CVE-2024-57768: JFinalOA SQL Injection Vulnerability

CVE-2024-57768 Overview

CVE-2024-57768 is a SQL injection vulnerability discovered in JFinalOA, an open-source office automation system. The vulnerability exists in versions prior to v2025.01.01 and can be exploited through the validRoleKey?sysRole.key component, allowing unauthenticated attackers to inject malicious SQL queries and potentially compromise the entire database backend.

Critical Impact

This SQL injection vulnerability allows remote attackers to execute arbitrary SQL commands without authentication, potentially leading to complete database compromise, data exfiltration, and unauthorized system access.

Affected Products

• JFinalOA versions prior to v2025.01.01
• jfinaloa_project jfinaloa (all versions before the patched release)

Discovery Timeline

• 2025-01-16 - CVE-2024-57768 published to NVD
• 2025-05-28 - Last updated in NVD database

Technical Details for CVE-2024-57768

Vulnerability Analysis

This SQL injection vulnerability affects the role validation mechanism in JFinalOA. The validRoleKey endpoint accepts user-supplied input through the sysRole.key parameter without proper sanitization or parameterization. This design flaw allows attackers to craft malicious input that breaks out of the intended SQL query structure and executes arbitrary database commands.

The vulnerability is particularly severe because it requires no authentication to exploit, can be triggered remotely over the network, and potentially provides attackers with full read/write access to the underlying database. Successful exploitation could lead to unauthorized data access, data modification, privilege escalation within the application, or complete database takeover.

Root Cause

The root cause of CVE-2024-57768 is improper input validation and the use of dynamic SQL query construction without proper parameterization. The validRoleKey function directly incorporates user-supplied data from the sysRole.key parameter into SQL queries without adequate sanitization, escaping, or the use of prepared statements. This is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command).

Attack Vector

The vulnerability is exploited via network-based attacks targeting the validRoleKey endpoint. An attacker can send specially crafted HTTP requests to the vulnerable endpoint containing SQL injection payloads in the sysRole.key parameter. Since no authentication is required and the attack complexity is low, exploitation can be performed remotely by any attacker with network access to the JFinalOA application.

The attack flow typically involves:

1. Identifying the vulnerable validRoleKey?sysRole.key endpoint
2. Crafting malicious SQL injection payloads to probe the database structure
3. Extracting sensitive data or manipulating database contents through injected SQL commands

For technical details on this vulnerability, see the Gitee Issue Discussion where the issue was originally reported.

Detection Methods for CVE-2024-57768

Indicators of Compromise

• Unusual SQL syntax or error messages appearing in application logs related to the validRoleKey endpoint
• Unexpected database queries or data access patterns from web server processes
• HTTP requests to validRoleKey containing SQL metacharacters such as single quotes, semicolons, or UNION keywords
• Signs of data exfiltration or unauthorized database modifications

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the sysRole.key parameter
• Implement application-level logging to capture all requests to the validRoleKey endpoint for forensic analysis
• Configure database query monitoring to alert on unusual query patterns or error rates
• Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable verbose logging for the JFinalOA application to capture request parameters and database query execution
• Monitor database server logs for failed queries, syntax errors, or unusual command execution
• Set up real-time alerting for requests containing known SQL injection patterns targeting critical endpoints
• Implement anomaly detection for database access patterns that deviate from normal application behavior

How to Mitigate CVE-2024-57768

Immediate Actions Required

• Upgrade JFinalOA to version v2025.01.01 or later immediately to remediate this vulnerability
• If immediate patching is not possible, restrict network access to the affected application using firewall rules
• Deploy WAF rules to block SQL injection attempts targeting the validRoleKey endpoint as a temporary mitigation
• Audit database access logs for signs of prior exploitation and investigate any suspicious activity

Patch Information

The vulnerability has been addressed in JFinalOA version v2025.01.01. Organizations running affected versions should upgrade to this patched release as soon as possible. Additional details about the vulnerability and remediation can be found in the Gitee Issue Discussion.

Workarounds

• Implement input validation on the sysRole.key parameter to reject requests containing SQL metacharacters
• Deploy a reverse proxy or WAF in front of the application configured to filter SQL injection payloads
• Restrict access to administrative endpoints including validRoleKey to trusted IP addresses only
• Consider disabling or limiting functionality of the role validation feature until the patch can be applied

# Example: Restrict access to vulnerable endpoint using iptables (temporary mitigation)
# Allow only internal network access to the JFinalOA application
iptables -A INPUT -p tcp --dport 8080 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP