CVE-2019-25492: Homey BNB V4 SQL Injection Vulnerability

CVE-2019-25492 Overview

Homey BNB V4 contains a critical SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting malicious SQL code through the pt parameter. This vulnerability affects the admin/getcmsdata.php endpoint, enabling attackers to send specially crafted GET requests with malicious pt values to extract sensitive database information without any authentication.

Critical Impact

Unauthenticated remote attackers can exploit this SQL injection vulnerability to access, modify, or exfiltrate sensitive database contents including user credentials, personal information, and booking data stored in the Homey BNB rental management system.

Affected Products

• Homey BNB V4 (Airbnb Clone Script)

Discovery Timeline

• 2026-02-27 - CVE CVE-2019-25492 published to NVD
• 2026-03-02 - Last updated in NVD database

Technical Details for CVE-2019-25492

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) exists in the Homey BNB V4 web application, specifically within the admin/getcmsdata.php endpoint. The application fails to properly sanitize user-supplied input from the pt GET parameter before incorporating it into SQL queries. This classic injection vulnerability allows attackers to break out of the intended query structure and execute arbitrary SQL commands against the underlying database.

The vulnerability is particularly dangerous because it requires no authentication to exploit. An attacker can simply send malformed GET requests to the vulnerable endpoint, making this an ideal target for automated scanning tools and opportunistic attacks. The network-accessible nature of the vulnerability combined with the lack of authentication requirements significantly increases the attack surface.

Root Cause

The root cause of CVE-2019-25492 is improper input validation and the absence of parameterized queries in the admin/getcmsdata.php file. The pt parameter is directly concatenated into SQL query strings without proper sanitization, escaping, or use of prepared statements. This allows user-controlled input to be interpreted as SQL commands rather than data, enabling attackers to manipulate query logic.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no user interaction or authentication. An attacker can craft malicious HTTP GET requests targeting the /admin/getcmsdata.php endpoint with SQL injection payloads in the pt parameter.

The vulnerability can be exploited using standard SQL injection techniques. Attackers typically begin with reconnaissance using payloads that trigger detectable responses, such as time-based blind injection or error-based injection. Once confirmed, they can escalate to data extraction using UNION-based injection or stacked queries depending on the database configuration.

For detailed exploitation information, refer to the Exploit-DB #46616 entry and the VulnCheck SQL Injection Advisory.

Detection Methods for CVE-2019-25492

Indicators of Compromise

• Unusual GET requests to /admin/getcmsdata.php containing SQL syntax such as UNION, SELECT, OR 1=1, or comment sequences (--, /**/)
• Web server logs showing repeated requests to getcmsdata.php with varying pt parameter values
• Database query logs containing unexpected SQL statements or errors indicating injection attempts
• Unexplained database access or data exfiltration patterns

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the pt parameter
• Implement log monitoring for suspicious requests containing SQL keywords targeting the admin/getcmsdata.php endpoint
• Configure database auditing to detect anomalous query patterns or unauthorized data access
• Use intrusion detection systems (IDS) with SQL injection signature rules

Monitoring Recommendations

• Enable verbose logging on the web server to capture full request URLs and parameters
• Set up alerts for multiple failed or unusual requests to administrative endpoints
• Monitor database performance metrics for unusual query execution times that may indicate time-based blind SQL injection attempts
• Review access logs regularly for requests originating from known malicious IP ranges or TOR exit nodes

How to Mitigate CVE-2019-25492

Immediate Actions Required

• Restrict access to the /admin/getcmsdata.php endpoint by implementing IP-based access controls or authentication requirements
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Consider temporarily disabling the vulnerable endpoint if it is not business-critical
• Review web server and database logs for evidence of prior exploitation attempts

Patch Information

No vendor patch information is currently available in the CVE data. Organizations using Homey BNB V4 should contact DoD IT Solutions for security updates and patching guidance. In the absence of an official patch, implementing the workarounds below is critical for protecting systems.

Workarounds

• Implement input validation on the pt parameter to allow only expected values (whitelist approach)
• Modify the application code to use parameterized queries or prepared statements for all database interactions
• Restrict network access to the vulnerable endpoint using firewall rules or .htaccess configurations
• Consider implementing a reverse proxy with SQL injection filtering capabilities in front of the application

# Example .htaccess configuration to restrict access to vulnerable endpoint
<Files "getcmsdata.php">
    Order Deny,Allow
    Deny from all
    # Allow only trusted IP addresses
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Files>