Microsoft 365 (Office) App Code Execution (December 2021)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, 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(178436);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/27");

  script_cve_id("CVE-2021-43905");
  script_xref(name:"IAVA", value:"2021-A-0584-S");

  script_name(english:"Microsoft 365 (Office) App Code Execution (December 2021)");

  script_set_attribute(attribute:"synopsis", value:
"The Windows app installed on the remote host is affected by a code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Windows 'Microsoft 365 (Office)' app installed on the remote host is affected by a code execution vulnerability. An
attacker who successfully exploited the vulnerability could execute arbitrary code. Exploitation of the
vulnerability requires that a program process a specially crafted file.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43905");
  script_set_attribute(attribute:"solution", value:
"Upgrade to app version 18.2110.13110.0, or later via the Microsoft Store.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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:C/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-2021-43905");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "wmi_enum_windows_app_store.nbin");
  script_require_keys("SMB/Registry/Enumerated", "WMI/Windows App Store/Enumerated");
  script_require_ports(139, 445);

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var apps = ['Microsoft.MicrosoftOfficeHub'];

var app_info = vcf::microsoft_appstore::get_app_info(app_list:apps);

vcf::check_granularity(app_info:app_info, sig_segments:3);

var constraints = [
    { 'fixed_version' : '18.2110.13110.0'}
];

vcf::microsoft_appstore::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);