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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_SEP_5005573.NASL
HistorySep 14, 2021 - 12:00 a.m.

KB5005573: Windows 10 Version 1607 and Windows Server 2016 September 2021 Security Update

2021-09-1400:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
388

9.1 High

AI Score

Confidence

Low

The remote Windows host is missing security update 5005573.
It is, therefore, affected by multiple vulnerabilities :

  • An memory corruption vulnerability exists. An attacker can exploit this to corrupt the memory and cause unexpected behaviors within the system/application.
    (CVE-2021-26435)

  • An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-36960, CVE-2021-36962, CVE-2021-36969, CVE-2021-36972, CVE-2021-38629, CVE-2021-38635, CVE-2021-38636)

  • 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-2021-38624, CVE-2021-38632)

  • An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
    (CVE-2021-36955, CVE-2021-36963, CVE-2021-36964, CVE-2021-36967, CVE-2021-36973, CVE-2021-36974, CVE-2021-38628, CVE-2021-38630, CVE-2021-38633, CVE-2021-38634, CVE-2021-38638, CVE-2021-38639, CVE-2021-38667, CVE-2021-38671, CVE-2021-40447)

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-36965, CVE-2021-36958, CVE-2021-40444)

  • A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-36961)

  • A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-36959)

#%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(153377);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/29");

  script_cve_id(
    "CVE-2021-26435",
    "CVE-2021-36955",
    "CVE-2021-36958",
    "CVE-2021-36959",
    "CVE-2021-36960",
    "CVE-2021-36961",
    "CVE-2021-36962",
    "CVE-2021-36963",
    "CVE-2021-36964",
    "CVE-2021-36965",
    "CVE-2021-36967",
    "CVE-2021-36969",
    "CVE-2021-36972",
    "CVE-2021-36973",
    "CVE-2021-36974",
    "CVE-2021-38624",
    "CVE-2021-38628",
    "CVE-2021-38629",
    "CVE-2021-38630",
    "CVE-2021-38632",
    "CVE-2021-38633",
    "CVE-2021-38634",
    "CVE-2021-38635",
    "CVE-2021-38636",
    "CVE-2021-38638",
    "CVE-2021-38639",
    "CVE-2021-38667",
    "CVE-2021-38671",
    "CVE-2021-40444",
    "CVE-2021-40447"
  );
  script_xref(name:"MSKB", value:"5005573");
  script_xref(name:"MSFT", value:"MS21-5005573");
  script_xref(name:"IAVA", value:"2021-A-0431-S");
  script_xref(name:"IAVA", value:"2021-A-0429-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/11/17");

  script_name(english:"KB5005573: Windows 10 Version 1607 and Windows Server 2016 September 2021 Security Update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 5005573.
It is, therefore, affected by multiple vulnerabilities :

  - An memory corruption vulnerability exists. An attacker
    can exploit this to corrupt the memory and cause
    unexpected behaviors within the system/application.
    (CVE-2021-26435)

  - An information disclosure vulnerability. An attacker can
    exploit this to disclose potentially sensitive
    information. (CVE-2021-36960, CVE-2021-36962,
    CVE-2021-36969, CVE-2021-36972, CVE-2021-38629,
    CVE-2021-38635, CVE-2021-38636)

  - 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-2021-38624, CVE-2021-38632)

  - An elevation of privilege vulnerability. An attacker can
    exploit this to gain elevated privileges.
    (CVE-2021-36955, CVE-2021-36963, CVE-2021-36964,
    CVE-2021-36967, CVE-2021-36973, CVE-2021-36974,
    CVE-2021-38628, CVE-2021-38630, CVE-2021-38633,
    CVE-2021-38634, CVE-2021-38638, CVE-2021-38639,
    CVE-2021-38667, CVE-2021-38671, CVE-2021-40447)

  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-36965,
    CVE-2021-36958, CVE-2021-40444)

  - A denial of service (DoS) vulnerability. An attacker can
    exploit this issue to cause the affected component to
    deny system or application services. (CVE-2021-36961)

  - A session spoofing vulnerability exists. An attacker can
    exploit this to perform actions with the privileges of
    another user. (CVE-2021-36959)");
  # https://support.microsoft.com/en-us/topic/september-14-2021-kb5005573-os-build-14393-4651-48853795-3857-4485-a2bf-f15b39464b41
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?be42cfd3");
  script_set_attribute(attribute:"solution", value:
"Apply Cumulative Update KB5005573.");
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-36958");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-40444");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Office Word Malicious MSHTML RCE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  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:"2021/09/14");

  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 : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_check_rollup.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('audit.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_hotfixes.inc');
include('smb_func.inc');
include('misc_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = "MS21-09";
kbs = make_list('5005573');

if (get_kb_item('Host/patch_management_checks')) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit('SMB/Registry/Enumerated');
get_kb_item_or_exit('SMB/WindowsVersion', exit_code:1);

if (hotfix_check_sp_range(win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  smb_check_rollup(os:"10",
                   sp:0,
                   os_build:'14393',
                   rollup_date:'09_2021',
                   bulletin:bulletin,
                   rollup_kb_list:[5005573])
)
{
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
VendorProductVersionCPE
microsoftwindowscpe:/o:microsoft:windows

References