CVE-2024-7279: Lot Reservation Management System SQLi Flaw

CVE-2024-7279 Overview

A critical SQL Injection vulnerability has been identified in SourceCodester Lot Reservation Management System version 1.0. This vulnerability exists in the login functionality at /admin/ajax.php?action=login, where improper handling of the username parameter allows attackers to inject malicious SQL queries. The flaw enables remote attackers to bypass authentication, extract sensitive data, or manipulate the underlying database without requiring any prior authentication.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to bypass authentication mechanisms, extract sensitive user credentials, and potentially gain full administrative access to the Lot Reservation Management System.

Affected Products

• SourceCodester Lot Reservation Management System 1.0
• oretnom23 lot_reservation_management_system

Discovery Timeline

• 2024-07-31 - CVE-2024-7279 published to NVD
• 2024-08-08 - Last updated in NVD database

Technical Details for CVE-2024-7279

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) affects the authentication endpoint of the Lot Reservation Management System. The vulnerable component is located at /admin/ajax.php?action=login, which processes user login requests. When users submit their credentials, the username parameter is incorporated directly into SQL queries without proper sanitization or parameterized query implementation.

The lack of input validation allows attackers to craft malicious input that alters the intended SQL query logic. This can result in authentication bypass, unauthorized data access, or database manipulation. The vulnerability is particularly severe because it targets the authentication mechanism, which serves as the primary security gateway for administrative functions.

Root Cause

The root cause of CVE-2024-7279 is insufficient input validation and the absence of parameterized queries in the login functionality. The application directly concatenates user-supplied input from the username parameter into SQL statements, creating a classic SQL Injection attack surface. This violates secure coding practices that mandate treating all user input as untrusted and using prepared statements for database interactions.

Attack Vector

The vulnerability can be exploited remotely over the network without requiring any authentication or user interaction. An attacker can target the /admin/ajax.php?action=login endpoint by submitting specially crafted SQL syntax in the username field.

A typical exploitation scenario involves injecting SQL operators such as ' OR '1'='1 or using UNION-based techniques to extract data from the database. The attacker sends a malicious HTTP POST request to the login endpoint, where the injected payload manipulates the authentication query to return a true condition, effectively bypassing password verification. More sophisticated attacks can leverage techniques like time-based blind SQL injection or error-based extraction to enumerate database contents, including user credentials and sensitive application data. A proof-of-concept has been publicly disclosed via GitHub Gist.

Detection Methods for CVE-2024-7279

Indicators of Compromise

• HTTP POST requests to /admin/ajax.php?action=login containing SQL metacharacters such as single quotes ('), double dashes (--), or semicolons (;) in the username parameter
• Multiple rapid authentication attempts from the same source IP with varying SQL syntax patterns
• Database error messages exposed in HTTP responses indicating SQL syntax errors
• Unusual database query patterns or unexpected data extraction in database logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL Injection patterns in HTTP parameters targeting the /admin/ajax.php endpoint
• Implement application-layer monitoring to flag requests containing common SQL Injection payloads such as UNION SELECT, OR 1=1, and ORDER BY clauses
• Configure database audit logging to capture anomalous query execution patterns that may indicate exploitation attempts
• Utilize intrusion detection signatures that specifically monitor for CWE-89 SQL Injection attack patterns

Monitoring Recommendations

• Enable detailed access logging on web servers to capture full request parameters for forensic analysis
• Monitor database server logs for failed queries, unexpected table access, or privilege escalation attempts
• Set up alerting for authentication anomalies such as successful logins from unexpected IP addresses following failed SQL-laden attempts
• Implement real-time correlation of web application logs with database activity logs to identify exploitation chains

How to Mitigate CVE-2024-7279

Immediate Actions Required

• Restrict network access to the /admin/ajax.php endpoint using IP whitelisting or VPN requirements
• Deploy a Web Application Firewall with SQL Injection protection rules enabled for the affected application
• Consider taking the Lot Reservation Management System offline until a patch is applied if it contains sensitive data
• Review access logs for signs of prior exploitation and investigate any suspicious authentication attempts

Patch Information

No official patch has been released by the vendor (oretnom23/SourceCodester) at the time of publication. Organizations using the Lot Reservation Management System 1.0 should monitor the VulDB entry for updates. Given the nature of SourceCodester projects, users may need to implement manual code fixes or consider alternative solutions.

Workarounds

• Implement parameterized queries (prepared statements) in the ajax.php file to properly handle the username parameter input
• Add input validation to reject any username containing SQL metacharacters before processing
• Deploy a reverse proxy with ModSecurity or similar WAF capabilities to filter malicious requests at the network perimeter
• Implement rate limiting on the login endpoint to slow down automated exploitation attempts

The recommended approach for securing the vulnerable code involves modifying the login handler to use PHP's PDO or MySQLi prepared statements. For example, replacing direct variable interpolation with parameter binding ensures that user input is treated as data rather than executable SQL code.