CVE-2023-3764

WooCommerce PDF Invoice Builder <= 1.2.90 - Cross-Site Request Forgery via Save

2023-08-11 00:00
Marco Wotschka

Strategic Overview

Status
Patched in 1.2.91
Affected Plugin
PDF Builder for WooCommerce. Create invoices,packing slips and more
Affected Version
<= 1.2.90
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-3764
View all PDF Builder for WooCommerce. Create invoices,packing slips and more vulnerabilities

At a glance

CVE-2023-3764 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the PDF Builder for WooCommerce. Create invoices,packing slips and more WordPress plugin, affecting versions <= 1.2.90. 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 1.2.91; sites on affected versions should update now. Disclosed August 2023, reported by Marco Wotschka.

Vulnerability Overview

The WooCommerce PDF Invoice Builder plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2.90. This is due to missing or incorrect nonce validation on the Save function. This makes it possible for unauthenticated attackers to make changes to invoices 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 PDF Builder for WooCommerce. Create invoices,packing slips and more <= 1.2.90 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 PDF Builder for WooCommerce. Create invoices,packing slips and more the fix is 1.2.91: builds <= 1.2.90 are affected, anything from 1.2.91 onward is not.

Remediation

Update to version 1.2.91, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to PDF Builder for WooCommerce. Create invoices,packing slips and more: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: PDF Builder for WooCommerce. Create invoices,packing slips and more 1.2.91 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-3764https://www.wordfence.com/threat-intel/vulnerabilities/id/ebf2e701-9f9b-4a78-a61a-0cf90cdd9755https://nvd.nist.gov/vuln/detail/CVE-2023-3764

Related records

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