CVE-2025-4163: Land Record System SQL Injection Flaw

CVE-2025-4163 Overview

A critical SQL Injection vulnerability has been identified in PHPGurukul Land Record System version 1.0. This vulnerability exists in the /admin/aboutus.php file where the pagetitle parameter is improperly sanitized, allowing attackers to inject malicious SQL commands. The vulnerability can be exploited remotely by authenticated users with low privileges, potentially compromising the integrity and confidentiality of the underlying database. The exploit has been publicly disclosed, and other parameters within the application may also be affected.

Critical Impact

Successful exploitation allows attackers to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion of land record information stored in the system.

Affected Products

• PHPGurukul Land Record System 1.0
• PHP-based web application deployments using the vulnerable component
• Any environment running the affected /admin/aboutus.php endpoint

Discovery Timeline

• May 1, 2025 - CVE-2025-4163 published to NVD
• May 16, 2025 - Last updated in NVD database

Technical Details for CVE-2025-4163

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) stems from improper neutralization of special elements used in SQL commands within the PHPGurukul Land Record System. The vulnerable endpoint /admin/aboutus.php accepts user-supplied input through the pagetitle parameter without adequate input validation or sanitization. When this unsanitized input is concatenated directly into SQL queries, attackers can inject arbitrary SQL statements that the database will execute.

The vulnerability is classified under both CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that the application fails to properly handle injection attacks at multiple levels.

Root Cause

The root cause of this vulnerability is the lack of parameterized queries or prepared statements in the application's database interaction layer. The pagetitle parameter is directly interpolated into SQL queries without proper escaping or validation, violating secure coding practices for database interactions. This is a common vulnerability pattern in PHP applications that use direct string concatenation for building SQL queries rather than using PDO prepared statements or mysqli with bound parameters.

Attack Vector

The attack can be initiated remotely over the network by an authenticated user with low privileges. An attacker would craft a malicious HTTP request to the /admin/aboutus.php endpoint, injecting SQL syntax through the pagetitle parameter. The injected payload could include UNION-based attacks to extract data from other tables, time-based blind SQL injection to enumerate database contents, or stacked queries to modify or delete records.

The vulnerability is accessible through the administrative interface, meaning attackers would need valid administrative credentials or must chain this with an authentication bypass to fully exploit it. However, once authenticated, the low attack complexity allows for straightforward exploitation.

Detection Methods for CVE-2025-4163

Indicators of Compromise

• Unusual or malformed requests to /admin/aboutus.php containing SQL syntax such as ', ", UNION, SELECT, DROP, or --
• Database error messages in web server logs indicating syntax errors or unexpected query results
• Anomalous database query patterns showing unauthorized data access or extraction attempts
• Unexpected changes to the "About Us" content or related database tables

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the pagetitle parameter
• Enable detailed logging on the web server for requests to /admin/aboutus.php and review for suspicious payloads
• Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
• Use intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Configure real-time alerting for HTTP requests containing SQL injection indicators targeting administrative endpoints
• Monitor database logs for queries originating from the web application that contain unexpected SQL clauses
• Implement application-level logging to capture and review all parameter values submitted to vulnerable endpoints
• Establish baseline behavior for database queries and alert on deviations

How to Mitigate CVE-2025-4163

Immediate Actions Required

• Restrict access to the /admin/aboutus.php endpoint to trusted IP addresses only until a patch is available
• Implement Web Application Firewall rules to filter SQL injection payloads in the pagetitle parameter
• Review application logs for evidence of exploitation attempts
• Consider temporarily disabling the affected functionality if not critical to operations

Patch Information

As of the last update on May 16, 2025, no official patch has been released by PHPGurukul for this vulnerability. Organizations should monitor the PHP Gurukul Security Resource for updates. Additional technical details and community discussions are available at the GitHub CVE Issue Tracker and VulDB #306695.

Workarounds

• Implement input validation and sanitization for the pagetitle parameter at the application level
• Use a Web Application Firewall with SQL injection protection rules as an interim mitigation
• Modify the application code to use prepared statements with parameterized queries for all database interactions
• Restrict administrative interface access to internal networks or VPN-only connections

# Example: Apache .htaccess configuration to restrict access to admin directory
<Directory /path/to/land_record_system/admin>
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Directory>