CVE-2024-8432

Appointment & Event Booking Calendar Plugin – Webba Booking <= 5.0.48 - Missing Authorization to Authenticated (Subscriber+) CSS Settings Update

2024-09-23 13:28
Lucio Sá

Strategic Overview

Status
Patched in 5.0.50
Affected Plugin
Easy Appointment Booking & Scheduling System – Webba Booking Calendar
Affected Version
<= 5.0.48
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2024-8432
View all Easy Appointment Booking & Scheduling System – Webba Booking Calendar vulnerabilities

At a glance

CVE-2024-8432 is a medium-severity Missing Authorization vulnerability in the Easy Appointment Booking & Scheduling System WordPress plugin, affecting versions <= 5.0.48. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 5.0.50; sites on affected versions should update now. Disclosed September 2024, reported by Lucio Sá.

Vulnerability Overview

The Appointment & Event Booking Calendar Plugin – Webba Booking plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_appearance() function in all versions up to, and including, 5.0.48. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the booking form's CSS.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-862: Missing Authorization

Easy Appointment Booking & Scheduling System <= 5.0.48 carries this weakness at save_appearance(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Easy Appointment Booking & Scheduling System the fix is 5.0.50: builds <= 5.0.48 are affected, anything from 5.0.50 onward is not.

Remediation

Update to version 5.0.50, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Easy Appointment Booking & Scheduling System 5.0.50 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-8432https://www.wordfence.com/threat-intel/vulnerabilities/id/23b33b77-2e72-4959-bdce-646e968f2a73https://nvd.nist.gov/vuln/detail/CVE-2024-8432

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C