EUVD-2025-21767

Comprehensive Technical Analysis of EUVD-2025-21767

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in WeGIA, an open-source web manager, is a SQL Injection (SQLi) flaw in versions prior to 3.4.5. This vulnerability is located in the id_funcionario parameter of the /html/saude/profile_paciente.php endpoint. SQL Injection vulnerabilities are critical because they allow attackers to manipulate SQL queries, potentially leading to unauthorized access to sensitive database information, including table names and data.

Severity Evaluation:

• Base Score: 9.4 (CVSS:4.0)
• Base Score Vector: 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

The high base score indicates a severe vulnerability due to the following factors:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): Low (L)
• User Interaction (UI): None (N)
• Confidentiality (VC), Integrity (VI), and Availability (VA) Impact: High (H)
• Scope Change (SC), Scope Integrity (SI), and Scope Availability (SA): High (H)

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: The vulnerability can be exploited remotely over the network.
• Low Complexity: The attack requires minimal skill and resources to execute.
• Low Privileges: The attacker needs only low-level privileges to exploit the vulnerability.

Exploitation Methods:

• SQL Injection: An attacker can inject malicious SQL code into the id_funcionario parameter to manipulate database queries.
• Data Exfiltration: By crafting specific SQL queries, an attacker can extract sensitive information such as user data, financial records, and other confidential information.
• Database Manipulation: The attacker can alter, delete, or corrupt database entries, leading to data integrity issues.

3. Affected Systems and Software Versions

Affected Software:

• WeGIA versions: Prior to 3.4.5

Affected Systems:

• Any system running the vulnerable versions of WeGIA, particularly those used by Portuguese-language charitable institutions.

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade: Upgrade to WeGIA version 3.4.5 or later, which includes the fix for this vulnerability.
• Patch Management: Ensure that all software dependencies are up-to-date and patched.

Long-Term Strategies:

• Input Validation: Implement robust input validation and sanitization for all user inputs, especially those used in SQL queries.
• Parameterized Queries: Use parameterized queries or prepared statements to prevent SQL Injection.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block malicious SQL Injection attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

5. Impact on European Cybersecurity Landscape

The vulnerability in WeGIA, which is used by charitable institutions, poses a significant risk to the European cybersecurity landscape. Charitable organizations often handle sensitive data, including personal information of donors and beneficiaries. A successful exploitation could lead to data breaches, financial loss, and reputational damage.

Regulatory Compliance:

• GDPR: Organizations must ensure compliance with GDPR to protect personal data. A data breach due to this vulnerability could result in regulatory penalties.
• Cybersecurity Directives: Adherence to EU cybersecurity directives and guidelines is crucial to maintain trust and security.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /html/saude/profile_paciente.php
• Parameter: id_funcionario
• Vulnerable Versions: WeGIA < 3.4.5

Exploitation Example: An attacker could inject SQL code into the id_funcionario parameter, such as:

id_funcionario=1'; DROP TABLE users; --

This example demonstrates a destructive SQL Injection that deletes a table.

Mitigation Code Example: Using parameterized queries in PHP:

$stmt = $pdo->prepare("SELECT * FROM pacientes WHERE id_funcionario = :id_funcionario");
$stmt->execute(['id_funcionario' => $id_funcionario]);
$results = $stmt->fetchAll();

References:

• GitHub Advisory: GHSA-532r-mgxv-g7jm
• CVE ID: CVE-2025-53946

Conclusion: The SQL Injection vulnerability in WeGIA is a critical issue that requires immediate attention. Organizations using the affected versions should prioritize upgrading to the patched version and implement robust security measures to prevent future exploitation. The European cybersecurity landscape demands vigilance and proactive measures to safeguard sensitive data and maintain public trust.