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nessusThis script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_SEP_OFFICE_C2R.NASL
HistoryJun 10, 2022 - 12:00 a.m.

Security Updates for Microsoft Office Products C2R (September 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
32
microsoft office
security updates
c2r
september 2021
session spoofing
remote code execution
information disclosure

CVSS2

6.8

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

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

0.296

Percentile

97.0%

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

  • A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-38650)

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-38646, CVE-2021-38655, CVE-2021-38658, CVE-2021-38659, CVE-2021-38660)

  • An information disclosure vulnerability in the graphics component. An attacker can exploit this to disclose sensitive information. (CVE-2021-38657)

#%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(162054);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/25");

  script_cve_id(
    "CVE-2021-38646",
    "CVE-2021-38650",
    "CVE-2021-38655",
    "CVE-2021-38657",
    "CVE-2021-38658",
    "CVE-2021-38659",
    "CVE-2021-38660"
  );
  script_xref(name:"IAVA", value:"2021-A-0428-S");
  script_xref(name:"IAVA", value:"2021-A-0425-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/18");

  script_name(english:"Security Updates for Microsoft Office Products C2R (September 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 session spoofing vulnerability exists. An attacker can exploit this to perform actions with the
    privileges of another user. (CVE-2021-38650)

  - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-38646, CVE-2021-38655, CVE-2021-38658, CVE-2021-38659,
      CVE-2021-38660)

  - An information disclosure vulnerability in the graphics component. An attacker can exploit this to
    disclose sensitive information. (CVE-2021-38657)");
  # 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: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-2021-38660");

  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:"2021/09/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/09/14");
  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: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) 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 = 'MS21-09';

var app_info = vcf::microsoft::office::get_app_info(app:'Microsoft Office');

var constraints = [
  
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.13801.20960','channel': 'Deferred','channel_version': '2102'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.13127.21766','channel': 'Deferred'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.12527.22032','channel': 'Microsoft 365 Apps on Windows 7'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.14228.20324','channel': 'Enterprise Deferred','channel_version': '2107'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.14131.20384','channel': 'Enterprise Deferred'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.14326.20404','channel': 'First Release for Deferred'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.14326.20404','channel': '2016 Retail'},
    {'product':'Microsoft Office 2016','file':'graph.exe','fixed_version':'16.0.14326.20404','channel': 'Current'},
    {'product':'Microsoft Office 2019','file':'graph.exe','fixed_version':'16.0.14326.20404','channel': '2019 Retail'},
    {'product':'Microsoft Office 2019','file':'graph.exe','fixed_version':'16.0.10378.20029','channel': '2019 Volume'}
];

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

CVSS2

6.8

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

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

0.296

Percentile

97.0%