CVE-2025-55168

Comprehensive Technical Analysis of CVE-2025-55168

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-55168 CVSS Score: 9.8

The vulnerability in question is a SQL Injection flaw in the WeGIA web manager, specifically affecting the /html/saude/aplicar_medicamento.php endpoint via the id_fichamedica parameter. This vulnerability allows attackers to execute arbitrary SQL commands, which can lead to unauthorized access, data manipulation, and potential data exfiltration.

Severity Evaluation:

• Confidentiality Impact: High
• Integrity Impact: High
• Availability Impact: High

Given the CVSS score of 9.8, this vulnerability is considered critical. The high score reflects the potential for severe impacts on confidentiality, integrity, and availability of the database and the application itself.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Direct SQL Injection: An attacker can inject malicious SQL code through the id_fichamedica parameter to manipulate the database.
• Blind SQL Injection: Attackers can use timing-based or error-based techniques to extract information without direct feedback from the application.

Exploitation Methods:

• Data Exfiltration: Attackers can extract sensitive information such as user credentials, personal data, and financial information.
• Data Manipulation: Attackers can alter database records, leading to integrity issues.
• Denial of Service (DoS): Attackers can execute commands that overload the database, causing it to become unavailable.

3. Affected Systems and Software Versions

Affected Software:

• WeGIA web manager versions prior to 3.4.8.

Affected Systems:

• Any system running the vulnerable versions of WeGIA, particularly those with the /html/saude/aplicar_medicamento.php endpoint exposed to the internet.

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade to Version 3.4.8: Ensure all instances of WeGIA are updated to version 3.4.8 or later, where the vulnerability has been patched.
• Input Validation: Implement strict input validation and sanitization for all user inputs, especially for parameters like id_fichamedica.
• Parameterized Queries: Use parameterized queries or prepared statements to prevent SQL injection.

Long-Term Strategies:

• Regular Security Audits: Conduct regular security audits and code reviews to identify and mitigate similar vulnerabilities.
• Web Application Firewalls (WAF): Deploy WAFs to monitor and block malicious SQL injection attempts.
• Database Security: Implement database security measures such as least privilege access, encryption, and regular backups.

5. Impact on Cybersecurity Landscape

The discovery and exploitation of SQL Injection vulnerabilities continue to be a significant concern in the cybersecurity landscape. This particular vulnerability highlights the importance of secure coding practices and regular updates. Organizations relying on open-source software must be vigilant in monitoring for vulnerabilities and applying patches promptly.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /html/saude/aplicar_medicamento.php
• Parameter: id_fichamedica
• Vulnerable Versions: WeGIA versions prior to 3.4.8

Exploit Example: An attacker could inject SQL code by manipulating the id_fichamedica parameter:

id_fichamedica=1'; DROP TABLE users; --

Mitigation Example: Using parameterized queries in PHP:

$stmt = $pdo->prepare("SELECT * FROM medicamentos WHERE id_fichamedica = :id_fichamedica");
$stmt->bindParam(':id_fichamedica', $id_fichamedica);
$stmt->execute();

References:

• GitHub Commit
• GitHub Issue
• Security Advisory

By following these recommendations and staying informed about security advisories, organizations can significantly reduce the risk associated with SQL Injection vulnerabilities like CVE-2025-55168.