CVE-2025-4550: Apartment Visitors Management SQLi Flaw

CVE-2025-4550 Overview

A SQL injection vulnerability has been discovered in PHPGurukul Apartment Visitors Management System version 1.0. This vulnerability exists in the /admin/pass-details.php file, where improper handling of the pid parameter allows attackers to inject malicious SQL queries. The vulnerability can be exploited remotely without authentication, potentially compromising database integrity and confidentiality.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially escalate to further system compromise through the admin panel.

Affected Products

• PHPGurukul Apartment Visitors Management System 1.0
• Web applications using the vulnerable /admin/pass-details.php endpoint
• Systems with network-accessible installations of the affected software

Discovery Timeline

• 2025-05-11 - CVE-2025-4550 published to NVD
• 2025-05-16 - Last updated in NVD database

Technical Details for CVE-2025-4550

Vulnerability Analysis

The SQL injection vulnerability in PHPGurukul Apartment Visitors Management System stems from insufficient input validation in the administrative pass details functionality. The pid parameter in /admin/pass-details.php is directly incorporated into SQL queries without proper sanitization or parameterization. This allows attackers to craft malicious input that modifies the intended SQL query structure, enabling unauthorized data access or manipulation.

The vulnerability is network-accessible, meaning remote attackers can exploit it without requiring any prior authentication or user interaction. Given that the affected endpoint resides in the admin directory, successful exploitation could grant attackers access to sensitive visitor management data, administrative credentials, and other confidential information stored in the database.

Root Cause

The root cause of this vulnerability is the failure to implement proper input validation and parameterized queries (prepared statements) when handling the pid parameter. The application directly concatenates user-supplied input into SQL query strings, violating secure coding practices for database interactions. This is classified under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output).

Attack Vector

The attack vector is network-based, requiring an attacker to send specially crafted HTTP requests to the vulnerable /admin/pass-details.php endpoint. By manipulating the pid parameter with SQL metacharacters and injection payloads, attackers can alter query logic to extract data, bypass authentication mechanisms, or perform administrative database operations.

A typical attack scenario involves an attacker appending SQL injection payloads to the pid parameter value, such as UNION-based injection to extract additional database tables or boolean-based blind injection to enumerate database contents character by character. The exploit has been publicly disclosed, increasing the risk of widespread exploitation. Technical details are available in the GitHub Issue Discussion and VulDB #308297.

Detection Methods for CVE-2025-4550

Indicators of Compromise

• Unusual SQL error messages in web server logs referencing /admin/pass-details.php
• HTTP requests to /admin/pass-details.php containing SQL metacharacters such as single quotes, UNION keywords, or comment sequences in the pid parameter
• Unexpected database query patterns or data exfiltration attempts originating from the web application
• Access logs showing repeated requests to the pass-details endpoint with varying parameter values indicative of injection testing

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP parameters
• Implement database activity monitoring to identify anomalous query patterns, especially those containing UNION, SELECT, or comment operators from the web application context
• Enable detailed application logging for the /admin/pass-details.php endpoint to capture and analyze parameter values
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for requests to /admin/pass-details.php with suspicious pid parameter values
• Set up alerts for database errors that may indicate SQL injection attempts
• Review database audit logs for unauthorized SELECT statements or data access patterns
• Implement real-time alerting on WAF rule matches for SQL injection signatures

How to Mitigate CVE-2025-4550

Immediate Actions Required

• Restrict network access to the /admin/ directory to trusted IP addresses only
• Implement Web Application Firewall rules to filter SQL injection payloads targeting the pid parameter
• Consider temporarily disabling the /admin/pass-details.php functionality until a patch is applied
• Review database logs for evidence of prior exploitation attempts

Patch Information

No official vendor patch has been identified in the available CVE data. Organizations should monitor the PHPGurukul website for security updates. In the absence of an official patch, implementing the workarounds and input validation measures described below is strongly recommended. Additional vulnerability details and community discussion can be found in the VulDB CTI #308297 entry.

Workarounds

• Implement server-side input validation to reject pid values containing non-numeric characters
• Deploy a WAF with SQL injection protection rules in front of the application
• Restrict access to the admin panel using IP whitelisting or VPN requirements
• If source code modification is possible, update the vulnerable code to use prepared statements with parameterized queries

# Example: Apache configuration to restrict admin access by IP
<Directory "/var/www/html/admin">
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
</Directory>