CVE-2022-4941

WCFM Membership <= 2.9.10 - Cross-Site Request Forgery

2023-04-05 00:00
Chloe Chamberland

Strategic Overview

Status
Patched in 2.10.0
Affected Plugin
WCFM Membership – WooCommerce Memberships for Multivendor Marketplace
Affected Version
<= 2.9.10
CVSS
6.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2022-4941
View all WCFM Membership – WooCommerce Memberships for Multivendor Marketplace vulnerabilities

At a glance

CVE-2022-4941 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the WCFM Membership WordPress plugin, affecting versions <= 2.9.10. It carries a CVSS score of 6.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.10.0; sites on affected versions should update now. Disclosed April 2023, reported by Chloe Chamberland.

Vulnerability Overview

The WCFM Membership plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.9.10 due to missing nonce checks on various AJAX actions. This makes it possible for unauthenticated attackers to perform a wide variety of actions such as modifying membership details, changing renewal information, controlling membership approvals, and more, via a forged request granted they can trick a site's administrator 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 WCFM Membership <= 2.9.10 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 WCFM Membership the fix is 2.10.0: builds <= 2.9.10 are affected, anything from 2.10.0 onward is not.

Remediation

Update to version 2.10.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to WCFM Membership: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WCFM Membership 2.10.0 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-4941https://www.wordfence.com/threat-intel/vulnerabilities/id/3758db41-a3c5-436a-bb9a-5886f10d1519https://nvd.nist.gov/vuln/detail/CVE-2022-4941

Related records

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