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nessusThis script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_JAN_WORD_C2R.NASL
HistoryJun 10, 2022 - 12:00 a.m.

Security Updates for Microsoft Word Products C2R (January 2021)

2022-06-1000:00:00
This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
33
microsoft word products
security updates
cve-2021-1715
cve-2021-1716
remote code execution
office 365
office 2016 c2r
office 2019
authentication bypass
automatic updates

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.011

Percentile

84.9%

The Microsoft Word Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-1715, CVE-2021-1716)
#
# (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(162057);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/20");

  script_cve_id("CVE-2021-1715", "CVE-2021-1716");
  script_xref(name:"IAVA", value:"2021-A-0024-S");
  script_xref(name:"CEA-ID", value:"CEA-2021-0001");

  script_name(english:"Security Updates for Microsoft Word Products C2R (January 2021)");

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

  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-1715,
    CVE-2021-1716)");
  # https://docs.microsoft.com/en-us/officeupdates/update-history-microsoft365-apps-by-date
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fd4508ff");
  script_set_attribute(attribute:"solution", value:
"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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-1716");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  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) 2022-2023 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('vcf_extras_office.inc');

var bulletin = 'MS21-01';

var constraints = [
    {'fixed_version':'16.0.12527.21504','channel': 'Microsoft 365 Apps on Windows 7'},
    {'fixed_version':'16.0.12527.21504','channel': 'Deferred','channel_version': '2002'},
    {'fixed_version':'16.0.11929.20994','channel': 'Deferred'},
    {'fixed_version':'16.0.13426.20526','channel': 'Enterprise Deferred','channel_version': '2011'},
    {'fixed_version':'16.0.13328.20550','channel': 'Enterprise Deferred'},
    {'fixed_version':'16.0.13127.21064','channel': 'First Release for Deferred'},
    {'fixed_version':'16.0.13530.20376','channel': '2016 Retail'},
    {'fixed_version':'16.0.13530.20376','channel': 'Current'},
    {'fixed_version':'16.0.13530.20376','channel': '2019 Retail'},
    {'fixed_version':'16.0.10370.20052','channel': '2019 Volume'}
];

vcf::microsoft::office_product::check_version_and_report(
  constraints:constraints,
  severity:SECURITY_HOLE,
  bulletin:bulletin,
  subproduct:'Word'
);

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.011

Percentile

84.9%