EUVD-2025-20462

Comprehensive Technical Analysis of EUVD-2025-20462

1. Vulnerability Assessment and Severity Evaluation

The EUVD entry EUVD-2025-20462 describes a critical SQL injection vulnerability in versions prior to 4.7.0 of Quiter Gateway by Quiter. The vulnerability is located in the campo mensaje parameter within the /QISClient/api/v1/sucesospaginas endpoint. This vulnerability allows an attacker to execute arbitrary SQL commands, potentially leading to unauthorized access, data manipulation, and data exfiltration.

Severity Evaluation:

• Base Score: 9.3 (Critical)
• Base Score Version: 4.0
• 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

The high base score indicates that this vulnerability is critical due to its potential for significant impact on confidentiality, integrity, and availability. The attack vector is network-based (AV:N), requires low complexity (AC:L), and does not require any privileges (PR:N) or user interaction (UI:N).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability over the network without needing physical access to the system.
• Low Complexity: The attack requires minimal technical skill and resources to execute.

Exploitation Methods:

• SQL Injection: An attacker can inject malicious SQL code into the campo mensaje parameter to manipulate the database.
• Automated Tools: Attackers may use automated tools to scan for and exploit SQL injection vulnerabilities.

Example Exploitation:

/QISClient/api/v1/sucesospaginas?campo_mensaje=' OR '1'='1

This payload could be used to bypass authentication or retrieve sensitive data.

3. Affected Systems and Software Versions

Affected Systems:

• Quiter Gateway (Java WAR on Apache Tomcat)

Affected Versions:

• All versions prior to 4.7.0

Vendor:

• Quiter

4. Recommended Mitigation Strategies

Immediate Actions:

• Patching: Upgrade to Quiter Gateway version 4.7.0 or later.
• Input Validation: Implement strict input validation and sanitization for all user inputs, especially for the campo mensaje parameter.
• Parameterized Queries: Use parameterized queries or prepared statements to prevent SQL injection.
• Web Application Firewall (WAF): Deploy a WAF to detect and block SQL injection attempts.

Long-Term Strategies:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments.
• Security Training: Provide security training for developers to understand and mitigate SQL injection vulnerabilities.
• Monitoring: Implement continuous monitoring and logging to detect and respond to suspicious activities.

5. Impact on European Cybersecurity Landscape

The vulnerability in Quiter Gateway poses a significant risk to organizations using this software, particularly within the European Union. Given the critical nature of the vulnerability, it could lead to data breaches, financial loss, and reputational damage. The European Cybersecurity Competence Centre (ECCC) and national CERTs should prioritize awareness and mitigation efforts to protect critical infrastructure and sensitive data.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2025-40715
• Assigner: INCIBE (Spanish National Cybersecurity Institute)
• References: INCIBE Advisory

Technical Recommendations:

• Code Review: Conduct a thorough code review to identify and remediate all instances of SQL injection vulnerabilities.
• Database Security: Implement least privilege access controls for database users.
• Error Handling: Ensure that error messages do not reveal sensitive information about the database structure.
• Logging: Enable detailed logging for database queries to detect and analyze suspicious activities.

Example of Secure Query:

String query = "SELECT * FROM sucesospaginas WHERE campo_mensaje = ?";
PreparedStatement pstmt = connection.prepareStatement(query);
pstmt.setString(1, userInput);
ResultSet rs = pstmt.executeQuery();

By following these recommendations, organizations can significantly reduce the risk of SQL injection attacks and enhance their overall cybersecurity posture.