CVE-2021-24229

Patreon WordPress < 1.7.2 - Reflected XSS on patreon_save_attachment_patreon_level AJAX action

Severity Score

9.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Jetpack Scan team identified a Reflected Cross-Site Scripting via the patreon_save_attachment_patreon_level AJAX action of the Patreon WordPress plugin before 1.7.2. This AJAX hook is used to update the pledge level required by Patreon subscribers to access a given attachment. This action is accessible for user accounts with the ‘manage_options’ privilege (i.e.., only administrators). Unfortunately, one of the parameters used in this AJAX endpoint is not sanitized before being printed back to the user, so the risk it represents is the same as the previous XSS vulnerability.

El equipo de Jetpack Scan identificó una vulnerabilidad de tipo Cross-Site Scripting Reflejado por medio de la acción AJAX patreon_save_attachment_patreon_level del plugin Patreon WordPress versiones anteriores a 1.7.2. Este enlace AJAX es utilizado para actualizar el nivel de compromiso requerido por los suscriptores de Patreon para acceder a un archivo adjunto determinado. Esta acción es accesible para cuentas de usuario con el privilegio "manage_options" (es decir, solo administradores). Desafortunadamente, uno de los parámetros utilizados en este endpoint AJAX no es saneado antes de volver a imprimirse al usuario, por lo que el riesgo que representa es el mismo que el de la vulnerabilidad XSS previo

*Credits: George Stephanis, Fioravante Souza, Miguel Neto, Benedict Singer and Marc Montpas

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-14 CVE Reserved
2021-03-26 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-08-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source
https://wpscan.com/vulnerability/001755c4-add3-4566-a022-ab1f83546c1f	Third Party Advisory

URL	Date	SRC
https://jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Patreon Search vendor "Patreon"		Patreon Wordpress Search vendor "Patreon" for product "Patreon Wordpress"				< 1.7.2 Search vendor "Patreon" for product "Patreon Wordpress" and version " < 1.7.2"		wordpress		Affected