CVE-2025-8372: Exam Form Submission SQLi Vulnerability

CVE-2025-8372 Overview

A critical SQL injection vulnerability has been identified in Code-projects Exam Form Submission version 1.0. The vulnerability exists in the /admin/update_s7.php file, where improper handling of the credits parameter allows attackers to inject malicious SQL commands. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to the underlying database, data manipulation, and information disclosure.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially gain further access to the underlying system through the unvalidated credits parameter.

Affected Products

• Code-projects Exam Form Submission 1.0

Discovery Timeline

• 2025-07-31 - CVE-2025-8372 published to NVD
• 2025-08-05 - Last updated in NVD database

Technical Details for CVE-2025-8372

Vulnerability Analysis

This SQL injection vulnerability stems from inadequate input validation in the administrative functionality of the Exam Form Submission application. The affected endpoint /admin/update_s7.php accepts user-supplied input through the credits parameter without proper sanitization or parameterized query implementation. Since the vulnerability is network-accessible and requires no authentication or user interaction, it presents a significant risk to organizations deploying this application.

The exploit has been publicly disclosed, increasing the likelihood of opportunistic attacks against vulnerable installations. Successful exploitation could result in unauthorized data access, modification of academic records, or complete database compromise depending on the database user privileges.

Root Cause

The root cause of CVE-2025-8372 is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The application fails to properly sanitize or escape special characters in the credits parameter before incorporating it into SQL queries. This allows attackers to break out of the intended query context and inject arbitrary SQL commands that the database server will execute with the application's privileges.

Attack Vector

The attack can be launched remotely over the network by sending crafted HTTP requests to the /admin/update_s7.php endpoint. An attacker can manipulate the credits parameter to include SQL syntax that alters the behavior of the underlying database query. Common exploitation techniques include:

• Union-based injection to extract data from other tables
• Boolean-based blind injection to infer database contents
• Time-based blind injection when direct output is not visible
• Stacked queries to execute multiple SQL statements (database-dependent)

The vulnerability requires no special privileges or user interaction, making it particularly dangerous for internet-facing installations. See the GitHub Issue Discussion for additional technical details about the exploitation methodology.

Detection Methods for CVE-2025-8372

Indicators of Compromise

• HTTP requests to /admin/update_s7.php containing SQL keywords in the credits parameter such as UNION, SELECT, INSERT, UPDATE, DELETE, or DROP
• Unusual database query patterns or errors in application logs indicating malformed SQL statements
• Web application firewall logs showing blocked SQL injection attempts targeting the vulnerable endpoint
• Database audit logs revealing unauthorized queries or data access patterns

Detection Strategies

• Deploy web application firewall (WAF) rules specifically targeting SQL injection patterns in requests to /admin/update_s7.php
• Implement application-level logging to capture all parameters submitted to administrative endpoints
• Configure database audit logging to detect unusual query patterns or unauthorized data access
• Utilize intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Monitor web server access logs for repeated requests to /admin/update_s7.php with unusual parameter values
• Set up alerts for database error messages that may indicate injection attempts
• Review authentication logs for any signs of unauthorized administrative access following exploitation
• Implement real-time monitoring for data exfiltration patterns from the database server

How to Mitigate CVE-2025-8372

Immediate Actions Required

• Restrict access to the /admin/update_s7.php endpoint using network-level controls or authentication requirements
• Implement a web application firewall rule to block requests containing SQL injection patterns to the affected endpoint
• Consider temporarily disabling the vulnerable functionality until a patch is available
• Audit database logs for signs of prior exploitation and assess potential data compromise

Patch Information

As of the last update on 2025-08-05, no official vendor patch has been released for this vulnerability. Organizations should monitor the Code Projects Resource Hub for security updates. In the absence of an official patch, implementing the workarounds and mitigations listed below is strongly recommended.

For additional technical analysis and tracking information, refer to the VulDB CVE Analysis #318344.

Workarounds

• Implement server-side input validation to sanitize the credits parameter, allowing only numeric values
• Deploy the application behind a reverse proxy with SQL injection filtering capabilities
• Restrict network access to administrative endpoints using IP whitelisting or VPN requirements
• If modifying the source code is possible, convert dynamic SQL queries to use prepared statements with parameterized queries

The recommended approach for fixing this vulnerability involves modifying the application code to use parameterized queries or prepared statements instead of dynamic SQL construction. This ensures that user input is always treated as data rather than executable code, effectively neutralizing SQL injection attacks regardless of the input provided.