CVE-2025-3400 Overview
A critical SQL injection vulnerability has been identified in ESAFENET CDG version 5.6.3.154.205_20250114. The vulnerability exists in the /client/UnChkMailApplication.jsp file, where improper handling of the typename parameter allows attackers to inject malicious SQL commands. This flaw can be exploited remotely without authentication, potentially enabling unauthorized data access, modification, or system compromise.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data extraction, data modification, or further system compromise. The vendor was contacted but did not respond to the disclosure.
Affected Products
- ESAFENET CDG version 5.6.3.154.205_20250114
Discovery Timeline
- April 8, 2025 - CVE-2025-3400 published to NVD
- April 9, 2025 - Last updated in NVD database
Technical Details for CVE-2025-3400
Vulnerability Analysis
This SQL injection vulnerability in ESAFENET CDG arises from insufficient input validation in the UnChkMailApplication.jsp endpoint. The application fails to properly sanitize the typename parameter before incorporating it into SQL queries, allowing attackers to inject arbitrary SQL statements. Since the vulnerability is network-accessible and requires no authentication or user interaction, attackers can remotely craft malicious requests to exploit the flaw.
The vulnerability has been mapped to CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild.
Root Cause
The root cause of this vulnerability is improper input validation and inadequate sanitization of user-supplied data in the typename parameter within the /client/UnChkMailApplication.jsp file. The application directly incorporates untrusted input into SQL queries without proper parameterization or escaping, enabling attackers to modify the query structure and inject malicious SQL commands.
Attack Vector
The attack vector is network-based, allowing remote exploitation without requiring authentication or user interaction. An attacker can send specially crafted HTTP requests to the vulnerable JSP endpoint, manipulating the typename parameter to inject SQL code. This could enable the attacker to:
- Extract sensitive information from the database
- Modify or delete database records
- Bypass authentication mechanisms
- Potentially escalate privileges within the application
The vulnerability is accessible through the /client/UnChkMailApplication.jsp endpoint, where the typename parameter is processed without adequate security controls. Technical details and proof-of-concept information have been documented in the GitHub Report Document referenced in the disclosure.
Detection Methods for CVE-2025-3400
Indicators of Compromise
- Unusual or malformed HTTP requests targeting /client/UnChkMailApplication.jsp with suspicious typename parameter values
- Database query logs containing SQL injection patterns such as UNION SELECT, OR 1=1, or single quotes in unexpected contexts
- Unexpected database access patterns or data exfiltration attempts
- Web application firewall (WAF) alerts for SQL injection attempts against the affected endpoint
Detection Strategies
- Deploy web application firewall rules to detect and block SQL injection attempts targeting the UnChkMailApplication.jsp endpoint
- Monitor HTTP access logs for requests containing SQL injection patterns in the typename parameter
- Implement database activity monitoring to detect anomalous query patterns
- Enable verbose logging on the ESAFENET CDG application to capture suspicious request details
Monitoring Recommendations
- Configure real-time alerting for SQL injection signatures in WAF and IDS/IPS systems
- Regularly review database audit logs for unauthorized access or data extraction attempts
- Monitor network traffic for unusual outbound connections from the CDG server that could indicate data exfiltration
- Implement application-level logging to track all requests to vulnerable JSP endpoints
How to Mitigate CVE-2025-3400
Immediate Actions Required
- Restrict network access to the /client/UnChkMailApplication.jsp endpoint using firewall rules or access control lists
- Deploy web application firewall rules to block requests containing SQL injection patterns in the typename parameter
- Consider temporarily disabling the affected functionality if it is not business-critical
- Monitor for exploitation attempts and review logs for any signs of compromise
Patch Information
No official patch information is available from ESAFENET at this time. According to the vulnerability disclosure, the vendor was contacted but did not respond. Organizations using ESAFENET CDG should contact the vendor directly for patch availability or consider alternative mitigations until a fix is released.
For additional technical details, refer to:
Workarounds
- Implement input validation at the network perimeter using a WAF to filter SQL injection attempts
- Restrict access to the ESAFENET CDG application to trusted IP ranges only
- If possible, modify the application configuration to disable or restrict access to the vulnerable JSP endpoint
- Consider implementing a reverse proxy with SQL injection filtering capabilities in front of the application
# Example WAF rule to block SQL injection in typename parameter
# ModSecurity rule example
SecRule ARGS:typename "@detectSQLi" "id:100001,phase:2,deny,status:403,log,msg:'SQL Injection attempt blocked in typename parameter'"
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