CVE-2021-24171

WooCommerce Upload Files < 59.4 - Unauthenticated Arbitrary File Upload

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The WooCommerce Upload Files WordPress plugin before 59.4 ran a single sanitization pass to remove blocked extensions such as .php. It was possible to bypass this and upload a file with a PHP extension by embedding a "blocked" extension within another "blocked" extension in the "wcuf_file_name" parameter. It was also possible to perform a double extension attack and upload files to a different location via path traversal using the "wcuf_current_upload_session_id" parameter.

El plugin de WordPress WooCommerce Upload Files versiones anteriores a 59.4 ejecutó una sola pasada de saneamiento para eliminar extensiones bloqueadas como .php. Era posible omitir esto y cargar un archivo con una extensión PHP insertando una extensión "blocked" dentro de otra extensión "blocked" en el parámetro "wcuf_file_name". También fue posible llevar a cabo un ataque de extensión doble y subir archivos a una ubicación diferente por medio del salto de ruta usando el parámetro "wcuf_current_upload_session_id"

*Credits: Ramuel Gall

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

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
2021-03-04 CVE Published
2023-12-20 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-434: Unrestricted Upload of File with Dangerous Type

CAPEC

References (2)

URL	Tag	Source
https://wpscan.com/vulnerability/ed4288a1-f7e4-455f-b765-5ac343f87194	Third Party Advisory
https://www.wordfence.com/blog/2021/03/critical-vulnerability-patched-in-woocommerce-upload-files	Third Party Advisory

URL	Date	SRC

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
Woocommerce Search vendor "Woocommerce"		Upload Files Search vendor "Woocommerce" for product "Upload Files"				< 59.4 Search vendor "Woocommerce" for product "Upload Files" and version " < 59.4"		wordpress		Affected