CVE-2024-0461: Faculty Clearance System SQLi Vulnerability

CVE-2024-0461 Overview

A critical SQL injection vulnerability has been identified in Fabian Online Faculty Clearance System version 1.0. The vulnerability exists in the deactivate.php file within the HTTP POST Request Handler component. Improper sanitization of the haydi parameter allows attackers to inject malicious SQL statements, potentially leading to unauthorized database access, data manipulation, and complete system compromise.

Critical Impact

This SQL injection vulnerability can be exploited remotely without authentication, allowing attackers to extract sensitive data, modify database records, or potentially gain control of the underlying database server.

Affected Products

• Fabian Online Faculty Clearance System 1.0

Discovery Timeline

• 2024-01-12 - CVE-2024-0461 published to NVD
• 2025-10-23 - Last updated in NVD database

Technical Details for CVE-2024-0461

Vulnerability Analysis

This vulnerability represents a classic SQL injection flaw caused by insufficient input validation in the deactivate.php file. The application fails to properly sanitize user-supplied input passed through the haydi parameter in HTTP POST requests before incorporating it into SQL queries. This allows an attacker to inject arbitrary SQL commands that are executed by the database server with the privileges of the application's database user.

The vulnerability can be exploited remotely without requiring any authentication, making it particularly dangerous in internet-facing deployments. Successful exploitation could result in complete compromise of database confidentiality, integrity, and availability.

Root Cause

The root cause of this vulnerability is the direct incorporation of user-supplied input from the haydi parameter into SQL queries without proper sanitization, parameterization, or prepared statements. The application code likely concatenates the raw input directly into SQL query strings, allowing attackers to break out of the intended query context and inject their own SQL commands.

Attack Vector

The attack is conducted remotely over the network by sending specially crafted HTTP POST requests to the deactivate.php endpoint. An attacker manipulates the haydi parameter to include malicious SQL syntax that alters the intended query logic. Common exploitation techniques include:

• Using UNION-based injection to extract data from other tables
• Employing boolean-based or time-based blind injection to enumerate database contents
• Utilizing stacked queries to execute additional SQL statements for data modification or deletion

The exploitation details have been publicly disclosed and documented in the GitHub SQL Injection Document. Additional technical details are available through VulDB #250566.

Detection Methods for CVE-2024-0461

Indicators of Compromise

• Unusual or malformed HTTP POST requests to deactivate.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords in the haydi parameter
• Database error messages exposed in application responses indicating SQL syntax errors
• Abnormal database query patterns or execution times suggesting time-based blind injection attempts
• Unexpected data access or modification in database audit logs

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rules targeting the deactivate.php endpoint
• Implement application-level logging to capture all POST requests to the vulnerable endpoint with parameter values
• Configure database activity monitoring to alert on unusual query patterns or unauthorized data access
• Use intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Enable detailed access logging on web servers to track requests to deactivate.php
• Monitor database logs for failed query attempts or syntax errors that may indicate exploitation attempts
• Set up alerts for high-frequency requests to the vulnerable endpoint from single IP addresses
• Review application logs regularly for evidence of data exfiltration or unauthorized access

How to Mitigate CVE-2024-0461

Immediate Actions Required

• Remove or disable access to the deactivate.php file until a proper fix can be implemented
• Implement input validation and sanitization for all user-supplied parameters, especially the haydi parameter
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules as a temporary mitigation measure
• Restrict network access to the application to trusted IP ranges if possible

Patch Information

No official vendor patch is currently available for this vulnerability. Organizations using the affected software should contact the vendor for remediation guidance or implement the workarounds described below. Monitor the VulDB entry for updates on patch availability.

Workarounds

• Rewrite the vulnerable code to use parameterized queries or prepared statements instead of string concatenation
• Implement strict input validation that whitelists acceptable characters for the haydi parameter
• Apply the principle of least privilege to database accounts used by the application to limit potential damage
• Consider replacing or removing the Online Faculty Clearance System if the vendor does not provide timely patches

# Recommended remediation: Use prepared statements
# Instead of direct string concatenation, use PDO prepared statements:
# $stmt = $pdo->prepare("SELECT * FROM table WHERE column = :haydi");
# $stmt->execute(['haydi' => $input]);