EUVD-2025-20461

Comprehensive Technical Analysis of EUVD-2025-20461

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-20461 pertains to an SQL injection flaw in versions of Quiter Gateway prior to 4.7.0. This vulnerability is critical, with a CVSS base score of 9.3, indicating a high level of severity. The CVSS vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N breaks down as follows:

• Attack Vector (AV:N): Network, meaning the vulnerability is exploitable remotely.
• Attack Complexity (AC:L): Low, indicating that the attack does not require specialized conditions.
• Authentication (AT:N): None, meaning no authentication is required to exploit the vulnerability.
• Privileges Required (PR:N): None, indicating that no special privileges are needed.
• User Interaction (UI:N): None, meaning no user interaction is required.
• Confidentiality Impact (VC:H): High, indicating significant loss of confidentiality.
• Integrity Impact (VI:H): High, indicating significant loss of integrity.
• Availability Impact (VA:H): High, indicating significant loss of availability.

The high scores in confidentiality, integrity, and availability impact underscore the critical nature of this vulnerability.

2. Potential Attack Vectors and Exploitation Methods

The SQL injection vulnerability can be exploited through the suceso.contenido mensaje parameter in the /QMSCliente/Sucesos.action endpoint. Potential attack vectors include:

• Direct SQL Injection: An attacker can inject malicious SQL queries directly into the vulnerable parameter to manipulate the database.
• Blind SQL Injection: An attacker can use conditional statements to infer information about the database structure and content.
• Union-Based SQL Injection: An attacker can use UNION SQL queries to combine the results of two SELECT statements into a single result.

Exploitation methods may involve:

• Automated Tools: Using automated SQL injection tools to identify and exploit the vulnerability.
• Manual Exploitation: Crafting custom SQL queries to extract, modify, or delete data.

3. Affected Systems and Software Versions

The vulnerability affects Quiter Gateway versions prior to 4.7.0. Specifically, it impacts the Java WAR deployment on Apache Tomcat. Organizations using these versions are at risk and should prioritize updating to version 4.7.0 or later.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Immediate Patching: Upgrade to Quiter Gateway version 4.7.0 or later, which addresses the vulnerability.
• Input Validation: Implement robust input validation and sanitization to prevent malicious SQL queries.
• Parameterized Queries: Use parameterized queries or prepared statements to ensure that SQL code is not directly executed.
• Web Application Firewalls (WAF): Deploy WAFs to detect and block SQL injection attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and remediate similar issues.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using Quiter Gateway, particularly those in sectors where data integrity and confidentiality are critical, such as finance, healthcare, and government. The potential for data breaches, unauthorized data manipulation, and service disruptions could have far-reaching implications, including financial losses, reputational damage, and regulatory penalties.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Endpoint: /QMSCliente/Sucesos.action
• Vulnerable Parameter: suceso.contenido mensaje
• Exploitation Technique: SQL injection through crafted SQL queries.
• Detection: Monitor for unusual database queries and access patterns. Implement logging and alerting for suspicious activities.
• Remediation: Apply the latest patches and ensure that all input is properly validated and sanitized.

Conclusion

The SQL injection vulnerability in Quiter Gateway versions prior to 4.7.0 is a critical issue that requires immediate attention. Organizations should prioritize patching and implementing robust security measures to protect against potential exploitation. The impact on the European cybersecurity landscape underscores the need for vigilant monitoring and proactive security management.

References

• INCIBE Notice
• EUVD ID: EUVD-2025-20461
• CVE ID: CVE-2025-40716