Source: cna@vuldb.com
A security vulnerability has been detected in Yonyou KSOA 9.0. This affects an unknown part of the file /worksheet/agent_work_report.jsp. The manipulation of the argument ID leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Yonyou KSOA 9.0 is vulnerable to a critical SQL injection flaw, allowing remote attackers to execute arbitrary SQL commands. This unpatched vulnerability, affecting the /worksheet/agent_work_report.jsp file, poses a significant risk of data breaches and system compromise. The vendor has not responded to the disclosure, increasing the urgency of mitigation.
Step 1: Payload Delivery: The attacker crafts a malicious SQL injection payload. This payload is designed to manipulate the SQL query executed by the application.
Step 2: Request Submission: The attacker sends a specially crafted HTTP request to the vulnerable endpoint /worksheet/agent_work_report.jsp, including the malicious payload within the ID parameter.
Step 3: Query Execution: The application receives the request and, due to the lack of input validation, directly incorporates the attacker's payload into a SQL query without proper sanitization.
Step 4: Database Interaction: The database server executes the modified SQL query, which now includes the attacker's malicious code.
Step 5: Data Exfiltration/System Compromise: Depending on the payload, the attacker can extract sensitive information (e.g., usernames, passwords, database contents) or execute commands on the database server, potentially leading to complete system compromise.
The vulnerability stems from insufficient input validation of the ID parameter within the /worksheet/agent_work_report.jsp file. Specifically, the application fails to properly sanitize user-supplied input before incorporating it into a SQL query. This allows an attacker to inject malicious SQL code, which is then executed by the database server. The root cause is a missing or inadequate implementation of parameterized queries or input sanitization functions, leading to the direct embedding of user-controlled data into SQL statements. This lack of proper input validation allows for the construction of SQL queries that can bypass security measures, potentially leading to unauthorized access, data modification, or complete system takeover.
While no specific APTs are directly linked to this CVE, the public availability of the exploit code and the vendor's lack of response make it attractive to a wide range of threat actors, including those seeking financial gain or espionage. This vulnerability is a prime target for opportunistic attacks. CISA KEV status: Likely to be added soon due to public exploit and vendor inaction.
Network Intrusion Detection Systems (NIDS) should be configured to detect SQL injection attempts. Look for suspicious patterns in HTTP requests, such as the use of SQL keywords (e.g., SELECT, UPDATE, INSERT, DROP) within the ID parameter of requests to /worksheet/agent_work_report.jsp.
Web Application Firewalls (WAFs) should be deployed and configured to block SQL injection attacks. Implement rules to detect and block malicious payloads in the ID parameter.
Review web server logs for suspicious activity, including unusual HTTP requests to /worksheet/agent_work_report.jsp with potentially malicious payloads in the ID parameter. Look for error messages related to SQL syntax errors.
Monitor database server logs for unusual queries or activity, such as attempts to access sensitive data or modify database schema.
Implement file integrity monitoring to detect any unauthorized changes to the /worksheet/agent_work_report.jsp file.
Implement input validation and sanitization on the server-side. Ensure that all user-supplied input, including the ID parameter, is properly validated and sanitized before being used in SQL queries. Use parameterized queries or prepared statements to prevent SQL injection.
Apply the principle of least privilege. The database user account used by the application should have only the necessary permissions to perform its required tasks. This limits the potential damage if the database is compromised.
Implement a Web Application Firewall (WAF) to filter malicious traffic and block SQL injection attempts.
Regularly update and patch the Yonyou KSOA software to address any security vulnerabilities. Since the vendor has not responded, consider alternative solutions or a complete system replacement.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Monitor network traffic and system logs for suspicious activity. Implement intrusion detection and prevention systems (IDS/IPS).