CVE-2023-45649

Appointment Hour Booking <= 1.4.23 - Missing Authorization to Double Booking

2023-10-11 00:00

Strategic Overview

Status: Patched in 1.4.24
Affected Plugin: Appointment Hour Booking – Booking Calendar
Affected Version: <= 1.4.23
CVSS: 5.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-45649

View all Appointment Hour Booking – Booking Calendar vulnerabilities

At a glance

CVE-2023-45649 is a medium-severity Missing Authorization vulnerability in the Appointment Hour Booking WordPress plugin, affecting versions <= 1.4.23. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.4.24; sites on affected versions should update now. Disclosed October 2023, reported by konagash.

Vulnerability Overview

The Appointment Hour Booking plugin for WordPress is vulnerable to unauthorized double booking due to insufficient validation on the data_management() function in versions up to, and including, 1.4.23. This makes it possible for unauthenticated attackers to make double bookings.

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

Appointment Hour Booking <= 1.4.23 carries this weakness at data_management(), and reaching it 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 Appointment Hour Booking the fix is 1.4.24: builds <= 1.4.23 are affected, anything from 1.4.24 onward is not.

Remediation

Update to version 1.4.24, 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: Appointment Hour Booking 1.4.24 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-45649 https://www.wordfence.com/threat-intel/vulnerabilities/id/823fee99-5c91-456d-9a09-f942f42aa8fa https://nvd.nist.gov/vuln/detail/CVE-2023-45649

Related records

Same weakness class

Other vulnerabilities in Appointment Hour Booking – Booking Calendar

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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