EUVD-2025-21781

Comprehensive Technical Analysis of EUVD-2025-21781

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-21781 pertains to a SQL Injection flaw in the WeGIA web manager, specifically affecting versions prior to 3.4.6. The vulnerability is located in the idatendido_familiares parameter of the /html/funcionario/dependente_editarDoc.php endpoint. SQL Injection vulnerabilities are critical because they allow attackers to manipulate SQL queries, potentially leading to unauthorized access to sensitive database information.

The Base Score of 9.4, as per CVSS 4.0, indicates a high severity. The vector string CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H breaks down as follows:

• AV:N (Network): The vulnerability is exploitable over the network.
• AC:L (Low): The attack complexity is low.
• AT:N (None): No special authentication is required.
• PR:L (Low): The attacker requires low privileges.
• UI:N (None): No user interaction is required.
• VC:H (High): The vulnerability has a high impact on confidentiality.
• VI:H (High): The vulnerability has a high impact on integrity.
• VA:H (High): The vulnerability has a high impact on availability.
• SC:H (High): The scope change is high.
• SI:H (High): The impact on the secondary scope is high.
• SA:H (High): The impact on the secondary availability is high.

This high severity score underscores the critical nature of the vulnerability, necessitating immediate attention and mitigation.

2. Potential Attack Vectors and Exploitation Methods

Attackers can exploit this vulnerability by injecting malicious SQL code into the idatendido_familiares parameter. Common exploitation methods include:

• Union-Based SQL Injection: Attackers can use UNION SELECT statements to extract data from other tables.
• Error-Based SQL Injection: Attackers can induce database errors to gather information about the database structure.
• Blind SQL Injection: Attackers can use conditional statements to infer information based on the application's behavior.

Potential attack vectors include:

• Direct SQL Injection: Crafting SQL queries directly through the vulnerable parameter.
• Stored Procedure Injection: Injecting malicious code into stored procedures.
• Second-Order SQL Injection: Injecting malicious code that is stored and executed later.

3. Affected Systems and Software Versions

The vulnerability affects WeGIA versions prior to 3.4.6. Organizations using these versions are at risk and should prioritize updating to version 3.4.6 or later.

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following steps are recommended:

• Update to Version 3.4.6 or Later: Immediately update to the patched version to eliminate the vulnerability.
• Input Validation and Sanitization: Implement robust input validation and sanitization to prevent malicious SQL code from being executed.
• Parameterized Queries: Use parameterized queries or prepared statements to ensure that SQL code is not directly executed from user input.
• Web Application Firewalls (WAF): Deploy WAFs to detect and block SQL Injection attempts.
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues.

5. Impact on European Cybersecurity Landscape

The vulnerability in WeGIA, an open-source web manager with a focus on the Portuguese language and charitable institutions, highlights the importance of securing open-source software. Given the widespread use of open-source solutions in Europe, this vulnerability underscores the need for:

• Enhanced Collaboration: Greater collaboration between open-source communities and cybersecurity experts.
• Regulatory Compliance: Ensuring compliance with European cybersecurity regulations and standards.
• Public Awareness: Increasing public awareness about the risks associated with unpatched software.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Endpoint: /html/funcionario/dependente_editarDoc.php
• Vulnerable Parameter: idatendido_familiares
• Exploitation Techniques: Union-based, error-based, and blind SQL injection.
• Mitigation Techniques: Parameterized queries, input validation, WAF deployment.
• Patch Information: Update to WeGIA version 3.4.6 or later.

References:

• GitHub Security Advisory

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