CVE-2021-24171 Information

Description

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 locked\ extension within another locked\ 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8