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WordPress WP Super Edit 2.5.4 Arbitrary File Upload

WordPress WP Super Edit 2.5.4 Arbitrary File Upload
Posted May 6, 2021
Authored by h4shur

WordPress WP Super Edit plugin version 2.5.4 suffers from an arbitrary file upload vulnerability.

tags | exploit, arbitrary, file upload
SHA-256 | c19dad04d0cbe3d7d7fae69d5db017f3d1ca56e8ec4f228cbbe8e1c65b228443

WordPress WP Super Edit 2.5.4 Arbitrary File Upload

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# Title: Wordpress Plugin WP Super Edit 2.5.4 - Remote File Upload
# Author: h4shur
# date: 2021-05-06
# Vendor Homepage: https://wordpress.org
# Software Link: https://wordpress.org/plugins/wp-super-edit/
# Version : 2.5.4 and earlier
# Tested on: Windows 10 & Google Chrome
# Category : Web Application Bugs
# Dork :
# inurl:"wp-content/plugins/wp-super-edit/superedit/"
# inurl:"wp-content/plugins/wp-super-edit/superedit/tinymce_plugins/mse/fckeditor/editor/filemanager/upload/"


### Note:

# 1. Technical Description:
This plugin allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Uploaded files represent a significant risk to applications. The first step in many attacks is to get some code to the system to be attacked. Then the attack only needs to find a way to get the code executed. Using a file upload helps the attacker accomplish the first step.The consequences of unrestricted file upload can vary, including complete system takeover, an overloaded file system or database, forwarding attacks to back-end systems, client-side attacks, or simple defacement. It depends on what the application does with the uploaded file and especially where it is stored.

# 2. Technical Description:
WordPress Plugin "wp-super-edit" allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This vulnerability is caused by FCKeditor in this plugin. Uploaded files represent a significant risk to applications. The first step in many attacks is to get some code to the system to be attacked. Then the attack only needs to find a way to get the code executed. Using a file upload helps the attacker accomplish the first step. The consequences of unrestricted file upload can vary, including complete system takeover, an overloaded file system or database, forwarding attacks to back-end systems, client-side attacks, or simple defacement. It depends on what the application does with the uploaded file and especially where it is stored.

### POC:

* Exploit 1 : site.com/wp-content/plugins/wp-super-edit/superedit/tinymce_plugins/mse/fckeditor/editor/filemanager/browser/default/browser.html
* Exploit 2 : site.com/wp-content/plugins/wp-super-edit/superedit/tinymce_plugins/mse/fckeditor/editor/filemanager/browser/default/connectors/test.html
* Exploit 3 : site.com/wp-content/plugins/wp-super-edit/superedit/tinymce_plugins/mse/fckeditor/editor/filemanager/upload/test.html
* Exploit 4 : site.com/wp-content/plugins/wp-super-edit/superedit/tinymce_plugins/mse/fckeditor/editor/filemanager/browser/default/frmupload.html
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