MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) - Nessus

High Plugin ID: 63372

This page contains detailed information about the MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 63372
Name: MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated)
Filename: smb_kb2794220.nasl
Vulnerability Published: 2012-12-28
This Plugin Published: 2013-01-02
Last Modification Time: 2018-11-15
Plugin Version: 1.18
Plugin Type: local
Plugin Family: Windows
Dependencies: smb_hotfixes.nasl
Required KB Items [?]: SMB/ProductName, SMB/Registry/Enumerated, SMB/WindowsVersion

Vulnerability Information

Severity: High
Vulnerability Published: 2012-12-28
Patch Published: 2012-12-31
CVE [?]: CVE-2012-4792
CPE [?]: cpe:/a:microsoft:ie, cpe:/o:microsoft:windows
Exploited by Malware: True

Synopsis

The remote host has a web browser installed that is affected by a remote code execution vulnerability.

Description

The remote host is missing the workaround referenced in KB 2794220 (Microsoft 'Fix it' 50971). This workaround mitigates a use-after-free vulnerability in Internet Explorer. Without this workaround enabled, an attacker could exploit this vulnerability by tricking a user into viewing a maliciously crafted web page, resulting in arbitrary code execution. This vulnerability is being actively exploited in the wild.

Note that the Microsoft 'Fix it' solution is effective only if the latest available version of 'mshtml.dll' is installed.

This plugin has been deprecated due to the publication of MS13-008. Microsoft has released updates that make the workarounds unnecessary. To check for those, use Nessus plugin ID 63522.

Solution

Apply Microsoft 'Fix it' 50971.

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) vulnerability:

Metasploit: exploit/windows/browser/ie_cbutton_uaf
[MS13-008 Microsoft Internet Explorer CButton Object Use-After-Free Vulnerability]
Exploit-DB: exploits/windows/remote/23754.rb
[EDB-23754: Microsoft Internet Explorer - CDwnBindInfo Object Use-After-Free (Metasploit)]
Exploit-DB: exploits/windows/remote/23785.rb
[EDB-23785: Microsoft Internet Explorer - CButton Object Use-After-Free (Metasploit)]
GitHub: https://github.com/LyleMi/dom-vuln-db
[CVE-2012-4792]
GitHub: https://github.com/WizardVan/CVE-2012-4792
[CVE-2012-4792: CVE-2012-4792 simple calc exploitation]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:M/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	9.3 (High)
Impact Subscore:	10.0
Exploitability Subscore:	8.6
CVSS Temporal Score:	8.1 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.1 (High)

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Plugin Source

#@DEPRECATED
#
# Disabled on 2013/01/14. Deprecated by smb_nt_ms13-008.nasl

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(63372);
  script_version("1.18");
  script_cvs_date("Date: 2018/11/15 20:50:28");

  script_cve_id("CVE-2012-4792");
  script_bugtraq_id(57070);
  script_xref(name:"CERT", value:"154201");
  script_xref(name:"EDB-ID", value:"23754");
  script_xref(name:"MSKB", value:"2794220");

  script_name(english:"MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated)");
  script_summary(english:"Checks if 'Fix it' 50971 is in use.");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote host has a web browser installed that is affected by a
remote code execution vulnerability."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The remote host is missing the workaround referenced in KB 2794220
(Microsoft 'Fix it' 50971).  This workaround mitigates a use-after-free
vulnerability in Internet Explorer.  Without this workaround enabled, an
attacker could exploit this vulnerability by tricking a user into
viewing a maliciously crafted web page, resulting in arbitrary code
execution.  This vulnerability is being actively exploited in the wild.

Note that the Microsoft 'Fix it' solution is effective only if the latest
available version of 'mshtml.dll' is installed. 

This plugin has been deprecated due to the publication of MS13-008. 
Microsoft has released updates that make the workarounds unnecessary. 
To check for those, use Nessus plugin ID 63522.");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/2794220");
  script_set_attribute(attribute:"solution", value:"Apply Microsoft 'Fix it' 50971.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'MS13-008 Microsoft Internet Explorer CButton Object Use-After-Free Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2012/12/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/12/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:ie");

  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated", "SMB/WindowsVersion", "SMB/ProductName");
  script_require_ports(139, 445);

  exit(0);
}

exit(0, "This plugin has been deprecated.  Use smb_nt_ms13-008.nasl (plugin ID 63522) instead.");

include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit('SMB/WindowsVersion');
if (hotfix_check_sp_range(xp:'3', win2003:'2', vista:'2', win7:'0,1') <= 0)
  audit(AUDIT_OS_SP_NOT_VULN);
if (hotfix_check_server_core() == 1)
  audit(AUDIT_WIN_SERVER_CORE);

ie_ver = hotfix_check_ie_version();
if (ie_ver !~ "^[678]\.") audit(AUDIT_INST_VER_NOT_VULN, 'IE', ie_ver);

port = kb_smb_transport();
vuln = 0;

registry_init();
handle = registry_hive_connect(hive:HKEY_LOCAL_MACHINE, exit_on_fail:TRUE);

systemroot = hotfix_get_systemroot();
if(!systemroot) audit(AUDIT_FN_FAIL, 'hotfix_get_systemroot');

guid = '{a1447a51-d8b1-4e93-bb19-82bd20da6fd2}';
path = get_registry_value(handle:handle, item:"SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\InstalledSDB\" + guid);

if (isnull(path))
  path = systemroot + "\AppPatch\Custom\" + guid + '.sdb';

RegCloseKey(handle:handle);
close_registry(close:FALSE);

# Now make sure the file is in place
if (hotfix_file_exists(path:path))
  vuln = FALSE;
else
  vuln = TRUE;

hotfix_check_fversion_end();

if (!vuln)
  audit(AUDIT_HOST_NOT, 'affected');

if (report_verbosity > 0)
{
  report =
    '\nNessus determined the Microsoft \'Fix it\' solution is not in use because' +
    '\nthe following file was not found :\n\n' +
    path + '\n';
  security_hole(port:port, extra:report);
}
else security_hole(port);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/smb_kb2794220.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_kb2794220.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/smb_kb2794220.nasl

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How to Run

Here is how to run the MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Windows plugin family.
On the right side table select MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) plugin ID 63372.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl smb_kb2794220.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a smb_kb2794220.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - smb_kb2794220.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state smb_kb2794220.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

57070

MSKB | Microsoft Knowledge Base:

2794220

CERT | Computer Emergency Response Team:

154201

See also:

Similar and related Nessus plugins:

63522 - MS13-008: Security Update for Internet Explorer (2799329)
47045 - MS KB2219475: Windows Help Center hcp:// Protocol Handler Arbitrary Code Execution
47750 - MS KB2286198: Windows Shell Shortcut Icon Parsing Arbitrary Code Execution (EASYHOOKUP)
49274 - MS KB2401593: Microsoft Outlook Web Access (OWA) CSRF
51587 - MS KB2488013: Internet Explorer CSS Import Rule Processing Arbitrary Code Execution
62224 - MS KB2755399: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer 10
64508 - MS KB2811522: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer 10
66423 - MS KB2820197: Update Rollup for ActiveX Kill Bits
71325 - MS KB2907997: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer 10
72286 - MS KB2929825: Update for Vulnerability in Adobe Flash Player in Internet Explorer
73742 - MS KB2961887: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
73865 - MS KB2962393: Update for Vulnerability in Juniper Networks Windows In-Box Junos Pulse Client (Heartbleed)
76416 - MS KB2974008: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
77170 - MS KB2982794: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
77580 - MS KB2987114: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
78444 - MS KB3001237: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
79145 - MS KB3004150: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
78447 - MS KB3009008: Vulnerability in SSL 3.0 Could Allow Information Disclosure (POODLE)
81209 - MS KB3021953: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
81046 - MS KB3035034: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
81732 - MS KB3044132: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
82823 - MS KB3049508: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
83369 - MS KB3061904: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
84058 - MS KB3062760: Update for Vulnerability in Juniper Networks Windows In-Box Junos Pulse Client (FREAK)
84052 - MS KB3065820: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
84645 - MS KB3065823: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
84367 - MS KB3074219: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
84809 - MS KB3079777: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
85329 - MS KB3087916: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer
86469 - MS KB3105216: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer and Microsoft Edge
87671 - MS KB3132372: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer and Microsoft Edge
100051 - MS Security Advisory 4022344: Security Update for Microsoft Malware Protection Engine
35634 - MS KB960715: Cumulative Security Update of ActiveX Kill Bits

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_kb2794220.nasl version 1.18. For more plugins, visit the Nessus Plugin Library.

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MS KB2794220: Vulnerability in Internet Explorer Could Allow Remote Code Execution (deprecated) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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