EUVD-2024-49816

Comprehensive Technical Analysis of EUVD-2024-49816

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The WP Timetics- AI-powered Appointment Booking Calendar and Online Scheduling Plugin for WordPress is vulnerable to Account Takeover/Privilege Escalation via Insecure Direct Object Reference (IDOR). This vulnerability exists in all versions up to and including 1.0.25, specifically within the save() function due to missing validation on a user-controlled key.

Severity Evaluation:

• Base Score: 9.8
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high base score of 9.8 indicates a critical vulnerability. The CVSS vector breakdown shows that the vulnerability can be exploited over the network (AV:N), requires low complexity (AC:L), does not require any privileges (PR:N) or user interaction (UI:N), and has a high impact on confidentiality, integrity, and availability (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Attackers: Due to the lack of validation, unauthenticated attackers can exploit the vulnerability by sending crafted requests to the save() function.
• Direct Object Reference: Attackers can manipulate the user-controlled key to target specific user accounts, including administrators.

Exploitation Methods:

• Email and Password Reset: Attackers can reset the emails and passwords of arbitrary user accounts, leading to account takeover.
• Privilege Escalation: By resetting the credentials of administrator accounts, attackers can gain elevated privileges, allowing them to perform unauthorized actions on the WordPress site.

3. Affected Systems and Software Versions

Affected Systems:

• WordPress sites using the WP Timetics- AI-powered Appointment Booking Calendar and Online Scheduling Plugin.

Affected Software Versions:

• All versions up to and including 1.0.25.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version higher than 1.0.25, 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 Mitigation:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments on all plugins and themes used on the WordPress site.
• Input Validation: Implement robust input validation and sanitization mechanisms to prevent similar vulnerabilities.
• Access Controls: Enforce strict access controls and authentication mechanisms to limit unauthorized access.

5. Impact on European Cybersecurity Landscape

Impact Analysis:

• Widespread Use: Given the popularity of WordPress and the potential widespread use of the WP Timetics plugin, this vulnerability poses a significant risk to numerous websites across Europe.
• Data Breaches: Successful exploitation can lead to data breaches, unauthorized access, and potential financial losses for businesses.
• Regulatory Compliance: Organizations may face regulatory penalties under GDPR for failing to protect user data adequately.

6. Technical Details for Security Professionals

Vulnerability Details:

• Insecure Direct Object Reference (IDOR): The vulnerability arises from the lack of proper validation on a user-controlled key in the save() function.
• Code References:
  • customer.php Line 299
  • Changeset 3169771
  • api-customer.php

Mitigation Steps:

• Code Review: Conduct a thorough code review to identify and fix similar vulnerabilities.
• Patch Management: Implement a robust patch management process to ensure timely updates and patches.
• Monitoring and Logging: Enhance monitoring and logging mechanisms to detect and respond to suspicious activities promptly.

References:

• Wordfence Threat Intel
• WordPress Plugin Repository

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of account takeover and privilege escalation, thereby enhancing their overall cybersecurity posture.