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KB4586823: Windows 8.1 and Windows Server 2012 R2 November 2020 Security Update

The Windows installation on the remote host is missing security update 4586781 and is affected by multiple vulnerabilities. Apply Security Only update KB4586823 or Cumulative Update KB4586845. For more details review the vendor advisory

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Code
#
# (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(142686);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");

  script_cve_id(
    "CVE-2020-1599",
    "CVE-2020-16997",
    "CVE-2020-17000",
    "CVE-2020-17001",
    "CVE-2020-17004",
    "CVE-2020-17011",
    "CVE-2020-17014",
    "CVE-2020-17024",
    "CVE-2020-17025",
    "CVE-2020-17026",
    "CVE-2020-17027",
    "CVE-2020-17028",
    "CVE-2020-17029",
    "CVE-2020-17031",
    "CVE-2020-17032",
    "CVE-2020-17033",
    "CVE-2020-17034",
    "CVE-2020-17036",
    "CVE-2020-17038",
    "CVE-2020-17040",
    "CVE-2020-17041",
    "CVE-2020-17042",
    "CVE-2020-17043",
    "CVE-2020-17044",
    "CVE-2020-17045",
    "CVE-2020-17047",
    "CVE-2020-17049",
    "CVE-2020-17051",
    "CVE-2020-17052",
    "CVE-2020-17055",
    "CVE-2020-17056",
    "CVE-2020-17068",
    "CVE-2020-17069",
    "CVE-2020-17087",
    "CVE-2020-17088"
  );
  script_xref(name:"MSKB", value:"4586823");
  script_xref(name:"MSKB", value:"4586845");
  script_xref(name:"MSFT", value:"MS20-4586823");
  script_xref(name:"MSFT", value:"MS20-4586845");
  script_xref(name:"IAVA", value:"2020-A-0513-S");
  script_xref(name:"IAVA", value:"2020-A-0518-S");
  script_xref(name:"IAVA", value:"2020-A-0521-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
  script_xref(name:"CEA-ID", value:"CEA-2020-0135");
  script_xref(name:"CEA-ID", value:"CEA-2020-0124");

  script_name(english:"KB4586823: Windows 8.1 and Windows Server 2012 R2 November 2020 Security Update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Windows installation on the remote host is missing security update 4586781. It is, therefore,
 affected by multiple vulnerabilities. Please review the vendor advisory for more details.");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4586823/windows-8-1-update");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4586845/windows-8-1-update");
  script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4586823 or Cumulative Update KB4586845.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:N/S:U/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-2020-17051");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/11/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_server_2012:r2");
  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) 2020-2024 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 = "MS20-11";
kbs = make_list('4586823', '4586845');

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(win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# Windows 8 EOL
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
  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:"6.3",
                   sp:0,
                   rollup_date:"11_2020",
                   bulletin:bulletin,
                   rollup_kb_list:[4586823, 4586845])
)
{
  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());
}

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