Freemius SDK <= 2.5.9 - Reflected Cross-Site Scripting via fs_request_get

2023-07-18 00:00

Rafie Muhammad

Strategic Overview

Status

Patched in 1.0.5

Affected PluginNOWPayments for WooCommerce – Crypto Payment Gateway

Affected Version<= 1.0.4

CVSS6.1Medium

CVECVE-2023-33999

View all NOWPayments for WooCommerce – Crypto Payment Gateway vulnerabilities

Vulnerability Overview

The Freemius SDK for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘fs_request_get’ function in versions up to, and including, 2.5.9 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Technical Analysis

REMEDIATION: Update to version 3.4.2, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2023-33999 https://www.wordfence.com/threat-intel/vulnerabilities/id/5253fe2b-040b-417c-b257-0cb59ee5aa6e