CVE-2024-43040: Renwoxing Management System SQLi Flaw

CVE-2024-43040 Overview

CVE-2024-43040 is a critical SQL Injection vulnerability discovered in Renwoxing Enterprise Intelligent Management System before version 3.0. The vulnerability exists in the /fx/baseinfo/SearchInfo endpoint, where the parid parameter is susceptible to SQL injection attacks due to insufficient input validation and sanitization.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability to extract sensitive data from the database and potentially modify database contents, compromising data confidentiality and integrity.

Affected Products

• Renwoxing Enterprise Intelligent Management System versions prior to v3.0
• Systems exposing the /fx/baseinfo/SearchInfo endpoint

Discovery Timeline

• 2024-09-10 - CVE-2024-43040 published to NVD
• 2024-09-12 - Last updated in NVD database

Technical Details for CVE-2024-43040

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the Renwoxing Enterprise Intelligent Management System's search functionality. The vulnerable endpoint /fx/baseinfo/SearchInfo fails to properly sanitize user-supplied input in the parid parameter before incorporating it into SQL queries. This allows attackers to manipulate the query logic and execute arbitrary SQL commands against the backend database.

The vulnerability is remotely exploitable without requiring any authentication or user interaction. Successful exploitation can lead to unauthorized access to sensitive information stored in the database, including user credentials, business data, and system configuration details. Additionally, attackers may be able to modify or delete database records, leading to data integrity issues.

Root Cause

The root cause of this vulnerability is improper input validation and the use of unsanitized user input directly in SQL query construction. The application fails to implement parameterized queries or prepared statements, allowing the parid parameter value to be directly concatenated into SQL statements. This classic SQL injection pattern enables attackers to break out of the intended query structure and inject malicious SQL code.

Attack Vector

The attack can be executed remotely over the network by sending specially crafted HTTP requests to the vulnerable endpoint. An attacker would target the /fx/baseinfo/SearchInfo endpoint with a malicious payload in the parid parameter. The injected SQL code is then executed by the database server with the same privileges as the application's database user.

The exploitation process involves crafting requests with SQL injection payloads such as UNION-based attacks to extract data, Boolean-based blind injection to enumerate database contents, or time-based blind injection techniques. For detailed technical analysis and proof-of-concept information, refer to the GitHub Gist PoC published by the security researcher.

Detection Methods for CVE-2024-43040

Indicators of Compromise

• Unusual or malformed requests to /fx/baseinfo/SearchInfo endpoint containing SQL syntax characters (single quotes, double dashes, UNION, SELECT, etc.)
• Database error messages in application logs indicating SQL syntax errors
• Unexpected database query patterns or high volume of database operations 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 SQL injection patterns in the parid parameter
• Implement database activity monitoring to identify anomalous query patterns
• Configure application logging to capture all requests to the /fx/baseinfo/SearchInfo endpoint for forensic analysis
• Enable database query auditing to track potentially malicious SQL statements

Monitoring Recommendations

• Monitor HTTP request logs for suspicious characters and SQL keywords in URL parameters
• Set up alerts for database errors that may indicate injection attempts
• Track unusual data access patterns that could indicate successful exploitation
• Review web server access logs for repeated requests to the vulnerable endpoint from suspicious IP addresses

How to Mitigate CVE-2024-43040

Immediate Actions Required

• Upgrade Renwoxing Enterprise Intelligent Management System to version 3.0 or later
• Implement network-level access controls to restrict access to the vulnerable endpoint
• Deploy WAF rules specifically targeting SQL injection attempts on the parid parameter
• Consider temporarily disabling or blocking access to the /fx/baseinfo/SearchInfo endpoint until patching is complete

Patch Information

The vulnerability has been addressed in Renwoxing Enterprise Intelligent Management System version 3.0. Organizations running affected versions should prioritize upgrading to the patched version. For additional technical details and proof-of-concept information, see the GitHub Gist PoC.

Workarounds

• Implement input validation at the application level to sanitize the parid parameter
• Use parameterized queries or prepared statements for all database operations
• Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
• Apply the principle of least privilege to the database user account used by the application

# Example WAF rule configuration for SQL injection protection
# Block requests containing common SQL injection patterns in parid parameter
# This is a generic example - adjust for your specific WAF solution

# ModSecurity rule example
SecRule ARGS:parid "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in parid parameter'"