Event Manager and Tickets Selling Plugin for WooCommerce < 3.5.3 - Arbitrary Settings Change

2021-11-03 00:00
WPScanTeam

Strategic Overview

Status
Patched in 3.5.3
Affected Plugin
Event Booking Manager for WooCommerce – Sell Tickets, Event Registration, RSVP & Event Calendar
Affected Version
< 3.5.3
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE pending
View all Event Booking Manager for WooCommerce – Sell Tickets, Event Registration, RSVP & Event Calendar vulnerabilities

At a glance

This record tracks a medium-severity Missing Authorization vulnerability in the Event Booking Manager for WooCommerce WordPress plugin, affecting versions < 3.5.3. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.5.3; sites on affected versions should update now. Disclosed November 2021, reported by WPScanTeam.

Vulnerability Overview

The Event Manager and Tickets Selling Plugin for WooCommerce plugin for WordPress is vulnerable to arbitrary settings reset via the mep_wl_ajax_license_activate and mep_wl_ajax_license_deactivate functions in versions before 3.5.3. This is due to a missing capabilities check on these functions. This makes it possible for unauthenticated attackers to arbitrarily modify plugin settings.

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 privileges on the target site, and no interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in Event Booking Manager for WooCommerce < 3.5.3 takes a caller who can reach the endpoint. 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 Event Booking Manager for WooCommerce the fix is 3.5.3: builds < 3.5.3 are affected, anything from 3.5.3 onward is not.

Remediation

Update to version 3.5.3, 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: Event Booking Manager for WooCommerce 3.5.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/c63079af-6a22-4692-ab81-96e166a00c38

Related records

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