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This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_NOV_5007215.NASL
HistoryNov 09, 2021 - 12:00 a.m.

KB5007215: Windows 11 Security Updates (November 2021)

2021-11-0900:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
103

The Windows 11 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  • A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-41356, CVE-2021-42274, CVE-2021-42284)

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-26443, CVE-2021-38666, CVE-2021-41378, CVE-2021-42276, CVE-2021-42279)

  • An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges.
    (CVE-2021-36957, CVE-2021-41366, CVE-2021-41367, CVE-2021-41370, CVE-2021-41377, CVE-2021-41379, CVE-2021-42277, CVE-2021-42280, CVE-2021-42283, CVE-2021-42285)

  • An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-38631, CVE-2021-38665, CVE-2021-41371)

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

if (description)
{
  script_id(154997);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/06/17");

  script_cve_id(
    "CVE-2021-26443",
    "CVE-2021-34527",
    "CVE-2021-36957",
    "CVE-2021-38631",
    "CVE-2021-38665",
    "CVE-2021-38666",
    "CVE-2021-41351",
    "CVE-2021-41356",
    "CVE-2021-41366",
    "CVE-2021-41367",
    "CVE-2021-41370",
    "CVE-2021-41371",
    "CVE-2021-41377",
    "CVE-2021-41378",
    "CVE-2021-41379",
    "CVE-2021-42274",
    "CVE-2021-42276",
    "CVE-2021-42277",
    "CVE-2021-42279",
    "CVE-2021-42280",
    "CVE-2021-42283",
    "CVE-2021-42284",
    "CVE-2021-42285"
  );
  script_xref(name:"MSKB", value:"5007215");
  script_xref(name:"MSFT", value:"MS21-5007215");
  script_xref(name:"IAVA", value:"2021-A-0539-S");
  script_xref(name:"IAVA", value:"2021-A-0545-S");
  script_xref(name:"IAVA", value:"2021-A-0544-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/03/17");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/07/20");
  script_xref(name:"CEA-ID", value:"CEA-2021-0034");

  script_name(english:"KB5007215: Windows 11 Security Updates (November 2021)");

  script_set_attribute(attribute:"synopsis", value:
"The Windows 11 installation on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Windows 11 installation on the remote host is missing
security updates. It is, therefore, affected by multiple
vulnerabilities:

  - A denial of service (DoS) vulnerability. An attacker can
    exploit this issue to cause the affected component to
    deny system or application services. (CVE-2021-41356,
    CVE-2021-42274, CVE-2021-42284)

  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-26443,
    CVE-2021-38666, CVE-2021-41378, CVE-2021-42276,
    CVE-2021-42279)

  - An elevation of privilege vulnerability. An attacker can
    exploit this to gain elevated privileges.
    (CVE-2021-36957, CVE-2021-41366, CVE-2021-41367,
    CVE-2021-41370, CVE-2021-41377, CVE-2021-41379,
    CVE-2021-42277, CVE-2021-42280, CVE-2021-42283,
    CVE-2021-42285)

  - An information disclosure vulnerability. An attacker can
    exploit this to disclose potentially sensitive
    information. (CVE-2021-38631, CVE-2021-38665,
    CVE-2021-41371)");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/5007215");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released KB5007215 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-34527");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-26443");

  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:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  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:"2021/11/09");

  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('smb_hotfixes_fcheck.inc');
include('smb_hotfixes.inc');
include('smb_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

var bulletin = "MS21-11";
var kbs = make_list('5007215');

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);

var 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,
                   rollup_date:'11_2021',
                   os_build:'22000',
                   bulletin:bulletin,
                   rollup_kb_list:[5007215])
                   
)
{
  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());
}
VendorProductVersion
microsoftwindows

References

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