CVE-2025-3330: Online Restaurant Management System SQLi

CVE-2025-3330 Overview

CVE-2025-3330 is a SQL injection vulnerability in Code-Projects Online Restaurant Management System version 1.0. The flaw resides in the /reservation_save.php script, where the first parameter is concatenated into a database query without sanitization. Attackers can exploit this issue remotely without authentication or user interaction. The vendor advisory notes that additional parameters in the same endpoint may also be vulnerable. The exploit details have been publicly disclosed, increasing the risk of opportunistic attacks against exposed deployments.

Critical Impact

Unauthenticated remote attackers can manipulate backend SQL queries through the first parameter in /reservation_save.php, enabling data extraction, modification, or authentication bypass against the reservation database.

Affected Products

• Code-Projects Online Restaurant Management System 1.0
• Component: /reservation_save.php
• CPE: cpe:2.3:a:code-projects:online_restaurant_management_system:1.0:*:*:*:*:*:*:*

Discovery Timeline

• 2025-04-07 - CVE-2025-3330 published to the National Vulnerability Database (NVD)
• 2025-04-07 - Last updated in NVD database

Technical Details for CVE-2025-3330

Vulnerability Analysis

The vulnerability is classified as SQL Injection under [CWE-89] (Improper Neutralization of Special Elements used in an SQL Command) and the broader [CWE-74] (Improper Neutralization of Special Elements in Output). The reservation save handler accepts user-supplied form data and embeds the first parameter directly into a SQL statement. Because the application performs no parameterization or input filtering, an attacker controls part of the query syntax. Successful exploitation allows reading arbitrary records from the database, modifying reservation data, or extracting credentials stored in adjacent tables. The vendor notes that other parameters in the same script may share the same flaw.

Root Cause

The root cause is direct string concatenation of HTTP request parameters into SQL queries inside /reservation_save.php. The application does not use prepared statements or bound parameters. Standard PHP database APIs such as mysqli_prepare or PDO with bound variables are not used for this code path. Input encoding routines such as mysqli_real_escape_string are also absent.

Attack Vector

The attack vector is network-based and requires no authentication. An attacker submits a crafted HTTP POST request to /reservation_save.php with a malicious payload in the first form field. The payload terminates the original string literal and appends attacker-controlled SQL clauses such as UNION SELECT statements or boolean conditions. The vulnerability mechanism is documented in the public GitHub Issue Discussion and the VulDB entry #303544. No verified proof-of-concept code is referenced beyond these advisories.

Detection Methods for CVE-2025-3330

Indicators of Compromise

• HTTP POST requests to /reservation_save.php containing SQL metacharacters such as single quotes, UNION, SELECT, --, or /* in the first parameter.
• Web server access logs showing unusually long or encoded values for reservation form fields.
• Database error messages or 500-status responses generated by the reservation save endpoint.
• Unexpected reads from tables not referenced by the normal reservation workflow.

Detection Strategies

• Deploy web application firewall (WAF) rules that match common SQL injection signatures against POST bodies targeting /reservation_save.php.
• Enable database query logging and alert on syntactically anomalous queries originating from the reservation module.
• Correlate web request logs with database audit logs to identify input that produces unexpected query structures.

Monitoring Recommendations

• Monitor for repeated 4xx/5xx responses from /reservation_save.php indicating injection probing.
• Track outbound data volumes from the database server to detect bulk extraction.
• Alert on the creation of new database users or privilege changes following requests to the reservation endpoint.

How to Mitigate CVE-2025-3330

Immediate Actions Required

• Restrict public access to the Online Restaurant Management System until a vendor patch is verified. Place the application behind authentication or VPN.
• Deploy WAF rules blocking SQL injection patterns on all parameters accepted by /reservation_save.php.
• Review database accounts used by the application and remove privileges beyond those required by the reservation workflow.

Patch Information

No official vendor patch is referenced in the NVD entry or the linked advisories at publication time. Administrators should monitor the Code-Projects GitHub disclosure and VulDB #303544 for updates. Until a fix is released, mitigations must rely on compensating controls.

Workarounds

• Modify /reservation_save.php to use parameterized queries via PDO or mysqli prepared statements for the first field and all other user-supplied parameters.
• Apply server-side input validation enforcing expected character sets and maximum lengths for reservation form fields.
• Run the database account used by the application with the minimum privileges required, denying INFORMATION_SCHEMA access where possible.
• If the application is not actively required, disable the reservation module or remove the deployment from internet-accessible networks.

# Example WAF rule (ModSecurity) to block SQLi patterns on reservation_save.php
SecRule REQUEST_URI "@streq /reservation_save.php" \
  "chain,id:1003330,phase:2,deny,status:403,msg:'Possible SQLi in reservation_save.php (CVE-2025-3330)'"
  SecRule ARGS "@rx (?i)(union(\s|\+)+select|--|/\*|;|\bor\b\s+1=1)" "t:none,t:urlDecodeUni"