

Patch Information

At the time of publication, no official patch has been released by the vendor. Organizations using Codezips Free Exam Hall Seating Management System should monitor the vendor's website and the VulDB entry for updates regarding security fixes. In the absence of an official patch, implementing the workarounds below is strongly recommended.

Workarounds

• Implement server-side input validation to reject email parameters containing SQL metacharacters
• Modify the application code to use parameterized queries or prepared statements for all database interactions
• Deploy a WAF configured to block SQL injection attempts targeting the vulnerable endpoint
• Restrict access to the /teacher.php file through web server configuration or network-level controls
• Consider disabling the teacher functionality entirely until proper fixes can be implemented

# Example Apache configuration to restrict access to vulnerable endpoint
<Location /teacher.php>
    Order Deny,Allow
    Deny from all
    # Allow only from trusted internal networks
    Allow from 192.168.1.0/24
</Location>