CVE-2024-5063: PHPGurukul Course Registration SQLI Flaw

CVE-2024-5063 Overview

A critical SQL injection vulnerability has been identified in PHPGurukul Online Course Registration System version 3.1. The vulnerability exists in the /admin/index.php file where improper handling of the username and password parameters allows attackers to inject malicious SQL queries. This flaw enables authentication bypass and potentially unauthorized access to the administrative panel of the affected web application.

Critical Impact

This SQL injection vulnerability allows remote, unauthenticated attackers to bypass authentication mechanisms and gain unauthorized administrative access to the Online Course Registration System, potentially compromising all stored data and system functionality.

Affected Products

• PHPGurukul Online Course Registration System 3.1
• Web applications using vulnerable /admin/index.php authentication
• Systems deployed without input validation on login parameters

Discovery Timeline

• 2024-05-17 - CVE-2024-5063 published to NVD
• 2025-03-03 - Last updated in NVD database

Technical Details for CVE-2024-5063

Vulnerability Analysis

This vulnerability stems from improper input validation in the administrative login functionality. The /admin/index.php file processes user-supplied input from the username and password fields without adequate sanitization or parameterized queries. When a user submits login credentials, the application directly concatenates these values into SQL queries, creating a classic SQL injection attack surface.

The vulnerability allows attackers to manipulate the authentication logic by injecting SQL syntax that alters the intended query behavior. This can result in complete authentication bypass, allowing unauthorized users to gain administrative privileges without knowing valid credentials.

Root Cause

The root cause is the use of unsanitized user input directly in SQL queries within the authentication mechanism. The application fails to implement prepared statements or parameterized queries, which are standard defenses against SQL injection attacks. Additionally, there is no input validation or escaping applied to the username and password parameters before they are processed by the database query.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker simply needs to access the administrative login page at /admin/index.php and submit specially crafted input in the username or password fields. By injecting SQL metacharacters and logic-altering syntax (such as ' OR '1'='1), attackers can manipulate the underlying SQL query to return true for authentication checks, effectively bypassing the login mechanism entirely.

The vulnerability is particularly dangerous because:

• It requires no prior authentication
• It can be exploited remotely via the network
• Public proof-of-concept code has been disclosed, lowering the barrier to exploitation
• Successful exploitation grants full administrative access to the system

For detailed technical information regarding the exploitation mechanism, refer to the GitHub PoC documentation and VulDB advisory #264922.

Detection Methods for CVE-2024-5063

Indicators of Compromise

• Unusual login attempts containing SQL metacharacters (single quotes, double dashes, semicolons) in authentication logs
• Multiple failed login attempts followed by successful administrative access from the same IP
• Web server access logs showing requests to /admin/index.php with URL-encoded SQL syntax
• Database query logs containing malformed or unexpected SQL statements in authentication contexts

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in POST parameters
• Monitor authentication logs for login attempts containing special characters like ', --, ;, OR, and AND
• Deploy intrusion detection systems (IDS) with signatures for SQL injection attack patterns
• Enable database query logging and alert on queries with unexpected syntax or multiple statement execution

Monitoring Recommendations

• Enable verbose logging on the web server for all requests to /admin/index.php
• Configure real-time alerting for authentication anomalies, including rapid successive login attempts
• Implement database activity monitoring to detect unusual query patterns or data access
• Review access logs regularly for requests originating from suspicious IP addresses or geographic locations

How to Mitigate CVE-2024-5063

Immediate Actions Required

• Restrict access to the /admin/index.php page using IP whitelisting or VPN-only access
• Implement a Web Application Firewall (WAF) with SQL injection protection enabled
• Consider taking the administrative interface offline until patches can be applied
• Review access logs for any signs of prior exploitation attempts

Patch Information

No official vendor patch has been identified for this vulnerability at the time of this writing. Users should monitor PHPGurukul's official channels for security updates. In the absence of an official fix, organizations should implement the code-level mitigations described below or consider migrating to alternative, actively maintained course registration software.

Workarounds

• Modify the source code in /admin/index.php to use prepared statements with parameterized queries for all database operations
• Implement input validation to reject any input containing SQL metacharacters in the username and password fields
• Add a CAPTCHA mechanism to the login page to prevent automated exploitation attempts
• Deploy the application behind a reverse proxy with SQL injection filtering capabilities

# Example: Restrict admin access via .htaccess
# Place this file in the /admin/ directory
<Files "index.php">
    Order Deny,Allow
    Deny from all
    # Allow only trusted IP addresses
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Files>