CVE-2019-25490: Homey BNB V4 SQL Injection Vulnerability

CVE-2019-25490 Overview

CVE-2019-25490 is a SQL injection vulnerability in Homey BNB V4, an Airbnb clone script. The vulnerability allows unauthenticated attackers to manipulate database queries by injecting SQL code through the id parameter. Attackers can send specially crafted GET requests to the admin/edit.php endpoint with time-based SQL injection payloads to extract sensitive database information, including user credentials, booking data, and other confidential records.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability to extract sensitive database information, potentially leading to data breaches, unauthorized access to user accounts, and complete database compromise.

Affected Products

• Homey BNB V4 (Airbnb Clone Script)

Discovery Timeline

• 2026-02-27 - CVE-2019-25490 published to NVD
• 2026-03-02 - Last updated in NVD database

Technical Details for CVE-2019-25490

Vulnerability Analysis

This vulnerability is classified as CWE-89: Improper Neutralization of Special Elements used in an SQL Command (SQL Injection). The flaw exists in the admin/edit.php endpoint where user-supplied input via the id parameter is directly incorporated into SQL queries without proper sanitization or parameterization. This allows attackers to inject arbitrary SQL syntax that the database interprets as commands rather than data.

The vulnerability is particularly dangerous because it requires no authentication, meaning any remote attacker with network access to the application can exploit it. Time-based blind SQL injection techniques can be used to methodically extract database contents even when the application does not directly display query results.

Root Cause

The root cause of this vulnerability is the failure to properly validate and sanitize user input before incorporating it into SQL queries. The id parameter in the admin/edit.php script is directly concatenated into SQL statements without using prepared statements, parameterized queries, or adequate input filtering. This allows attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack vector is network-based, requiring no user interaction or authentication. An attacker can craft malicious HTTP GET requests to the vulnerable endpoint, inserting SQL injection payloads into the id parameter. The exploitation typically follows this pattern:

1. The attacker sends a GET request to admin/edit.php with a malicious id parameter
2. The application incorporates the unsanitized value directly into a SQL query
3. Time-based blind SQL injection payloads (such as SLEEP() functions) allow the attacker to infer database content based on response timing
4. Through iterative requests, the attacker can extract usernames, passwords, and other sensitive data

For detailed technical information and proof-of-concept details, refer to the Exploit-DB #46616 entry and the VulnCheck Advisory for Homey-BNB.

Detection Methods for CVE-2019-25490

Indicators of Compromise

• Unusual GET requests to admin/edit.php containing SQL syntax characters such as single quotes, semicolons, or SQL keywords like UNION, SELECT, SLEEP
• Multiple sequential requests to the same endpoint with varying id parameter values indicating automated extraction attempts
• HTTP access logs showing requests with time-based SQL injection patterns (e.g., SLEEP(), BENCHMARK(), WAITFOR DELAY)
• Database query logs showing anomalous queries or syntax errors originating from the edit.php script

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the id parameter
• Monitor HTTP access logs for requests containing common SQL injection signatures targeting the admin/edit.php endpoint
• Implement intrusion detection system (IDS) rules to alert on time-based blind SQL injection attack patterns
• Enable database query logging and monitor for suspicious queries originating from the Homey BNB application

Monitoring Recommendations

• Set up real-time alerting for any requests to admin/edit.php containing SQL metacharacters or keywords
• Monitor database server performance for unusual delays that may indicate time-based SQL injection attempts
• Review access logs regularly for patterns consistent with automated SQL injection tools like sqlmap
• Implement rate limiting on the affected endpoint to slow down automated extraction attempts

How to Mitigate CVE-2019-25490

Immediate Actions Required

• If possible, restrict access to the admin/edit.php endpoint using network-level controls (firewall rules, IP allowlisting)
• Deploy a Web Application Firewall with SQL injection protection rules enabled
• Consider taking the application offline if it contains sensitive data and no patch is available
• Review database logs for signs of prior exploitation and assess potential data exposure

Patch Information

No official vendor patch information is currently available for this vulnerability. Organizations using Homey BNB V4 should contact the vendor directly for remediation guidance or consider implementing the code-level fixes described in the workarounds section. For additional context, refer to the DoD IT Solutions Script page.

Workarounds

• Implement prepared statements or parameterized queries in the admin/edit.php script to properly handle user input
• Add server-side input validation to restrict the id parameter to numeric values only
• Deploy a WAF in front of the application with SQL injection detection and blocking capabilities
• Restrict network access to the administrative interface to trusted IP addresses only

# Example: Apache mod_rewrite rule to block suspicious requests to admin/edit.php
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} (union|select|insert|update|delete|drop|;|'|--) [NC]
RewriteRule ^admin/edit\.php - [F,L]