Vulnerabilities > CVE-2019-1109 - Improper Input Validation vulnerability in Microsoft Office and Office 365

047910
CVSS 9.1 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
microsoft
CWE-20
critical
nessus
NVD
Published: 2019-07-15
Updated: 2019-07-19

Summary

A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office documents.An attacker who successfully exploited this vulnerability could read or write information in Office documents.The security update addresses the vulnerability by correcting the way that Microsoft Office Javascript verifies trusted web pages., aka 'Microsoft Office Spoofing Vulnerability'.

Vulnerable Configurations

Part Description Count
Application
Microsoft
5

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_A633651BB30911E9A87FA4BADB2F4699.NASL
    descriptionOn some Intel processors utilizing speculative execution a local process may be able to infer stale information from microarchitectural buffers to obtain a memory disclosure. Impact : An attacker may be able to read secret data from the kernel or from a process when executing untrusted code (for example, in a web browser).
    last seen2020-06-01
    modified2020-06-02
    plugin id127550
    published2019-08-12
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127550
    titleFreeBSD : FreeBSD -- Microarchitectural Data Sampling (MDS) (a633651b-b309-11e9-a87f-a4badb2f4699)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(127550);
  script_version("1.3");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2018-1212", "CVE-2018-1213", "CVE-2019-1109");
  script_xref(name:"FreeBSD", value:"SA-19:07.mds");

  script_name(english:"FreeBSD : FreeBSD -- Microarchitectural Data Sampling (MDS) (a633651b-b309-11e9-a87f-a4badb2f4699)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"On some Intel processors utilizing speculative execution a local
process may be able to infer stale information from microarchitectural
buffers to obtain a memory disclosure. Impact : An attacker may be
able to read secret data from the kernel or from a process when
executing untrusted code (for example, in a web browser)."
  );
  # https://vuxml.freebsd.org/freebsd/a633651b-b309-11e9-a87f-a4badb2f4699.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4fd5a3d9"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1212");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:FreeBSD");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info", "Settings/ParanoidReport");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


if (report_paranoia < 2) audit(AUDIT_PARANOID);

flag = 0;

if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=12.0<12.0_5")) flag++;
if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=11.2<11.2_10")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS19_JUL_OFFICE.NASL
    descriptionThe Microsoft Office Products are missing security updates. They are, therefore, affected by multiple vulnerabilities: - An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. (CVE-2019-1084) - A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office documents. An attacker who successfully exploited this vulnerability could read or write information in Office documents. (CVE-2019-1109) - A remote code execution vulnerability exists in Microsoft Excel 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. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Excel. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.(CVE-2019-1111) - An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data. To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it. An attacker must know the memory address location where the object was created. (CVE-2019-1112) The update addresses the vulnerability by changing the way certain Excel functions handle objects in memory.
    last seen2020-06-01
    modified2020-06-02
    plugin id126583
    published2019-07-09
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/126583
    titleSecurity Updates for Microsoft Office Products (July 2019)
    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(126583);
  script_version("1.8");
  script_cvs_date("Date: 2020/01/30");

  script_cve_id(
    "CVE-2019-1084",
    "CVE-2019-1109",
    "CVE-2019-1111",
    "CVE-2019-1112"
  );
  script_bugtraq_id(
    108415,
    108965,
    108974,
    108975
  );
  script_xref(name:"MSKB", value:"4462224");
  script_xref(name:"MSKB", value:"4464558");
  script_xref(name:"MSKB", value:"4464543");
  script_xref(name:"MSKB", value:"4018375");
  script_xref(name:"MSKB", value:"4475514");
  script_xref(name:"MSKB", value:"4464534");
  script_xref(name:"MSKB", value:"4461539");
  script_xref(name:"MSFT", value:"MS19-4462224");
  script_xref(name:"MSFT", value:"MS19-4464558");
  script_xref(name:"MSFT", value:"MS19-4464543");
  script_xref(name:"MSFT", value:"MS19-4018375");
  script_xref(name:"MSFT", value:"MS19-4475514");
  script_xref(name:"MSFT", value:"MS19-4464534");
  script_xref(name:"MSFT", value:"MS19-4461539");

  script_name(english:"Security Updates for Microsoft Office Products (July 2019)");

  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. They are, therefore, affected by multiple vulnerabilities:

  - An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having
    non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with
    invalid display names, which, when added to conversations, remain invisible. (CVE-2019-1084)

  - A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making
    a request to Office documents. An attacker who successfully exploited this vulnerability could read or write
    information in Office documents. (CVE-2019-1109)

  - A remote code execution vulnerability exists in Microsoft Excel 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. Exploitation of the vulnerability
    requires that a user open a specially crafted file with an affected version of Microsoft Excel. In an email attack
    scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and
    convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage
    a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to
    exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker
    would have to convince users to click a link, typically by way of an enticement in an email or instant message, and
    then convince them to open the specially crafted file.(CVE-2019-1111)    

  - An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory.
    An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data.
    To exploit the vulnerability, an attacker could craft a special document file and then convince the user to open it.
    An attacker must know the memory address location where the object was created. (CVE-2019-1112)
  
  The update addresses the vulnerability by changing the way certain Excel functions handle objects in memory.");
  # https://support.microsoft.com/en-ca/help/4462224/security-update-for-office-2010-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?81a69f81");
  # https://support.microsoft.com/en-ca/help/4464558/security-update-for-office-2013-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2f7d2259");
  # https://support.microsoft.com/en-ca/help/4464543/security-update-for-office-2013-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7286ed4c");
  # https://support.microsoft.com/en-ca/help/4018375/security-update-for-office-2013-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?538ee05c");
  # https://support.microsoft.com/en-ca/help/4475514/security-update-for-office-2016-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?425ea54c");
  # https://support.microsoft.com/en-ca/help/4464534/security-update-for-office-2016-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ed5fd566");
  # https://support.microsoft.com/en-ca/help/4461539/security-update-for-office-2016-july-9-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d71dc7d8");
  # https://docs.microsoft.com/en-us/officeupdates/update-history-office365-proplus-by-date
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c6fc9b1b");
  # https://docs.microsoft.com/en-us/officeupdates/update-history-office-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?42ab6861");
  # https://support.office.com/en-us/article/install-office-updates-2ab296f3-7f03-43a2-8e50-46de917611c5
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7b126882");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB4462224
  -KB4464558
  -KB4464543
  -KB4018375
  -KB4475514
  -KB4464534
  -KB4461539

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic
updates are enabled or open any office app and manually perform an
update.");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1111");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/09");

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

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 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');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS19-07';
kbs = make_list(
  '4462224', # Office 2010 SP2
  '4464558', # Office 2013 SP1
  '4464543', # Office 2013 SP1
  '4018375', # Office 2013 SP1
  '4475514', # Office 2016
  '4464534', # Office 2016
  '4461539'  # 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_vers = hotfix_check_office_version();

# Office 2010 SP2
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';

    path = hotfix_get_officeprogramfilesdir(officever:"14.0");
    path = hotfix_append_path(path:path, value:"Microsoft Office\Office14");
    kb = "4462224";
    file = "graph.exe";
    version = "14.0.7235.5000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

# Office 2013 SP1
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';

    path = hotfix_get_officecommonfilesdir(officever:"15.0");
    path = hotfix_append_path(path:path, value:"Microsoft Shared\Office15");
    kb = "4464558";
    file = "mso.dll";
    version = "15.0.5153.1000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_get_officeprogramfilesdir(officever:"15.0");
    path = hotfix_append_path(path:path, value:"Microsoft Office\Office15");
    kb = "4464543";
    file = "graph.exe";
    version = "15.0.5153.1000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    path = hotfix_get_officeprogramfilesdir(officever:"15.0");
    path = hotfix_append_path(path:path, value:"Microsoft Office\Office15");
    kb = "4018375";
    file = "osf.dll";
    version = "15.0.5153.1000";
    if (hotfix_check_fversion(file:file, version:version, path:path, kb:kb, bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;
  }
}

# Office 2016
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";
    prod2019 = "Microsoft Office 2019";

    path = hotfix_get_officecommonfilesdir(officever:"16.0");
    mso_dll_path = hotfix_append_path(path:path, value:"Microsoft Shared\Office16");

    path = hotfix_get_officeprogramfilesdir(officever:"16.0");
    osf_dll_path = hotfix_append_path(path:path, value:"Microsoft Office\Office16");

    path = hotfix_get_officeprogramfilesdir(officever:"16.0");
    graph_exe_path = hotfix_append_path(path:path, value:"Microsoft Office\Office16");

    path = hotfix_get_officeprogramfilesdir(officever:"16.0");
    c2r_path = hotfix_append_path(path: path, value : "Microsoft Office\root\Office16");
    
    # MSI osf.dll
    if (hotfix_check_fversion(file:"osf.dll", version:"16.0.4873.1000", channel:"MSI", channel_product:"Office", path:osf_dll_path, kb:"4464534", bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    # MSI mso99lwin32client.dll
    if (hotfix_check_fversion(file:"mso99lwin32client.dll", version:"16.0.4873.1000", channel:"MSI", channel_product:"Office", path:mso_dll_path, kb:"4475514", bulletin:bulletin, product:prod) == HCF_OLDER)
      vuln = TRUE;

    # MSI graph.exe
    if (hotfix_check_fversion(file:"graph.exe", version:"16.0.4873.1000", channel:"MSI", channel_product:"Office", path:graph_exe_path, kb:"4461539", bulletin:bulletin, product:prod) == HCF_OLDER ||
      # C2R
      hotfix_check_fversion(file:"graph.exe", version:"16.0.9126.2428", channel:"Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"graph.exe", version:"16.0.10730.20360", channel:"Deferred", channel_version:"1808", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"graph.exe", version:"16.0.11328.20368", channel:"Deferred", channel_version:"1902", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"graph.exe", version:"16.0.11328.20368", channel:"First Release for Deferred", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      hotfix_check_fversion(file:"graph.exe", version:"16.0.11727.20244", channel:"Current", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod) == HCF_OLDER ||
      # 2019
      hotfix_check_fversion(file:"graph.exe", version:"16.0.11727.20244", channel:"2019 Retail", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod2019) == HCF_OLDER ||
      hotfix_check_fversion(file:"graph.exe", version:"16.0.10348.20020", channel:"2019 Volume", channel_product:"Office", path:c2r_path, bulletin:bulletin, product:prod2019) == HCF_OLDER
    
    )
    vuln = TRUE;
  }
}

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');
}

References