Microsoft Office Unsupported Version Detection (Mac OS X)

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

include("compat.inc");

if (description)
{
  script_id(91857);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/15");

  script_xref(name:"IAVA", value:"0001-A-0503");
  
  script_name(english:"Microsoft Office Unsupported Version Detection (Mac OS X)");
  script_summary(english:"Checks the Microsoft Office version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host contains an unsupported version of Microsoft Office.");
  script_set_attribute(attribute:"description", value:
"According to its version, the installation of Microsoft Office on the
remote Mac OS X host is no longer supported.

Lack of support implies that no new security patches for the product
will be released by the vendor. As a result, it is likely to contain
security vulnerabilities.");
  # https://learn.microsoft.com/en-us/microsoft-365-apps/end-of-support/resources
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fecfa06c");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/lifecycle");
  # https://web.archive.org/web/20161014203556/https://support.microsoft.com/en-us/gp/lifeoffice
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?36e9cb48");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/lifecycle/selectindex");
  # https://support.office.com/en-us/article/Support-is-ending-for-Office-for-Mac-2011-559b72b1-e045-4c73-bad3-d7f1841b9e8c
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?81130d1f");
  script_set_attribute(attribute:"solution", value:
"Upgrade to a version of Microsoft Office that is currently supported.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"manual");
  script_set_attribute(attribute:"cvss_score_rationale", value:"Tenable score for unsupported software.");

  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:x:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2004:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2008:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2011:mac");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office:2016:mac");
  script_set_attribute(attribute:"unsupported_by_vendor", value:"true");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2025 Tenable Network Security, Inc.");

  script_dependencies("macosx_office_installed.nbin");
  script_require_keys("Host/MacOSX/Version");
  script_require_ports(
    "installed_sw/Office for Mac 2011",
    "installed_sw/Office 2008 for Mac",
    "installed_sw/Microsoft Outlook",
    "installed_sw/Microsoft Excel",
    "installed_sw/Microsoft Word",
    "installed_sw/Microsoft PowerPoint",
    "installed_sw/Microsoft OneNote"
  );
  exit(0);
}

include("install_func.inc");

var os = get_kb_item("Host/MacOSX/Version");
if (!os) audit(AUDIT_OS_NOT, "Mac OS X");

var now = get_kb_item("Flatline/nowtime");
if (empty_or_null(now))
  now = gettimeofday();

# macosx_office_installed.nasl doesn't support versions before Office 2008
#   since 2008 was the first Universal binary version but we might
#   find the application installs (Word, Excel, etc) so we'll include those.
var eos_dates = make_array(
  "10", "January 9, 2007",
  "11", "January 10, 2012",
  "12", "April 9, 2014",
  "14", "October 10, 2017",
  "2016", "October 13, 2020",
  "2019", "October 10, 2023",
  "2021", "October 13, 2026"
);

var apps = make_list(
  "Office 2008 for Mac",
  "Office for Mac 2011",
  "Microsoft Outlook",
  "Microsoft Excel",
  "Microsoft Word",
  "Microsoft PowerPoint",
  "Microsoft OneNote"
);

var product_found = 0;
var report = "";
var app, install;
var version, path;
var app_label, eos_date;

foreach app (apps)
{
  var installs = get_installs(app_name:app);
  if (installs[0] != IF_OK || isnull(installs[1])) continue;
  foreach install (installs[1])
  {
    product_found = 1;
    version = install["version"];
    path    = install["path"];
    app_label = app;
    if (version =~ "^10\.")
    {
      if (app !~ "Office") app_label += " v. X";
      eos_date = eos_dates['10'];
    }
    else if (version =~ "^11\.")
    {
      if (app !~ "Office") app_label += " 2004 for Mac";
      eos_date = eos_dates['11'];
    }
    else if (version =~ "^12\.")
    {
      if (app !~ "Office") app_label += " 2008 for Mac";
      eos_date = eos_dates['12'];
    }
    else if (version =~ "^14\.")
    {
      if (app !~ "Office") app_label += " for Mac 2011";
      eos_date = eos_dates['14'];
    }
    # Office 2016 versions 15.0 thru 16.16.99
    else if (version =~ "^(?:15\.(?:\d{1,2})|16\.(?:1[0-6]\.\d+|1[0-6])$)")
    {
      if (app !~ "Office") app_label += " for Mac 2016";
      eos_date = eos_dates['2016'];
    }
    # Office 2019 versions 16.17 thru 16.52
    else if (version =~ "^16\.(?:1[7-9]|[2-4][0-9]|5[0-2])")
    {
      if (app !~ "Office") app_label += " for Mac 2019";
      eos_date = eos_dates['2019'];
    }
    # Office 2021 versions 16.53 thru 16.88
    else if (now > 1791849600 && version =~ "^16\.(?:5[3-9]|6[0-9]|7[0-9]|8[0-8])")
    {
      if (app !~ "Office") app_label += " for Mac 2021";
      eos_date = eos_dates['2021'];
    }
    else continue;

    register_unsupported_product(product_name:app_label, cpe_base:"microsoft:office", version:version);

    report +=
      '\n  Product             : ' + app_label +
      '\n  Installed version   : ' + version +
      '\n  Path                : ' + path +
      '\n  End of support date : ' + eos_date +
      '\n';
  }
}

if (report)
{
  report = "The following unsupported products were identified:" + report;
  security_report_v4(port:0, severity:SECURITY_HOLE, extra:report);
}
else if (product_found)
{
  audit(AUDIT_INST_VER_NOT_VULN, "Microsoft Office");
}
else
{
  audit(AUDIT_NOT_INST, "Microsoft Office 2011 / 2008 / 2004 / etc.");
}