CVE-2019-25493: Homey BNB V4 SQL Injection Vulnerability

CVE-2019-25493 Overview

CVE-2019-25493 is an SQL injection vulnerability affecting Homey BNB V4, an Airbnb clone script. The vulnerability allows unauthenticated attackers to manipulate database queries by injecting malicious SQL code through the val parameter in GET requests to the admin/getrecord.php endpoint. This flaw enables attackers to extract sensitive database information without requiring any authentication credentials.

Critical Impact

Unauthenticated attackers can extract sensitive database information including user credentials, booking data, and payment information through SQL injection attacks targeting the administrative endpoint.

Affected Products

• Homey BNB V4

Discovery Timeline

• 2026-02-27 - CVE-2019-25493 published to NVD
• 2026-03-02 - Last updated in NVD database

Technical Details for CVE-2019-25493

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) exists in the Homey BNB V4 application, specifically within the admin/getrecord.php endpoint. The vulnerability stems from improper handling of user-supplied input in the val parameter, which is directly incorporated into SQL queries without adequate sanitization or parameterization.

The attack surface is accessible over the network without requiring any prior authentication, making it particularly dangerous for exposed installations. Successful exploitation allows attackers to read sensitive data from the database and potentially modify database contents. The vulnerability is classified as requiring low attack complexity, meaning it can be exploited with readily available tools and techniques.

Root Cause

The root cause of this vulnerability is classic SQL injection resulting from insufficient input validation and the absence of parameterized queries. The admin/getrecord.php script fails to properly sanitize the val parameter before incorporating it into database queries. This allows attackers to inject arbitrary SQL syntax that is then executed by the database engine with the application's privileges.

The vulnerable endpoint does not implement proper access controls, allowing unauthenticated users to reach the injection point. Combined with the lack of input sanitization, this creates a direct path for attackers to interact with the underlying database.

Attack Vector

The attack vector leverages HTTP GET requests targeting the admin/getrecord.php endpoint with a crafted val parameter containing malicious SQL statements. Attackers can utilize standard SQL injection techniques including:

• Union-based injection to extract data from multiple tables
• Boolean-based blind injection to enumerate database contents
• Time-based blind injection when direct output is not visible
• Error-based injection to gather database schema information

The vulnerability can be exploited remotely without authentication by sending crafted HTTP requests to the vulnerable endpoint. Detailed exploitation techniques are documented in the Exploit-DB entry #46616.

Detection Methods for CVE-2019-25493

Indicators of Compromise

• Unusual GET requests to admin/getrecord.php containing SQL syntax characters in the val parameter
• Web server logs showing requests with encoded SQL keywords such as UNION, SELECT, OR, AND in URL parameters
• Database query logs indicating malformed or suspicious queries originating from the web application
• Unexpected database access patterns or data exfiltration attempts

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block SQL injection patterns in request parameters
• Implement intrusion detection system (IDS) signatures targeting SQL injection attack patterns
• Configure logging to capture all requests to the admin/getrecord.php endpoint for security analysis
• Monitor for automated scanning tools commonly used for SQL injection discovery

Monitoring Recommendations

• Enable verbose logging for all administrative endpoints and regularly audit access patterns
• Set up alerting for requests containing common SQL injection payloads or unusual character sequences
• Monitor database query performance and error rates for anomalies that may indicate injection attempts
• Implement real-time security information and event management (SIEM) correlation rules for SQL injection indicators

How to Mitigate CVE-2019-25493

Immediate Actions Required

• Restrict access to the admin/getrecord.php endpoint using network-level controls or authentication requirements
• Deploy a web application firewall (WAF) with SQL injection protection rules
• Consider taking the affected application offline if it processes sensitive data until a proper fix can be implemented
• Review database permissions to ensure the web application uses a least-privilege database account

Patch Information

No official vendor patch information is available in the CVE data. Organizations should consult the VulnCheck Advisory for Homey-BNB for the latest remediation guidance. Additionally, the DoD IT Solutions Script page may contain updated versions of the software.

Workarounds

• Implement input validation on the val parameter to accept only expected data types and formats
• Use prepared statements or parameterized queries if modifying the source code is possible
• Deploy network segmentation to limit exposure of administrative endpoints to trusted networks only
• Implement rate limiting on the vulnerable endpoint to slow down automated exploitation attempts

# Example .htaccess configuration to restrict access to admin endpoints
<Files "getrecord.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    # Restrict to internal network only
</Files>