ntopng 1.2.0 Cross Site Scripting

`ntopng 1.2.0 XSS injection using monitored network traffic  
  
ntopng is the next generation version of the original ntop, a network   
traffic probe and monitor that shows the network usage, similar to what   
the popular top Unix command does.  
  
The web-based frontend of the software is vulnerable to injection of   
script code via forged HTTP Host: request header lines in monitored   
network traffic.  
  
HTTP Host request header lines are extracted using nDPI traffic   
classification library and used without sanitization in several places   
in the frontend, e.g. the Host overview and specific subpages for each   
monitored host.  
  
The injected code might be used to execute javascript and to perform   
management actions with the user-rights of the current ntopng user,   
which can be used to disable the monitoring function or deletion of   
accounts making the monitoring system unusable.  
  
To give a coarse idea of the vulnerability the following python script   
can be used on the monitored network, afterwards the victim needs to   
browse to the Host overview / Host details in the ntopng frontend.  
  
import httplib  
  
conn = httplib.HTTPConnection("example.com")  
headers = {"Host": "<SCRIPT>alert(\"xss\")</SCRIPT>", "Accept":   
"text/plain"}  
conn.request("GET", "/", None, headers)  
r1 = conn.getresponse()  
print(r1.status, r1.reason)  
data1 = r1.read()  
  
Other users of the nDPI code might be affected as well.  
  
Steffen Bauch  
Twitter: @steffenbauch  
http://steffenbauch.de  
  
  
`