CVE-2025-6579: Anisha Car Rental System SQLi Vulnerability

CVE-2025-6579 Overview

A critical SQL injection vulnerability has been identified in code-projects Car Rental System version 1.0. This issue affects the /message_admin.php file where improper handling of the Message argument allows for SQL injection attacks. The vulnerability can be exploited remotely without authentication, potentially enabling attackers to manipulate database queries, extract sensitive information, modify data, or compromise the underlying database server.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to execute arbitrary SQL commands against the backend database, potentially leading to unauthorized data access, data manipulation, and complete database compromise.

Affected Products

• Anisha Car Rental System 1.0
• code-projects Car Rental System 1.0

Discovery Timeline

• 2025-06-24 - CVE CVE-2025-6579 published to NVD
• 2025-07-11 - Last updated in NVD database

Technical Details for CVE-2025-6579

Vulnerability Analysis

This SQL injection vulnerability exists in the Car Rental System's /message_admin.php endpoint. The application fails to properly sanitize or parameterize user input provided through the Message argument before incorporating it into SQL queries. This classic injection flaw allows attackers to inject malicious SQL statements that are then executed by the database engine with the same privileges as the application's database connection.

The vulnerability has been classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The exploit has been publicly disclosed, increasing the risk of exploitation in the wild.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries (prepared statements) in the /message_admin.php file. User-supplied input from the Message parameter is directly concatenated into SQL queries without proper sanitization, escaping, or the use of parameterized statements. This allows attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack can be initiated remotely over the network without requiring authentication or user interaction. An attacker can craft malicious HTTP requests to the /message_admin.php endpoint with specially crafted payloads in the Message parameter. These payloads can include SQL syntax designed to alter query logic, extract database contents through UNION-based injection, execute time-based blind injection for data exfiltration, or perform destructive operations depending on database permissions.

The vulnerability is exploited by sending crafted input through the Message parameter that contains SQL metacharacters and commands. Common exploitation techniques include using single quotes to escape string contexts, UNION SELECT statements to retrieve data from other tables, and stacked queries if supported by the database configuration. Technical details are available in the GitHub CVE Issue #4 and VulDB #313775.

Detection Methods for CVE-2025-6579

Indicators of Compromise

• Web server logs showing requests to /message_admin.php with SQL syntax characters such as single quotes, double dashes, UNION, SELECT, or semicolons in the Message parameter
• Database logs indicating unusual query patterns, errors related to SQL syntax, or unauthorized data access attempts
• Evidence of database enumeration activities including attempts to query system tables or schema information
• Unexpected database modifications or data exfiltration patterns in network traffic

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block SQL injection patterns in requests to /message_admin.php
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable detailed logging on web servers and database servers to capture suspicious parameter values
• Deploy application-level monitoring to detect anomalous database query patterns

Monitoring Recommendations

• Monitor HTTP access logs for requests containing SQL injection payloads targeting the vulnerable endpoint
• Set up alerts for database errors or exceptions that may indicate injection attempts
• Track database query execution times to detect time-based blind SQL injection attacks
• Review database audit logs for unauthorized SELECT statements or data manipulation operations

How to Mitigate CVE-2025-6579

Immediate Actions Required

• Restrict access to /message_admin.php using IP whitelisting or authentication requirements until a patch is available
• Deploy a web application firewall (WAF) with SQL injection protection rules
• Implement input validation to sanitize the Message parameter before processing
• Consider taking the affected application offline if it contains sensitive data and cannot be adequately protected

Patch Information

No official vendor patch has been released at the time of this publication. Organizations using the affected Car Rental System should monitor the Code Projects Security Hub for updates. Given the nature of code-projects applications, users may need to implement their own fixes using parameterized queries.

Workarounds

• Implement prepared statements with parameterized queries in the /message_admin.php file to prevent SQL injection
• Add input validation and sanitization for the Message parameter, rejecting or escaping SQL metacharacters
• Deploy a WAF configured to block requests containing SQL injection patterns
• Restrict database user privileges to limit potential damage from successful exploitation
• Consider implementing application-level firewall rules to block access to the vulnerable endpoint

# Example: Apache mod_rewrite rule to block access to vulnerable endpoint
# Add to .htaccess or Apache configuration
<Location "/message_admin.php">
    Order deny,allow
    Deny from all
    # Allow only trusted IPs
    Allow from 192.168.1.0/24
</Location>