CVE-2020-36736

WooCommerce Checkout & Funnel Builder by CartFlows – Create High Converting Stores For WooCommerce <= 1.5.15 - Cross-Site Request Forgery Bypass

2020-09-26 00:00
Jerome Bruandet

Strategic Overview

Status
Patched in 1.5.16
Affected Plugin
CartFlows – Funnel Builder & Checkout Plugin for WooCommerce
Affected Version
< 1.5.16
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2020-36736
View all CartFlows – Funnel Builder & Checkout Plugin for WooCommerce vulnerabilities

At a glance

CVE-2020-36736 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the CartFlows WordPress plugin, affecting versions < 1.5.16. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.5.16; sites on affected versions should update now. Disclosed September 2020, reported by Jerome Bruandet.

Vulnerability Overview

The WooCommerce Checkout & Funnel Builder by CartFlows plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.5.15. This is due to missing or incorrect nonce validation on the export_json, import_json, and status_logs_file functions. This makes it possible for unauthenticated attackers to import/export settings and trigger logs showing via a forged request granted they can trick a site 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 CartFlows < 1.5.16 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 CartFlows the fix is 1.5.16: builds < 1.5.16 are affected, anything from 1.5.16 onward is not.

Remediation

Update to version 1.5.16, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to CartFlows: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: CartFlows 1.5.16 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-36736https://www.wordfence.com/threat-intel/vulnerabilities/id/0d98c849-4178-4cee-846b-2c136bc56dafhttps://nvd.nist.gov/vuln/detail/CVE-2020-36736

Related records

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