CVE-2025-4332: PHPGurukul Visitor Management SQL Injection

CVE-2025-4332 Overview

A SQL injection vulnerability has been identified in PHPGurukul Company Visitor Management System version 2.0. This vulnerability exists in the /visitor-detail.php file, where the editid and remark parameters are susceptible to SQL injection attacks due to improper input sanitization. The vulnerability can be exploited remotely without authentication, allowing attackers to manipulate database queries and potentially access, modify, or delete sensitive visitor management data.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to execute arbitrary SQL commands, potentially compromising the entire visitor management database including visitor records, credentials, and sensitive organizational data.

Affected Products

• PHPGurukul Company Visitor Management System 2.0

Discovery Timeline

• 2025-05-06 - CVE-2025-4332 published to NVD
• 2025-09-30 - Last updated in NVD database

Technical Details for CVE-2025-4332

Vulnerability Analysis

This vulnerability is classified as SQL Injection (CWE-89) with an underlying Injection flaw (CWE-74). The affected component is the /visitor-detail.php file within the PHPGurukul Company Visitor Management System. The vulnerability stems from the application's failure to properly sanitize user-supplied input in the editid and remark parameters before incorporating them into SQL queries.

The attack is network-accessible, meaning any remote attacker with access to the vulnerable application can attempt exploitation. No authentication or special privileges are required to trigger the vulnerability, significantly lowering the barrier to exploitation. The exploit has been publicly disclosed, increasing the risk of widespread attacks against unpatched installations.

Root Cause

The root cause of this vulnerability is improper input validation and the absence of parameterized queries or prepared statements in the /visitor-detail.php file. When user input from the editid or remark parameters is directly concatenated into SQL query strings without proper sanitization or escaping, it allows attackers to inject malicious SQL code that will be executed by the database engine.

Attack Vector

The attack can be launched remotely over the network by sending specially crafted HTTP requests to the /visitor-detail.php endpoint. An attacker would manipulate the editid or remark GET/POST parameters to include SQL injection payloads. Common attack techniques include:

• Union-based SQL injection to extract data from other database tables
• Boolean-based blind SQL injection to infer database contents
• Time-based blind SQL injection when direct output is not visible
• Stacked queries to execute multiple SQL statements including INSERT, UPDATE, or DELETE operations

The vulnerability allows potential read and write access to the underlying database, enabling data exfiltration, data modification, and in some configurations, potential command execution on the database server.

Detection Methods for CVE-2025-4332

Indicators of Compromise

• Unusual SQL error messages in web server logs referencing /visitor-detail.php
• HTTP requests to /visitor-detail.php containing suspicious characters such as single quotes, double dashes, UNION, SELECT, OR 1=1 patterns
• Unexpected database query execution patterns or slow query logs showing injection attempts
• Anomalous access patterns to visitor management data or unauthorized data exports

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the editid and remark parameters
• Deploy database activity monitoring to identify unusual query patterns or unauthorized data access
• Configure application-level logging to capture all requests to /visitor-detail.php with parameter values
• Utilize intrusion detection systems with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable verbose logging on the web server for requests to /visitor-detail.php
• Monitor database query logs for syntax errors or injection patterns
• Set up alerts for multiple failed authentication attempts or data extraction activities
• Implement real-time monitoring of outbound data transfers from the database server

How to Mitigate CVE-2025-4332

Immediate Actions Required

• Restrict network access to the PHPGurukul Company Visitor Management System to trusted IP addresses only
• Implement a Web Application Firewall (WAF) to filter malicious requests targeting /visitor-detail.php
• Review and audit database access logs for any signs of previous exploitation
• Consider temporarily disabling the /visitor-detail.php functionality until a patch is applied

Patch Information

As of the last modification date (2025-09-30), no official vendor patch information is available in the CVE data. Organizations should monitor the PHPGurukul Homepage and the VulDB advisory for updates. Additional vulnerability details are available in the GitHub Issue Tracker.

Workarounds

• Implement input validation to whitelist only numeric values for the editid parameter
• Apply output encoding and parameterized queries (prepared statements) in the source code
• Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
• Limit database user privileges to restrict the scope of potential exploitation

# Example WAF rule for ModSecurity to block SQL injection attempts
SecRule ARGS:editid|ARGS:remark "@rx (\b(union|select|insert|update|delete|drop|exec|execute)\b|'|--|;)" \
    "id:100001,phase:2,deny,status:403,msg:'SQL Injection attempt detected on visitor-detail.php'"