CVE-2024-5135: Phpgurukul Directory Management SQLI Flaw

CVE-2024-5135 Overview

A critical SQL injection vulnerability has been identified in PHPGurukul Directory Management System version 1.0. This vulnerability exists in the administrative login functionality at /admin/index.php, where improper sanitization of the username parameter allows attackers to inject malicious SQL queries. The vulnerability can be exploited remotely without authentication, potentially enabling unauthorized access to the application's backend database and administrative functions.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data from the database, modify or delete records, and potentially gain full administrative control of the Directory Management System.

Affected Products

• PHPGurukul Directory Management System 1.0

Discovery Timeline

• 2024-05-20 - CVE-2024-5135 published to NVD
• 2025-02-21 - Last updated in NVD database

Technical Details for CVE-2024-5135

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the authentication mechanism of the PHPGurukul Directory Management System. The application fails to properly validate and sanitize user-supplied input in the username parameter before incorporating it into SQL queries. This lack of input validation allows attackers to manipulate the query logic, potentially bypassing authentication controls or extracting sensitive information from the underlying database.

The vulnerability is particularly dangerous because it exists in the administrative login page (/admin/index.php), which is typically the first line of defense for protecting administrative functionality. An attacker successfully exploiting this vulnerability could gain unauthorized access to administrative functions without possessing valid credentials.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries in the authentication mechanism. The application directly concatenates user-supplied input from the username field into SQL queries without proper sanitization or the use of prepared statements. This allows specially crafted input to alter the intended SQL query structure, enabling SQL injection attacks.

Attack Vector

The attack can be initiated remotely over the network without requiring any prior authentication or user interaction. An attacker targets the /admin/index.php endpoint and submits a malicious payload in the username parameter. The crafted SQL injection payload manipulates the authentication query to return a valid result regardless of whether the attacker possesses legitimate credentials.

The vulnerability has been publicly disclosed with exploit details available in the GitHub SQL Injection Example repository. This public availability increases the risk of exploitation as threat actors can easily reproduce the attack.

Detection Methods for CVE-2024-5135

Indicators of Compromise

• Unusual or malformed login attempts to /admin/index.php containing SQL metacharacters such as single quotes, double dashes, or UNION keywords in the username field
• Web server logs showing repeated failed or unusual authentication requests to the admin login page
• Database query logs containing unexpected SQL syntax or error messages related to authentication queries
• Evidence of unauthorized administrative access or data modifications within the Directory Management System

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP POST requests to /admin/index.php
• Monitor application logs for authentication anomalies including failed login attempts with suspicious username patterns
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable database query logging and monitor for anomalous query structures or SQL errors

Monitoring Recommendations

• Configure real-time alerting for SQL injection attempt patterns in web server access logs
• Implement database activity monitoring to detect unauthorized data access or extraction attempts
• Establish baseline authentication patterns and alert on deviations that may indicate exploitation attempts
• Regularly review administrative access logs for signs of unauthorized entry

How to Mitigate CVE-2024-5135

Immediate Actions Required

• Restrict access to the /admin/index.php endpoint using IP-based access controls to limit exposure
• Implement a Web Application Firewall (WAF) with SQL injection detection rules to filter malicious requests
• Consider temporarily disabling the administrative login page until a proper fix is applied
• Review application logs for evidence of prior exploitation attempts

Patch Information

No official vendor patch has been identified for this vulnerability at the time of publication. Organizations using PHPGurukul Directory Management System 1.0 should contact the vendor for remediation guidance or consider implementing the workarounds listed below. For additional technical details, refer to VulDB #265211.

Workarounds

• Implement parameterized queries or prepared statements in the authentication code to prevent SQL injection
• Deploy input validation to reject or sanitize special characters in the username field before processing
• Use a Web Application Firewall (WAF) to filter known SQL injection attack patterns at the network perimeter
• Restrict administrative interface access to trusted IP addresses or VPN connections only
• Consider replacing the vulnerable application with a more secure directory management solution

# Example: Restrict admin access via .htaccess
# Add to /admin/.htaccess file
<Files "index.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Files>