CVE-2024-3420 Overview
A critical SQL injection vulnerability has been discovered in SourceCodester Online Courseware version 1.0. This vulnerability exists in the admin/saveedit.php file, where the manipulation of the id parameter allows attackers to inject malicious SQL queries. The attack can be launched remotely without authentication, potentially allowing attackers to read, modify, or delete sensitive data from the underlying database.
Critical Impact
This SQL injection vulnerability allows unauthenticated remote attackers to compromise the database, potentially exposing student records, administrative credentials, and course materials while enabling complete system compromise.
Affected Products
- Argie Online Courseware version 1.0
- SourceCodester Online Courseware 1.0
Discovery Timeline
- 2024-04-07 - CVE-2024-3420 published to NVD
- 2025-01-17 - Last updated in NVD database
Technical Details for CVE-2024-3420
Vulnerability Analysis
This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The vulnerable component resides in the administrative module of the Online Courseware application, specifically within the admin/saveedit.php file. The id parameter is passed directly into SQL queries without proper sanitization or parameterized query implementation, allowing attackers to manipulate the database operations.
The exploit has been publicly disclosed, increasing the risk of exploitation by malicious actors. Since the vulnerability exists in an administrative endpoint that can be accessed remotely over the network without requiring any prior authentication or user interaction, it presents a significant security risk to any exposed installations.
Root Cause
The root cause of this vulnerability is the failure to properly sanitize or parameterize user-supplied input before incorporating it into SQL queries. The id parameter in the admin/saveedit.php file is directly concatenated into SQL statements, allowing attackers to break out of the intended query structure and inject arbitrary SQL commands.
This is a classic example of improper input validation where user-controlled data is trusted and used directly in database operations without employing prepared statements or proper escaping mechanisms.
Attack Vector
The attack can be executed remotely over the network by sending crafted HTTP requests to the admin/saveedit.php endpoint with malicious SQL payload in the id parameter. No authentication is required to exploit this vulnerability, and no user interaction is needed.
An attacker could leverage standard SQL injection techniques such as:
- Union-based injection to extract data from other database tables
- Boolean-based blind injection to enumerate database contents
- Time-based blind injection when direct output is not available
- Stacked queries to execute multiple SQL statements including INSERT, UPDATE, or DELETE operations
Technical details and proof-of-concept information can be found in the GitHub Courseware Documentation and the VulDB #259592 advisory.
Detection Methods for CVE-2024-3420
Indicators of Compromise
- Unusual or malformed HTTP requests targeting admin/saveedit.php with suspicious id parameter values
- Database query logs showing SQL syntax errors or unexpected query patterns
- Presence of SQL keywords (UNION, SELECT, DROP, etc.) in web server access logs for the affected endpoint
- Unexpected database modifications or data exfiltration activities
Detection Strategies
- Deploy web application firewall (WAF) rules to detect and block SQL injection patterns in requests to admin/saveedit.php
- Implement intrusion detection signatures monitoring for SQL injection payloads in HTTP parameters
- Enable database query logging and audit trails to identify suspicious query patterns
- Review web server access logs for requests containing encoded or obfuscated SQL injection attempts
Monitoring Recommendations
- Monitor network traffic for connections to the Online Courseware administrative endpoints from unexpected sources
- Implement alerting on database errors or anomalous query execution times that may indicate injection attempts
- Track authentication and authorization events for the administrative interface
- Set up real-time monitoring for any unauthorized data access or modification in the application database
How to Mitigate CVE-2024-3420
Immediate Actions Required
- Restrict network access to the admin/saveedit.php endpoint using firewall rules or access control lists
- If the application is not critical, consider taking it offline until a fix can be implemented
- Implement input validation and parameterized queries in the vulnerable code if source code access is available
- Deploy a web application firewall with SQL injection protection rules as a compensating control
Patch Information
No official vendor patch has been identified for this vulnerability. The affected product, SourceCodester Online Courseware 1.0, does not appear to have a security update available. Organizations using this software should contact the vendor directly or consider the workarounds below.
For additional technical information, refer to:
Workarounds
- Implement prepared statements with parameterized queries in the admin/saveedit.php file if source code modification is possible
- Deploy a reverse proxy or WAF with strict SQL injection filtering rules in front of the application
- Restrict access to administrative endpoints to trusted IP addresses only using network-level controls
- Consider migrating to a more actively maintained learning management system if patches are unavailable
# Example: Restrict access to admin directory via Apache .htaccess
# Add to /path/to/courseware/admin/.htaccess
<Files "saveedit.php">
Order deny,allow
Deny from all
Allow from 192.168.1.0/24
</Files>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
