EUVD-2025-20464

Comprehensive Technical Analysis of EUVD-2025-20464

1. Vulnerability Assessment and Severity Evaluation

The EUVD entry EUVD-2025-20464 describes a SQL injection vulnerability in versions prior to 4.7.0 of Quiter Gateway by Quiter. This vulnerability is rated with a Base Score of 9.3 according to CVSS 4.0, indicating a critical severity level. The Base Score 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:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Attack Complexity): The attack requires minimal skill and resources.
• AT:N (No Authentication Required): No authentication is needed to exploit the vulnerability.
• PR:N (No Privileges Required): No special privileges are required.
• UI:N (No User Interaction): No user interaction is needed.
• VC:H (High Confidentiality Impact): The vulnerability can lead to significant data breaches.
• VI:H (High Integrity Impact): The vulnerability can compromise data integrity.
• VA:H (High Availability Impact): The vulnerability can cause significant disruption to services.
• SC:N (No Scope Change): The vulnerability does not affect other security scopes.
• SI:N (No Integrity Change): The vulnerability does not affect the integrity of the security scope.
• SA:N (No Availability Change): The vulnerability does not affect the availability of the security scope.

2. Potential Attack Vectors and Exploitation Methods

The SQL injection vulnerability can be exploited through the campo parameter in the /<Client>FacturaE/BusquedasFacturasSesion endpoint. Potential attack vectors include:

• Direct SQL Injection: An attacker can inject malicious SQL queries directly into the campo parameter to manipulate the database.
• Blind SQL Injection: An attacker can use blind SQL injection techniques to extract data without direct feedback from the application.
• Error-Based SQL Injection: An attacker can exploit error messages returned by the application to gain information about the database structure.

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 updates or patches.

4. Recommended Mitigation Strategies

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

• Update to the Latest Version: Upgrade to Quiter Gateway version 4.7.0 or later, which includes the necessary patches.
• Input Validation and Sanitization: Implement robust input validation and sanitization mechanisms to prevent SQL injection attacks.
• Parameterized Queries: Use parameterized queries or prepared statements to ensure that SQL commands are executed safely.
• Web Application Firewalls (WAFs): Deploy WAFs to monitor and block malicious SQL injection attempts.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security issues.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations within the European Union that rely on Quiter Gateway for their operations. Given the critical nature of the vulnerability, it could lead to data breaches, financial losses, and disruption of services. The European Cybersecurity Competence Centre (ECCC) and national cybersecurity authorities should issue advisories and guidelines to ensure that affected organizations take appropriate actions.

6. Technical Details for Security Professionals

• Vulnerability Identification: The vulnerability is identified by EUVD ID EUVD-2025-20464 and CVE ID CVE-2025-40713.
• Affected Endpoint: The campo parameter in the /<Client>FacturaE/BusquedasFacturasSesion endpoint is vulnerable to SQL injection.
• Exploitation: Attackers can inject SQL commands through the campo parameter to manipulate the database.
• Detection: Monitoring for unusual database queries and error messages can help detect potential exploitation attempts.
• Remediation: Upgrade to Quiter Gateway version 4.7.0 or later and implement additional security measures as outlined in the mitigation strategies.

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 updating to the latest version and implementing robust security measures to protect against potential exploitation. The European cybersecurity community should collaborate to ensure widespread awareness and mitigation of this vulnerability.