Description

WordPress Plugin Flexible Checkout Fields for WooCommerce is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to perform otherwise restricted actions and subsequently inject new fields and scripts into the WooCommerce checkout page. WordPress Plugin Flexible Checkout Fields for WooCommerce version 2.3.1 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 2.3.4 or latest

References

https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-flexible-checkout-fields-for-woocommerce-plugin/

https://wordpress.org/support/topic/malicious-access-plugin-woo-add-to-carts-by-linkflowusers/

https://www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities/

https://plugins.svn.wordpress.org/flexible-checkout-fields/trunk/readme.txt

Related Vulnerabilities

WordPress Plugin GarageSale Cross-Site Scripting (1.2.2)

WordPress 4.5.x Multiple Vulnerabilities (4.5 - 4.5.30)

Squid Improper Encoding or Escaping of Output Vulnerability (CVE-2021-28662)

PostgreSQL Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-0061)

Atlassian Jira Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2021-43952)

Severity

High

Classification

CWE-264 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update Authentication Bypass