CVE-2024-0426: ForU CMS SQL Injection Vulnerability

CVE-2024-0426 Overview

A critical SQL injection vulnerability has been identified in ForU CMS versions up to 2020-06-23. This vulnerability affects the file admin/cms_template.php, where improper handling of the t_name and t_path parameters allows attackers to inject malicious SQL queries. The attack can be initiated remotely without authentication, potentially allowing unauthorized access to the underlying database, data exfiltration, and complete system compromise.

Critical Impact

This SQL injection vulnerability enables remote attackers to manipulate database queries through the t_name and t_path parameters, potentially leading to unauthorized data access, data modification, and full database compromise without requiring any authentication.

Affected Products

• ForU CMS (all versions up to 2020-06-23)
• foru_cms_project foru_cms

Discovery Timeline

• 2024-01-11 - CVE-2024-0426 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-0426

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) exists in the administrative template management functionality of ForU CMS. The vulnerable file admin/cms_template.php processes user-supplied input through the t_name and t_path parameters without adequate sanitization or parameterization. When these values are incorporated into SQL queries, an attacker can craft malicious input that alters the intended query logic.

The vulnerability is particularly dangerous because it resides in an administrative interface that may be exposed to the network. An attacker exploiting this flaw could extract sensitive information from the database, modify or delete data, or potentially escalate their access to achieve code execution on the underlying server through database-specific attack techniques.

Root Cause

The root cause of this vulnerability is the failure to properly validate, sanitize, or parameterize user-supplied input before incorporating it into SQL queries. The t_name and t_path parameters are passed directly into database queries, allowing specially crafted input to break out of the intended query context and execute arbitrary SQL commands.

This represents a classic SQL injection pattern where dynamic query construction using string concatenation creates an avenue for injection attacks. The absence of prepared statements or parameterized queries leaves the application vulnerable to this well-known attack class.

Attack Vector

The attack can be performed remotely over the network. An attacker targets the admin/cms_template.php endpoint and manipulates the t_name or t_path parameters with SQL injection payloads. Since the vulnerability requires no authentication or user interaction, an attacker with network access to the vulnerable CMS installation can directly exploit this flaw.

Typical exploitation involves crafting requests that include SQL metacharacters and query fragments in the vulnerable parameters. These payloads can be used to perform UNION-based extraction, boolean-based blind injection, or time-based blind injection techniques to enumerate and exfiltrate database contents.

Technical details and exploitation information have been publicly disclosed. For more information, see the GitHub SQL Injection Vulnerability documentation and VulDB #250445.

Detection Methods for CVE-2024-0426

Indicators of Compromise

• Web server access logs showing requests to admin/cms_template.php with suspicious characters in t_name or t_path parameters (e.g., single quotes, UNION, SELECT, OR 1=1)
• Database query logs containing unexpected or malformed SQL statements
• Unusual database error messages in application logs indicating SQL syntax errors
• Evidence of data exfiltration or unauthorized database access in audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the t_name and t_path parameters
• Implement intrusion detection signatures for common SQL injection payloads in HTTP requests to ForU CMS administrative endpoints
• Configure database activity monitoring to alert on anomalous query patterns or unauthorized data access
• Review web server logs for requests containing SQL metacharacters or keywords in URL parameters

Monitoring Recommendations

• Enable detailed logging for the admin/cms_template.php endpoint and review logs regularly for suspicious activity
• Monitor database query execution times and patterns to detect potential time-based blind SQL injection attempts
• Implement real-time alerting for blocked WAF requests targeting ForU CMS administrative functions
• Track and investigate any unauthorized access attempts to the administrative interface

How to Mitigate CVE-2024-0426

Immediate Actions Required

• Restrict network access to the ForU CMS administrative interface (/admin/) to trusted IP addresses only
• Implement a Web Application Firewall with SQL injection protection rules in front of the ForU CMS installation
• Consider taking the vulnerable application offline until proper mitigations or patches can be applied
• Audit database logs and system access to determine if the vulnerability has already been exploited

Patch Information

No official patch information is currently available from the vendor. ForU CMS has not released a security update addressing this vulnerability as of the last NVD modification date. Organizations using ForU CMS should consider migrating to an actively maintained CMS platform or implementing robust network-level protections.

For additional technical details and threat intelligence, refer to VulDB CTI #250445.

Workarounds

• Implement strict input validation on the t_name and t_path parameters at the application level using a whitelist approach
• Deploy network-level access controls to restrict administrative endpoint access to authorized internal IP addresses
• Use a reverse proxy with SQL injection detection capabilities to filter malicious requests before they reach the application
• Consider disabling or removing the cms_template.php functionality if it is not required for business operations

# Example: Restrict access to ForU CMS admin directory via Apache .htaccess
<Directory "/var/www/html/forucms/admin">
    Order Deny,Allow
    Deny from all
    Allow from 10.0.0.0/8
    Allow from 192.168.0.0/16
</Directory>