CVE-2025-4060: Notice Board System SQL Injection Flaw

CVE-2025-4060 Overview

A critical SQL injection vulnerability has been discovered in PHPGurukul Notice Board System version 1.0. This security flaw exists in the /category.php file, where the catname parameter is improperly handled, allowing attackers to inject malicious SQL queries. The vulnerability can be exploited remotely without authentication, potentially enabling unauthorized access to sensitive database information, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially gain unauthorized access to the underlying system through the vulnerable catname parameter in /category.php.

Affected Products

• PHPGurukul Notice Board System 1.0
• anujk305 notice_board_system 1.0

Discovery Timeline

• 2025-04-29 - CVE-2025-4060 published to NVD
• 2025-05-09 - Last updated in NVD database

Technical Details for CVE-2025-4060

Vulnerability Analysis

This SQL injection vulnerability affects the /category.php file in PHPGurukul Notice Board System 1.0. The application fails to properly sanitize user-supplied input in the catname parameter before incorporating it into SQL queries. This allows attackers to inject arbitrary SQL commands that execute with the privileges of the database user.

The vulnerability is network-exploitable without requiring authentication or user interaction, making it particularly dangerous for publicly accessible installations. An attacker can leverage this flaw to read, modify, or delete database records, potentially accessing user credentials, sensitive notices, or administrative data stored in the application database.

The exploit has been publicly disclosed, increasing the risk of exploitation in the wild. Organizations using this software should treat this vulnerability as a high-priority security concern despite its MEDIUM severity classification.

Root Cause

The root cause of this vulnerability is insufficient input validation and the lack of parameterized queries in the /category.php file. The application directly concatenates user input from the catname parameter into SQL statements without proper sanitization or escaping. This violates secure coding practices and creates an injection point that attackers can exploit to manipulate database queries.

The vulnerability falls under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating a fundamental failure to properly handle untrusted input before using it in database operations.

Attack Vector

The attack can be initiated remotely over the network by submitting specially crafted requests to the /category.php endpoint. An attacker manipulates the catname parameter to include SQL metacharacters and malicious query fragments that alter the intended SQL command execution.

A typical attack scenario involves sending HTTP requests with SQL injection payloads in the catname parameter. The malicious input bypasses application logic and executes directly against the database, potentially allowing attackers to enumerate database structure, extract table contents, or perform administrative operations depending on database permissions.

For detailed technical information about this vulnerability, refer to the GitHub Issue Discussion and VulDB #306497.

Detection Methods for CVE-2025-4060

Indicators of Compromise

• Unusual or malformed requests to /category.php containing SQL metacharacters such as single quotes, semicolons, or UNION statements
• Database error messages in application logs indicating SQL syntax errors or unexpected query behavior
• Unexpected database queries accessing multiple tables or attempting to enumerate schema information
• Web server access logs showing repeated requests to /category.php with varying catname parameter values

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block SQL injection patterns targeting the catname parameter
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable database query logging and monitor for anomalous queries originating from the Notice Board System application
• Configure application-level logging to capture all requests to /category.php for security analysis

Monitoring Recommendations

• Monitor HTTP request logs for suspicious patterns in the catname parameter, including encoding variations and obfuscation techniques
• Set up alerts for database errors that may indicate injection attempts, particularly syntax errors or permission violations
• Review database audit logs for unauthorized data access or privilege escalation attempts
• Implement real-time monitoring of web application traffic to identify reconnaissance activities targeting this endpoint

How to Mitigate CVE-2025-4060

Immediate Actions Required

• Take the affected Notice Board System instance offline or restrict access to trusted networks until patched
• Implement web application firewall rules to filter malicious input targeting the catname parameter
• Review database access logs for signs of exploitation and conduct forensic analysis if compromise is suspected
• Consider replacing the vulnerable application with a secure alternative if no official patch is available

Patch Information

No official vendor patch has been released for this vulnerability at the time of publication. Organizations should monitor the PHP Gurukul Resource for security updates and patch announcements. Given that this is an open-source project, users may need to implement their own code fixes or consider alternative solutions.

For additional vulnerability details and tracking, refer to the VulDB Submission #559361.

Workarounds

• Implement input validation to sanitize the catname parameter by allowing only alphanumeric characters and rejecting SQL metacharacters
• Deploy a web application firewall (WAF) in front of the application with SQL injection detection rules enabled
• Restrict network access to the Notice Board System to trusted IP addresses or internal networks only
• If source code modification is possible, convert the vulnerable query to use prepared statements with parameterized queries

# Example WAF rule configuration for ModSecurity
# Block SQL injection attempts on category.php
SecRule REQUEST_URI "@contains /category.php" \
    "id:100001,phase:2,deny,status:403,\
    chain"
SecRule ARGS:catname "@detectSQLi" \
    "id:100002,phase:2,deny,status:403,\
    log,msg:'SQL Injection attempt blocked on catname parameter'"