EUVD-2025-6771

Comprehensive Technical Analysis of EUVD-2025-6771

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The EUVD entry EUVD-2025-6771 pertains to a SQL injection vulnerability in CM Soluces Informatica Ltda Auto Atendimento 1.x.x, specifically via the CPF (Cadastro de Pessoas Físicas) parameter. This vulnerability allows an attacker to inject malicious SQL code into the application, potentially leading to unauthorized access to the database, data manipulation, and other severe impacts.

Severity Evaluation: The vulnerability has a CVSS (Common Vulnerability Scoring System) base score of 9.8, which is considered critical. The CVSS vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): None (N) - No special privileges are needed to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Unchanged (U) - The vulnerability does not affect other systems or components.
• Confidentiality (C): High (H) - The vulnerability can lead to a complete breach of confidentiality.
• Integrity (I): High (H) - The vulnerability can lead to a complete breach of integrity.
• Availability (A): High (H) - The vulnerability can lead to a complete breach of availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• SQL Injection: An attacker can inject SQL commands through the CPF parameter, potentially allowing them to execute arbitrary SQL queries on the database.
• Data Exfiltration: By crafting specific SQL queries, an attacker can extract sensitive information from the database.
• Data Manipulation: The attacker can modify, delete, or insert data into the database, leading to data integrity issues.
• Denial of Service (DoS): The attacker can execute SQL commands that overload the database, causing it to become unavailable.

Exploitation Methods:

• Manual Exploitation: An attacker can manually craft SQL injection payloads and send them through the CPF parameter.
• Automated Tools: Use of automated SQL injection tools like SQLmap to identify and exploit the vulnerability.
• Scripting: Writing custom scripts to automate the injection process and extract data.

3. Affected Systems and Software Versions

Affected Systems:

• CM Soluces Informatica Ltda Auto Atendimento 1.x.x

Software Versions:

• All versions within the 1.x.x range are affected.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the latest patches and updates provided by CM Soluces Informatica Ltda.
• Input Validation: Implement strict input validation and sanitization for the CPF parameter to prevent SQL injection.
• Parameterized Queries: Use parameterized queries or prepared statements to ensure that SQL commands are executed safely.
• Web Application Firewall (WAF): Deploy a WAF to detect and block SQL injection attempts.

Long-Term Mitigation:

• Code Review: Conduct a thorough code review to identify and fix similar vulnerabilities.
• Security Training: Provide security training for developers to prevent future SQL injection vulnerabilities.
• Regular Audits: Perform regular security audits and penetration testing to identify and mitigate vulnerabilities.

5. Impact on European Cybersecurity Landscape

Impact Analysis:

• Data Breaches: The vulnerability can lead to significant data breaches, affecting the confidentiality and integrity of personal and sensitive information.
• Regulatory Compliance: Organizations may face regulatory penalties under GDPR (General Data Protection Regulation) for failing to protect personal data.
• Reputation Damage: Data breaches can result in reputational damage and loss of customer trust.
• Financial Losses: Organizations may incur financial losses due to data breaches, regulatory fines, and remediation costs.

6. Technical Details for Security Professionals

Technical Insights:

• Vulnerability Identification: The vulnerability can be identified by analyzing the SQL queries executed by the application when the CPF parameter is manipulated.
• Exploitation Detection: Monitor database logs for unusual SQL queries and patterns indicative of SQL injection attempts.
• Mitigation Implementation: Implement input validation using regular expressions or whitelisting allowed characters for the CPF parameter. Use prepared statements in SQL queries to ensure that user input is treated as data rather than executable code.
• Incident Response: In case of an exploitation, follow incident response procedures to contain the breach, identify the extent of the compromise, and notify affected parties as required by GDPR.

References:

• NVD Entry
• GitHub PoC

By addressing this vulnerability promptly and effectively, organizations can mitigate the risk of data breaches and ensure the security and integrity of their systems.