CVE-2023-1843

Metform Elementor Contact Form Builder <= 3.3.0 - Missing Authorization

2023-05-04 00:00
Marco Wotschka

Strategic Overview

Status
Patched in 3.3.2
Affected Plugin
MetForm – Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder for Elementor
Affected Version
<= 3.3.0
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2023-1843
View all MetForm – Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder for Elementor vulnerabilities

At a glance

CVE-2023-1843 is a medium-severity Missing Authorization vulnerability in the MetForm WordPress plugin, affecting versions <= 3.3.0. 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 3.3.2; sites on affected versions should update now. Disclosed May 2023, reported by Marco Wotschka.

Vulnerability Overview

The Metform Elementor Contact Form Builder plugin for WordPress is vulnerable to unauthorized permalink structure update due to a missing capability check on the permalink_setup function in versions up to, and including, 3.3.0. This makes it possible for unauthenticated attackers to change the permalink structure.

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 MetForm <= 3.3.0 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 MetForm the fix is 3.3.2: builds <= 3.3.0 are affected, anything from 3.3.2 onward is not.

Remediation

Update to version 3.3.2, 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: MetForm 3.3.2 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-1843https://www.wordfence.com/threat-intel/vulnerabilities/id/5db00eb6-3e05-42fa-bb84-2df4bcae3955https://nvd.nist.gov/vuln/detail/CVE-2023-1843

Related records

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