WordPress Plugin Comments Import & Export < 2.0.4 - CSV Injection

# Exploit Title: Wordpress Plugin Comments Import & Export < 2.0.4 - CSV Injection
# Google Dork: N/A
# Date: 2018-06-24
# Exploit Author: Bhushan B. Patil
# Software Link: https://wordpress.org/plugins/comments-import-export-woocommerce/
# Affected Version: 2.0.4 and before
# Category: Plugins and Extensions
# Tested on: WiN7_x64
# CVE: CVE-2018-11526

# 1. Application Description:
# Comments Import Export Plugin helps you to easily export and import Article and Product Comments in your store.

# 2. Technical Description:
# WordPress Comments Import & Export plugin version 2.0.4 and before are affected by the vulnerability Remote Command Execution
# using CSV Injection. This allows a public user to inject commands as a part of form fields and when a user with
# higher privilege exports the form data in CSV opens the file on their machine, the command is executed.

# 3. Proof Of Concept:
Enter the payload @SUM(1+1)*cmd|' /C calc'!A0 in the form fields and submit.
When high privileged user logs into the application to export form data in CSV and opens the file.
Formula gets executed and calculator will get popped in his machine.