CVE-2025-8987: Covid19 Testing Management System SQLi Flaw

CVE-2025-8987 Overview

A SQL injection vulnerability has been identified in SourceCodester COVID 19 Testing Management System version 1.0. This vulnerability affects the /test-details.php file, where improper handling of the remark parameter allows attackers to inject malicious SQL statements. The vulnerability can be exploited remotely without authentication, potentially allowing 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 records, or potentially gain unauthorized access to the underlying system through database-level attacks.

Affected Products

• Unyasoft COVID-19 Testing Management System version 1.0
• SourceCodester COVID 19 Testing Management System 1.0

Discovery Timeline

• August 14, 2025 - CVE-2025-8987 published to NVD
• August 18, 2025 - Last updated in NVD database

Technical Details for CVE-2025-8987

Vulnerability Analysis

This SQL injection vulnerability exists in the /test-details.php file of the COVID-19 Testing Management System. The application fails to properly sanitize user-supplied input in the remark parameter before incorporating it into SQL queries. This allows attackers to manipulate the SQL query logic by injecting malicious SQL code through the parameter.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which encompasses injection flaws where untrusted input is not properly sanitized before being used in sensitive operations.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and parameterized queries in the application's database interaction layer. The /test-details.php script directly concatenates user input from the remark parameter into SQL statements without sanitization, escaping, or the use of prepared statements. This classic injection flaw pattern allows attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests targeting the /test-details.php endpoint with specially crafted remark parameter values containing SQL injection payloads. These payloads can be designed to extract data (using UNION-based or blind SQL injection techniques), modify or delete records, or potentially execute operating system commands depending on database configuration and privileges.

The exploitation involves sending HTTP requests with SQL metacharacters and injection payloads in the remark parameter. An attacker could use techniques such as single-quote injection to test for vulnerability, UNION SELECT statements to extract data from other tables, or time-based blind injection to infer database contents. Technical details and proof-of-concept information are available in the GitHub Issue Discussion and VulDB entry #319983.

Detection Methods for CVE-2025-8987

Indicators of Compromise

• Unusual or malformed HTTP requests to /test-details.php containing SQL keywords (SELECT, UNION, INSERT, DELETE, DROP) in the remark parameter
• Database error messages appearing in application logs or HTTP responses indicating SQL syntax errors
• Unexpected database query patterns or increased database load from the web application
• Evidence of data exfiltration or unauthorized database access in audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in HTTP parameters
• Enable detailed logging for the /test-details.php endpoint and monitor for suspicious parameter values
• Implement database activity monitoring to detect anomalous queries originating from the web application
• Use intrusion detection systems with SQL injection signature rules focused on PHP application traffic

Monitoring Recommendations

• Monitor web server access logs for requests to /test-details.php with encoded or suspicious characters in query strings
• Set up alerts for database errors or exceptions that may indicate injection attempts
• Review application and database logs regularly for signs of unauthorized data access or manipulation
• Implement real-time monitoring for outbound data transfers that could indicate data exfiltration

How to Mitigate CVE-2025-8987

Immediate Actions Required

• Restrict network access to the affected COVID-19 Testing Management System to trusted IP addresses only
• Implement Web Application Firewall (WAF) rules to filter SQL injection patterns on the /test-details.php endpoint
• Consider taking the application offline if it contains sensitive data until a proper fix can be applied
• Review database access logs for signs of prior exploitation and conduct forensic analysis if compromise is suspected

Patch Information

No official vendor patch has been released for this vulnerability at the time of publication. The application is distributed through SourceCodester, a platform for open-source projects. Organizations using this software should monitor for updates or consider implementing the workarounds below. For more information about this vulnerability, refer to the VulDB advisory.

Workarounds

• Modify the /test-details.php source code to use parameterized queries (prepared statements) with PDO or mysqli instead of direct string concatenation
• Implement strict input validation on the remark parameter, allowing only expected characters and rejecting SQL metacharacters
• Apply the principle of least privilege to database accounts used by the application, restricting permissions to only necessary operations
• Deploy a reverse proxy or WAF with SQL injection protection in front of the application as an additional defense layer

# Example: Restrict access to the vulnerable endpoint using .htaccess
# Add to .htaccess file in the application directory

<Files "test-details.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    # Replace with your trusted network range
</Files>