CVE-2025-10843: Fabian Online Hotel System SQLi Flaw

CVE-2025-10843 Overview

A SQL injection vulnerability has been identified in Fabian Online Hotel Reservation System version 1.0. The vulnerability exists in the /reservation/paypalpayout.php file, where the confirm parameter is improperly handled, allowing attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially allowing unauthorized access to the database, data manipulation, or extraction of sensitive information.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially accessing sensitive customer data, reservation records, and payment information stored in the hotel reservation system.

Affected Products

• Fabian Online Hotel Reservation System 1.0

Discovery Timeline

• 2025-09-23 - CVE-2025-10843 published to NVD
• 2025-11-13 - Last updated in NVD database

Technical Details for CVE-2025-10843

Vulnerability Analysis

This SQL injection vulnerability affects the PayPal payout functionality within the hotel reservation system. The vulnerable endpoint /reservation/paypalpayout.php fails to properly sanitize or parameterize the confirm argument before incorporating it into SQL queries. This allows an attacker to inject arbitrary SQL commands that will be executed by the database engine.

SQL injection vulnerabilities of this type are classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The attack can be performed over the network without requiring any authentication or user interaction, making it accessible to any remote attacker who can reach the vulnerable endpoint.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and parameterized queries in the paypalpayout.php file. The confirm parameter is directly concatenated or interpolated into SQL statements without sanitization, allowing special SQL characters and commands to be interpreted by the database engine rather than treated as literal string data.

Attack Vector

The attack vector is network-based, meaning an attacker can exploit this vulnerability remotely. The vulnerable parameter confirm in /reservation/paypalpayout.php can be manipulated through HTTP requests. An attacker could craft malicious input containing SQL syntax to:

• Extract sensitive data from the database (customer information, payment details, reservations)
• Modify or delete database records
• Bypass authentication mechanisms
• Potentially escalate to operating system command execution depending on database configuration

The vulnerability has been publicly disclosed, and exploit details have been published, increasing the risk of active exploitation. For technical details regarding the exploit, refer to the GitHub CVE Issue Discussion.

Detection Methods for CVE-2025-10843

Indicators of Compromise

• Unusual or malformed requests to /reservation/paypalpout.php containing SQL syntax in the confirm parameter
• Database error messages appearing in web server logs or responses
• Unexpected database queries or data access patterns in database audit logs
• Signs of data exfiltration or unauthorized database modifications

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the confirm parameter
• Monitor HTTP access logs for requests to /reservation/paypalpayout.php with suspicious query strings
• Enable database query logging and alert on anomalous query patterns or syntax errors
• Deploy intrusion detection systems (IDS) with SQL injection signature detection

Monitoring Recommendations

• Enable verbose logging on the web server for requests to the reservation application
• Configure database audit logging to track all queries executed against sensitive tables
• Set up alerts for failed authentication attempts or unusual data access patterns
• Regularly review access logs for exploitation attempts targeting the vulnerable endpoint

How to Mitigate CVE-2025-10843

Immediate Actions Required

• Restrict access to /reservation/paypalpayout.php using firewall rules or web server configuration until patched
• Implement a Web Application Firewall (WAF) with SQL injection protection rules
• If possible, take the vulnerable application offline until a fix can be applied
• Review database logs for signs of prior exploitation

Patch Information

No official vendor patch has been identified for this vulnerability at the time of publication. Organizations using Fabian Online Hotel Reservation System 1.0 should contact the vendor for remediation guidance or consider alternative solutions. Monitor the VulDB entry for updates on available patches.

Workarounds

• Implement input validation on the confirm parameter to allow only expected values (e.g., alphanumeric characters)
• Use a Web Application Firewall to filter malicious SQL injection payloads
• Restrict network access to the vulnerable endpoint to trusted IP addresses only
• Consider disabling the PayPal payout functionality until a proper fix is available

# Example: Block access to vulnerable endpoint using Apache .htaccess
<Files "paypalpayout.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>