Security Updates for Microsoft Office Products (November 2019) (macOS)

#
# (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(130968);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/11");

  script_cve_id("CVE-2019-1446", "CVE-2019-1448", "CVE-2019-1457");

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

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities");
  script_set_attribute(attribute:"description", value:
"The Microsoft Office application installed on the remote macOS or Mac OS X host is missing a security update. It is,
therefore, affected by multiple vulnerabilities:

  - 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-2019-1446)

  - 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 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-2019-1448)

  - 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. To exploit the vulnerability, an attacker would have
    to convince a user to open a specially crafted file with an affected version of Microsoft Office software.
    (CVE-2019-1457)");
  # https://docs.microsoft.com/en-gb/officeupdates/update-history-office-for-mac#november-12-2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2855635");
  # https://docs.microsoft.com/en-gb/officeupdates/release-notes-office-for-mac#november-12-2019-release
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?61531b21");
  # https://docs.microsoft.com/en-us/officeupdates/release-notes-office-2016-mac#november-2019-release
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?677ef24b");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Microsoft Office for Mac.");
  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:L/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-2019-1448");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2019-1457");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/11/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:outlook");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:onenote");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_office_installed.nbin");
  script_require_keys("Host/MacOSX/Version");
  script_require_ports("installed_sw/Microsoft Word", "installed_sw/Microsoft Excel", "installed_sw/Microsoft PowerPoint", "installed_sw/Microsoft OneNote", "installed_sw/Microsoft Outlook");

  exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("install_func.inc");
include("vcf.inc");

os = get_kb_item_or_exit("Host/MacOSX/Version");
apps = make_list(
  'Microsoft Word',
  'Microsoft Excel',
  'Microsoft PowerPoint',
  'Microsoft OneNote',
  'Microsoft Outlook'
);
report = '';

#2016
min_ver_16 = '16';
fix_ver_16 = '16.16.16';
fix_disp_16 = '16.16.16 (19111100)';

#2019
min_ver_19 = '16.17.0';
fix_ver_19 = '16.31';
fix_disp_19 = '16.31 (19111002)';

foreach app (apps)
{
  installs = get_installs(app_name:app);
  if (isnull(installs[1]))
    continue;

  foreach install (installs[1])
  {
    version = install['version'];

    if (ver_compare(ver:version, minver:min_ver_19, fix:fix_ver_19, strict:FALSE) < 0)
    {
      app_label = app + ' for Mac 2019';
      report +=
        '\n\n  Product           : ' + app_label +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fix_disp_19;
    }
    else if (ver_compare(ver:version, minver:min_ver_16, fix:fix_ver_16, strict:FALSE) < 0)
    {
      app_label = app + ' for Mac 2016';
      report +=
        '\n\n  Product           : ' + app_label +
        '\n  Installed version : ' + version +
        '\n  Fixed version     : ' + fix_disp_16;
    }
  }
}
if (empty(report))
  audit(AUDIT_HOST_NOT, "affected");

if (os =~ "^Mac OS X 10\.[0-9](\.|$)")
  report += '\n  Note              : Update will require Mac OS X 10.10.0 or later.\n';

security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);