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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_NOV_OFFICE_C2R.NASL
HistoryJun 01, 2022 - 12:00 a.m.

Security Updates for Microsoft Office Products C2R (November 2021)

2022-06-0100:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
26

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

7.8 High

CVSS3

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

7.8 High

AI Score

Confidence

High

0.034 Low

EPSS

Percentile

91.5%

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

  • A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
    (CVE-2021-42292)

  • Two remote code execution vulnerabilities. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-41368)

#%NASL_MIN_LEVEL 70300
##
# (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('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(161754);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/29");

  script_cve_id("CVE-2021-41368");
  script_xref(name:"IAVA", value:"2021-A-0546-S");

  script_name(english:"Security Updates for Microsoft Office Products C2R (November 2021)");

  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. It is, therefore, affected by multiple vulnerabilities:

  - A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security
    feature and perform unauthorized actions compromising the integrity of the system/application.
    (CVE-2021-42292)

  - Two remote code execution vulnerabilities. An attacker can exploit this to bypass authentication and
    execute unauthorized arbitrary commands. (CVE-2021-41368)");
  # 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://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:P/I:P/A:P");
  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:L/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-41368");

  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:"2021/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/06/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  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) 2021-2023 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 = 'MS21-11';
var app_info = vcf::microsoft::office::get_app_info(app:'Microsoft Office');

var constraints = [
  {'product' : 'Microsoft Office 2016', 'channel':'Deferred', 'channel_version':'2102', 'file':'graph.exe', 'fixed_version': '16.0.13801.21050'},
  {'product' : 'Microsoft Office 2016', 'channel':'Deferred', 'file':'graph.exe', 'fixed_version': '16.0.13127.21820'},
  {'product' : 'Microsoft Office 2016', 'channel':'Microsoft 365 Apps on Windows 7', 'file':'graph.exe', 'fixed_version': '16.0.12527.22060'},
  {'product' : 'Microsoft Office 2016', 'channel':'Enterprise Deferred', 'channel_version':'2109', 'file':'graph.exe', 'fixed_version': '16.0.14430.20342'},
  {'product' : 'Microsoft Office 2016', 'channel':'Enterprise Deferred', 'file':'graph.exe', 'fixed_version': '16.0.14326.20600'},
  {'product' : 'Microsoft Office 2016', 'channel':'First Release for Deferred', 'file':'graph.exe', 'fixed_version': '16.0.14326.20600'},
  {'product' : 'Microsoft Office 2016', 'channel':'2016 Retail', 'file':'graph.exe', 'fixed_version': '16.0.14527.20276'},
  {'product' : 'Microsoft Office 2016', 'channel':'Current', 'file':'graph.exe', 'fixed_version': '16.0.14527.20276'},
  {'product' : 'Microsoft Office 2019', 'channel':'2019 Volume', 'file':'graph.exe', 'fixed_version': '16.0.10380.20037'},
  {'product' : 'Microsoft Office 2019', 'channel':'2019 Retail', 'file':'graph.exe', 'fixed_version': '16.0.14527.20276'},
  {'product' : 'Microsoft Office 2021', 'channel':'LTSC 2021', 'file':'graph.exe', 'fixed_version': '16.0.14332.20176'},
  {'product' : 'Microsoft Office 2021', 'channel':'2021 Retail', 'file':'graph.exe', 'fixed_version': '16.0.14527.20276'}
];

vcf::microsoft::office::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING,
  bulletin:bulletin,
  subproduct:'Excel'
);

VendorProductVersionCPE
microsoftofficecpe:/a:microsoft:office

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

7.8 High

CVSS3

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

7.8 High

AI Score

Confidence

High

0.034 Low

EPSS

Percentile

91.5%