CVE-2024-5071 in Bookster Plugin
Summary
by MITRE • 06/26/2024
The Bookster WordPress plugin through 1.1.0 allows adding sensitive parameters when validating appointments allowing attackers to manipulate the data sent when booking an appointment (the request body) to change its status from pending to approved.
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Analysis
by VulDB Data Team • 10/29/2024
The Bookster WordPress plugin version 1.1.0 contains a critical authorization vulnerability that enables attackers to manipulate appointment booking data through improper parameter validation. This vulnerability specifically affects the appointment validation process where sensitive parameters are inadvertently exposed during appointment creation and modification operations. The flaw allows malicious actors to inject arbitrary data into the request body when submitting appointment bookings, potentially altering the appointment status from pending to approved without proper authentication or authorization. This represents a significant security weakness in the plugin's access control mechanisms and data validation processes.
The technical implementation of this vulnerability stems from insufficient input sanitization and validation within the plugin's appointment handling code. When users submit appointment requests, the system fails to properly validate or sanitize the parameters received in the request body, allowing attackers to manipulate fields that control appointment status. This type of vulnerability falls under CWE-20, which encompasses improper input validation, and specifically relates to CWE-285, improper authorization, as the system does not adequately verify that the requesting user has the appropriate permissions to modify appointment status. The vulnerability enables privilege escalation through parameter manipulation, where an unauthenticated or low-privileged attacker can potentially approve appointments that should require administrative approval.
The operational impact of this vulnerability extends beyond simple data manipulation, as it creates a pathway for unauthorized appointment approval that could lead to significant service disruption and potential financial loss. Attackers could exploit this flaw to approve appointments for services they have not paid for, potentially allowing them to access premium features or services without proper authorization. This vulnerability also affects the integrity of the appointment system, as it enables attackers to manipulate the appointment status database entries. The attack surface is particularly concerning in environments where the plugin handles sensitive appointment data, such as medical appointments, legal consultations, or any service requiring proper authorization before providing access to resources. This vulnerability directly aligns with ATT&CK technique T1078.004, which covers valid accounts and T1496, which involves resource hijacking, as attackers can manipulate system resources through unauthorized status changes.
Mitigation strategies for this vulnerability should include immediate patching of the Bookster plugin to version 1.1.1 or later, which addresses the parameter validation issues. Administrators should implement additional security measures such as input validation and sanitization for all appointment-related parameters, ensuring that only authorized users can modify appointment status fields. The system should enforce proper authorization checks before allowing any status changes, implementing role-based access control to ensure that only administrators or authorized personnel can approve appointments. Additionally, implementing request parameter whitelisting and comprehensive logging of appointment status changes can help detect and prevent unauthorized modifications. Network monitoring should be enhanced to detect unusual patterns in appointment approval requests, and regular security audits should be conducted to identify similar vulnerabilities in other plugins or custom code. Organizations should also consider implementing web application firewalls to filter potentially malicious requests and ensure that all user inputs are properly validated before processing appointment data. The vulnerability highlights the critical importance of proper input validation and authorization checks in web applications, particularly those handling user appointment and scheduling data.