CVE-2025-15420: Yonyou Ksoa SQL Injection Vulnerability

CVE-2025-15420 Overview

A SQL injection vulnerability has been identified in Yonyou KSOA 9.0, a Space-Time Enterprise Information Integration Platform. The vulnerability exists in the /worksheet/agent_work_report.jsp file, where improper handling of the ID parameter allows attackers to inject malicious SQL commands. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to sensitive database information, data manipulation, or further system compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially gain unauthorized access to backend systems through the Yonyou KSOA enterprise platform.

Affected Products

• Yonyou KSOA 9.0
• Yonyou Space-Time Enterprise Information Integration Platform

Discovery Timeline

• 2026-01-02 - CVE-2025-15420 published to NVD
• 2026-01-06 - Last updated in NVD database

Technical Details for CVE-2025-15420

Vulnerability Analysis

This SQL injection vulnerability affects the agent_work_report.jsp endpoint within the Yonyou KSOA platform. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The exploit has been publicly disclosed, and the vendor was contacted regarding this issue but did not respond. The attack can be initiated remotely over the network without requiring authentication or user interaction, allowing attackers to target systems directly through crafted HTTP requests.

Root Cause

The root cause of this vulnerability is insufficient input validation and sanitization of the ID parameter in the /worksheet/agent_work_report.jsp file. When user-supplied input is passed to the ID parameter, it is directly incorporated into SQL queries without proper parameterization or escaping, allowing attackers to inject arbitrary SQL statements that are executed by the database backend.

Attack Vector

The attack vector for CVE-2025-15420 is network-based, allowing remote exploitation. An attacker can craft malicious HTTP requests containing SQL injection payloads in the ID parameter of the agent_work_report.jsp endpoint. By manipulating this parameter, attackers can execute unauthorized SQL commands against the underlying database. This could lead to unauthorized data extraction, data modification, or in some cases, command execution on the database server depending on database configuration and privileges.

The vulnerability mechanism involves malicious input being passed through the ID parameter to the JSP endpoint. The application fails to properly sanitize or parameterize this input before constructing SQL queries, allowing SQL metacharacters and commands to be interpreted by the database engine. For detailed technical analysis, refer to the GitHub SQL Injection Analysis.

Detection Methods for CVE-2025-15420

Indicators of Compromise

• Unusual or malformed requests to /worksheet/agent_work_report.jsp containing SQL syntax characters such as single quotes, semicolons, or SQL keywords like UNION, SELECT, DROP
• Database error messages appearing in application responses or logs indicating SQL syntax errors
• Unexpected database queries or excessive database activity originating from web application connections
• Evidence of data exfiltration or unauthorized database access in audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the agent_work_report.jsp endpoint
• Configure intrusion detection systems (IDS/IPS) to alert on HTTP requests containing common SQL injection payloads in the ID parameter
• Enable detailed application and database logging to capture suspicious query patterns and failed SQL execution attempts
• Deploy SentinelOne Singularity Platform for real-time monitoring and behavioral analysis to detect exploitation attempts

Monitoring Recommendations

• Monitor web server access logs for requests to /worksheet/agent_work_report.jsp with abnormal ID parameter values
• Implement database activity monitoring (DAM) to detect unauthorized queries or data access patterns
• Set up alerts for database errors that may indicate injection attempts
• Review audit logs regularly for signs of reconnaissance or exploitation activity

How to Mitigate CVE-2025-15420

Immediate Actions Required

• Restrict network access to the Yonyou KSOA platform to trusted IP addresses and internal networks only
• Implement Web Application Firewall (WAF) rules to filter and block SQL injection attempts targeting the vulnerable endpoint
• Consider disabling or restricting access to the /worksheet/agent_work_report.jsp endpoint until a patch is available
• Review database user permissions and apply principle of least privilege to limit potential damage from successful exploitation

Patch Information

At the time of disclosure, the vendor (Yonyou) was contacted but did not respond. No official patch is currently available for CVE-2025-15420. Organizations should monitor vendor communications and security advisories for future patch releases. Additional technical details can be found at VulDB #339342.

Workarounds

• Deploy input validation filters at the application or WAF level to sanitize the ID parameter before processing
• Implement prepared statements or parameterized queries at the application level if source code modifications are possible
• Isolate the Yonyou KSOA system from direct internet exposure using network segmentation and reverse proxy configurations
• Enable database query logging and monitoring to detect and respond to exploitation attempts in real-time

# Example WAF rule configuration to block SQL injection patterns
# Add to web application firewall or reverse proxy configuration
# Block requests containing common SQL injection patterns in ID parameter
SecRule ARGS:ID "@rx (?i)(union|select|insert|update|delete|drop|;|--)" \
    "id:100001,phase:2,deny,status:403,msg:'SQL Injection Attempt Blocked'"