EUVD-2024-47192

Comprehensive Technical Analysis of EUVD-2024-47192

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The Quiz Maker plugin for WordPress is susceptible to a time-based SQL Injection vulnerability via the 'ays_questions' parameter. This vulnerability arises due to insufficient escaping of user-supplied input and inadequate preparation of SQL queries. The flaw allows unauthenticated attackers to inject malicious SQL code, potentially extracting sensitive information from the database.

Severity Evaluation: The vulnerability has a CVSS Base Score of 9.8, which is classified as 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)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high severity score underscores the critical nature of the vulnerability, which can lead to significant data breaches and system compromises.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Access: Attackers can exploit this vulnerability without needing to authenticate, making it highly accessible.
• Time-Based SQL Injection: The attacker can inject SQL code that causes a delay in the database response, allowing them to extract information by measuring the time taken for the query to execute.

Exploitation Methods:

• SQL Injection: Attackers can craft SQL queries to extract sensitive data, such as user credentials, personal information, and other confidential data stored in the database.
• Data Exfiltration: By manipulating SQL queries, attackers can exfiltrate large amounts of data, leading to significant data breaches.

3. Affected Systems and Software Versions

Affected Systems:

• WordPress websites using the Quiz Maker plugin.

Affected Software Versions:

• All versions of the Quiz Maker plugin up to and including 6.5.8.3.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the Quiz Maker plugin is updated to a version higher than 6.5.8.3, where the vulnerability has been patched.
• Disable the Plugin: If an update is not immediately available, consider disabling the plugin until a secure version is released.

Long-Term Mitigations:

• Input Validation and Sanitization: Implement robust input validation and sanitization mechanisms to prevent SQL injection attacks.
• Prepared Statements: Use prepared statements and parameterized queries to ensure that SQL queries are executed safely.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential security issues.
• Monitoring and Logging: Implement comprehensive monitoring and logging to detect and respond to suspicious activities promptly.

5. Impact on European Cybersecurity Landscape

Regulatory Compliance:

• GDPR: The vulnerability poses a significant risk to personal data, which could result in GDPR violations and potential fines.
• NIS Directive: Organizations in critical sectors must ensure the security of their digital infrastructure, and this vulnerability could compromise their compliance with the NIS Directive.

Economic Impact:

• Data Breaches: Successful exploitation could lead to data breaches, resulting in financial losses, reputational damage, and legal consequences.
• Operational Disruption: Compromised systems could lead to operational disruptions, affecting business continuity and service availability.

6. Technical Details for Security Professionals

Vulnerability Details:

• Parameter: 'ays_questions'
• Vulnerable Code: The vulnerability is present in the class-quiz-maker-public.php file, specifically around lines 4904 and 6901 in version 6.5.7.5.
• Exploit Method: Attackers can inject SQL code into the 'ays_questions' parameter, which is not properly escaped or prepared, leading to SQL injection.

References:

• Wordfence Threat Intel: Wordfence Vulnerability Report
• WordPress Plugin Repository: Quiz Maker Plugin
• Changeset Details: Changeset 3103402 and Changeset 3105555

Conclusion: The SQL Injection vulnerability in the Quiz Maker plugin for WordPress is critical and requires immediate attention. Organizations should prioritize updating the plugin and implementing robust security measures to mitigate the risk of exploitation. Regular security assessments and adherence to best practices will help maintain a secure cyber environment.