CVE-2023-2416

Online Booking & Scheduling Calendar for WordPress by vcita <= 4.5 - Cross-Site Request Forgery to Account Logout

2023-06-02 00:00
Jonas Höbenreich

Strategic Overview

Status
Patched in 4.5.2
Affected Plugin
Online Booking & Scheduling Calendar for WordPress by vcita
Affected Version
<= 4.5
CVSS
5.4Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-2416
View all Online Booking & Scheduling Calendar for WordPress by vcita vulnerabilities

At a glance

CVE-2023-2416 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Online Booking & Scheduling Calendar for WordPress by vcita WordPress plugin, affecting versions <= 4.5. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.5.2; sites on affected versions should update now. Disclosed June 2023, reported by Jonas Höbenreich.

Vulnerability Overview

The Online Booking & Scheduling Calendar for WordPress by vcita plugin for WordPress is vulnerable to Cross-Site Request Forgery due to a missing nonce check on the vcita_logout_callback function in versions up to, and including, 4.5. This makes it possible for unauthenticated to logout a vctia connected account which would cause a denial of service on the appointment scheduler, via a forged request granted they can trick a site user into performing an action such as clicking on a link.

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.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Online Booking & Scheduling Calendar for WordPress by vcita <= 4.5 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Online Booking & Scheduling Calendar for WordPress by vcita the fix is 4.5.2: builds <= 4.5 are affected, anything from 4.5.2 onward is not.

Remediation

Update to version 4.5.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Online Booking & Scheduling Calendar for WordPress by vcita: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Online Booking & Scheduling Calendar for WordPress by vcita 4.5.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-2416https://www.wordfence.com/threat-intel/vulnerabilities/id/f434585c-8533-4788-b0bc-5650390c29a8https://nvd.nist.gov/vuln/detail/CVE-2023-2416

Related records

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