EUVD-2024-51453

Comprehensive Technical Analysis of EUVD-2024-51453

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-51453 pertains to a Weak Authentication issue in the Drupal Two-factor Authentication (TFA) module. This vulnerability allows for Authentication Abuse, which can lead to unauthorized access to user accounts. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, indicating a critical risk. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability can be exploited remotely over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources to exploit.
• Privileges Required (PR): None (N) - No special privileges are needed to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
• Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
• Confidentiality (C): High (H) - The vulnerability allows for unauthorized access to sensitive information.
• Integrity (I): High (H) - The vulnerability allows for unauthorized modification of data.
• Availability (A): High (H) - The vulnerability allows for disruption of services.

Given the high scores in Confidentiality, Integrity, and Availability, this vulnerability poses a significant threat to the security of systems using the affected Drupal TFA module.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this vulnerability is through network-based exploitation. An attacker could exploit the weak authentication mechanism in the TFA module to bypass the two-factor authentication process. Potential exploitation methods include:

• Brute Force Attacks: Attackers may use automated tools to guess authentication credentials.
• Credential Stuffing: Using previously leaked credentials from other breaches to gain unauthorized access.
• Phishing: Tricking users into revealing their authentication details.
• Man-in-the-Middle (MitM) Attacks: Intercepting authentication tokens or credentials during transmission.

3. Affected Systems and Software Versions

The vulnerability affects the Drupal Two-factor Authentication (TFA) module versions from 0.0.0 before 1.5.0. Any Drupal installation using these versions of the TFA module is at risk. Organizations and individuals using Drupal should immediately check their TFA module version and apply the necessary updates.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Update to the Latest Version: Upgrade the Drupal TFA module to version 1.5.0 or later, which includes the necessary security patches.
• Implement Strong Authentication Mechanisms: Use robust authentication methods such as hardware tokens, biometric authentication, or time-based one-time passwords (TOTP).
• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address potential weaknesses.
• Monitor for Suspicious Activity: Implement monitoring tools to detect and respond to unusual login attempts or authentication failures.
• User Education: Educate users about the importance of strong passwords and the risks associated with phishing attacks.

5. Impact on European Cybersecurity Landscape

The vulnerability in the Drupal TFA module poses a significant risk to the European cybersecurity landscape, particularly for organizations that rely on Drupal for their web presence. Given the widespread use of Drupal in various sectors, including government, education, and business, the potential impact of this vulnerability is substantial. Unauthorized access to sensitive information, data breaches, and service disruptions could have far-reaching consequences, including financial losses, reputational damage, and legal repercussions.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerability Identification: The vulnerability is identified as CVE-2024-13239 and is assigned the EUVD ID EUVD-2024-51453.
• Affected Component: The vulnerability resides in the authentication mechanism of the Drupal TFA module.
• Exploitation Details: The weak authentication mechanism allows attackers to bypass the two-factor authentication process, potentially leading to unauthorized access.
• Patch Information: The issue is addressed in Drupal TFA module version 1.5.0. Organizations should apply this update as soon as possible.
• References: For more information, refer to the Drupal security advisory at https://www.drupal.org/sa-contrib-2024-003.

In conclusion, the vulnerability EUVD-2024-51453 in the Drupal TFA module is a critical issue that requires immediate attention. Organizations should prioritize updating their systems and implementing robust security measures to mitigate the risk of exploitation.