Vulnerabilities > CVE-2017-11854 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Office, Office Compatibility Pack and Word

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
microsoft
CWE-119
nessus
NVD
Published: 2017-11-15
Updated: 2024-11-21

Summary

Microsoft Word 2007 Service Pack 3, Microsoft Word 2010 Service Pack 2, Microsoft Office 2010 Service Pack 2, and Microsoft Office Compatibility Pack Service Pack 3 allow an attacker to run arbitrary code in the context of the current user by failing to properly handle objects in memory, aka "Microsoft Word Memory Corruption Vulnerability".

Vulnerable Configurations

Part Description Count
Application
Microsoft
4

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS17_NOV_OFFICE.NASL
    descriptionThe Microsoft Office Products are missing security updates. It is, therefore, affected by multiple vulnerabilities : - Microsoft has released an update for Microsoft Office that provides enhanced security as a defense-in-depth measure. - A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2017-11854) - A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. (CVE-2017-11882)
    last seen2020-06-01
    modified2020-06-02
    plugin id104557
    published2017-11-14
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104557
    titleSecurity Updates for Microsoft Office Products (November 2017)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#

include("compat.inc");

if (description)
{
  script_id(104557);
  script_version("1.15");
  script_cvs_date("Date: 2019/11/12");

  script_cve_id("CVE-2017-11854", "CVE-2017-11882");
  script_bugtraq_id(101746, 101757);
  script_xref(name:"MSKB", value:"3162047");
  script_xref(name:"MSKB", value:"4011268");
  script_xref(name:"MSKB", value:"4011604");
  script_xref(name:"MSKB", value:"4011262");
  script_xref(name:"MSKB", value:"4011618");
  script_xref(name:"MSFT", value:"MS17-3162047");
  script_xref(name:"MSFT", value:"MS17-4011268");
  script_xref(name:"MSFT", value:"MS17-4011604");
  script_xref(name:"MSFT", value:"MS17-4011262");
  script_xref(name:"MSFT", value:"MS17-4011618");
  script_xref(name:"IAVA", value:"2017-A-0337");

  script_name(english:"Security Updates for Microsoft Office Products (November 2017)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Office Products are affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office Products are missing security updates.
It is, therefore, affected by multiple vulnerabilities :

  - Microsoft has released an update for Microsoft Office that
    provides enhanced security as a defense-in-depth measure.

  - A remote code execution vulnerability exists in Microsoft Office
    software when the software fails to properly handle objects in
    memory. An attacker who successfully exploited the vulnerability
    could run arbitrary code in the context of the current user. If
    the current user is logged on with administrative user rights, an
    attacker could take control of the affected system. An attacker
    could then install programs; view, change, or delete data; or
    create new accounts with full user rights. Users whose accounts
    are configured to have fewer user rights on the system could be
    less impacted than users who operate with administrative user
    rights. (CVE-2017-11854)

  - A remote code execution vulnerability exists in Microsoft Office
    software when the software fails to properly handle objects in
    memory. An attacker who successfully exploited the vulnerability
    could run arbitrary code in the context of the current user. If
    the current user is logged on with administrative user rights, an
    attacker could take control of the affected system. An attacker
    could then install programs; view, change, or delete data; or
    create new accounts with full user rights. Users whose accounts
    are configured to have fewer user rights on the system could be
    less impacted than users who operate with administrative user
    rights. (CVE-2017-11882)");
  # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV170020
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0f1b55d1");
  # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11854
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c504489");
  # https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11882
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?df348bb4");
  # https://support.microsoft.com/en-us/help/3162047/descriptionofthesecurityupdateforoffice2013november14-2017
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4a238ff7");
  # https://support.microsoft.com/en-us/help/4011276/descriptionofthesecurityupdatefor2007microsoftofficesuitenovember14-20
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b3ad665b");
  # https://support.microsoft.com/en-us/help/4011262/descriptionofthesecurityupdateforoffice2016november14-2017
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ddf439cf");
  # https://support.microsoft.com/en-us/help/2553204/description-of-the-security-update-for-office-2010-november-14-2017
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1df91bdd");
  # https://support.microsoft.com/en-us/help/4011268/descriptionofthesecurityupdateforoffice2010november14-2017
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5199de26");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released security updates for Microsoft Office Products.");
  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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-11882");

  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:'Microsoft Office CVE-2017-11882');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("office_installed.nasl", "smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

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");
include("install_func.inc");

global_var vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS17-11";
kbs = make_list(
  '4011604', # Office 2007 SP3
  '4011618', # Office 2010 SP2
  '4011268', # Office 2010 SP2
  '3162047', # Office 2013 SP1
  '4011262'  # Office 2016
);

if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated", exit_code:1);

vuln = FALSE;
port = kb_smb_transport();

######################################################################
# Office 2007, 2010, 2013, 2016
######################################################################
function perform_office_checks()
{
  local_var office_vers, office_sp, common_path, path, prod, file, kb;
  office_vers = hotfix_check_office_version();

  ####################################################################
  # Office 2007 SP3 Checks
  ####################################################################
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      prod = "Microsoft Office 2007 SP3";
      common_path = hotfix_get_officecommonfilesdir(officever:"12.0");

      path = hotfix_append_path(
               path  : common_path,
               value : "Microsoft Shared\Equation"
      );
      if (hotfix_check_fversion(file:"eqnedt32.exe", version:"2017.8.14.0", path:path, kb:"4011604", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ####################################################################
  # Office 2010 SP2 Checks
  ####################################################################
  if (office_vers["14.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 2)
    {
      prod = "Microsoft Office 2010 SP2";
      common_path = hotfix_get_officecommonfilesdir(officever:"14.0");

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Equation"
      );
      if (hotfix_check_fversion(file:"eqnedt32.exe", version:"2017.8.14.0", path:path, kb:"4011618", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Office14"
      );
      if (hotfix_check_fversion(file:"wwlibcxm.dll", version:"14.0.7190.5000", path:path, kb:"4011268", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ####################################################################
  # Office 2013 SP1 Checks
  ####################################################################
  if (office_vers["15.0"])
  {
    office_sp = get_kb_item("SMB/Office/2013/SP");
    if (!isnull(office_sp) && office_sp == 1)
    {
      prod = "Microsoft Office 2013 SP1";
      common_path = hotfix_get_officecommonfilesdir(officever:"15.0");

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Equation"
      );
      if (hotfix_check_fversion(file:"eqnedt32.exe", version:"2017.8.14.0", path:path, kb:"3162047", bulletin:bulletin, product:prod) == HCF_OLDER)
        vuln = TRUE;
    }
  }

  ####################################################################
  # Office 2016 Checks
  ####################################################################
  if (office_vers["16.0"])
  {
    office_sp = get_kb_item("SMB/Office/2016/SP");
    if (!isnull(office_sp) && office_sp == 0)
    {
      prod = "Microsoft Office 2016";
      common_path = hotfix_get_officecommonfilesdir(officever:"16.0");

      path = hotfix_append_path(
        path  : common_path,
        value : "Microsoft Shared\Equation"
      );
      kb   = "4011262";
      file = "eqnedt32.exe";
      if (
        hotfix_check_fversion(file:file, version:"2017.8.14.0", channel:"MSI", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2017.8.14.0", channel:"Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2017.8.14.0", channel:"Deferred", channel_version:"1705", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2017.8.14.0", channel:"First Release for Deferred", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER ||
        hotfix_check_fversion(file:file, version:"2017.8.14.0", channel:"Current", channel_product:"Office", path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER
      )
        vuln = TRUE;
    }
  }
}

######################################################################
# MAIN
######################################################################
perform_office_checks();

if (vuln)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS17_NOV_OFFICE_COMPATIBILITY.NASL
    descriptionThe Microsoft Office Compatibility SP3 are missing security updates. It is, therefore, affected by multiple vulnerabilities : - A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2017-11854, CVE-2017-11878) - A security feature bypass vulnerability exists in Microsoft Office software by not enforcing macro settings on an Excel document. The security feature bypass by itself does not allow arbitrary code execution. To successfully exploit the vulnerability, an attacker would have to embed a control in an Excel worksheet that specifies a macro should be run. (CVE-2017-11877)
    last seen2020-06-01
    modified2020-06-02
    plugin id104558
    published2017-11-14
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104558
    titleSecurity Updates for Microsoft Office Compatibility SP3 (November 2017)
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS17_NOV_WORD.NASL
    descriptionThe Microsoft Office Products are missing a security update. It is, therefore, affected by the following vulnerability : - A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2017-11854)
    last seen2020-06-01
    modified2020-06-02
    plugin id104562
    published2017-11-14
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104562
    titleSecurity Updates for Microsoft Word Products (November 2017)

References