KB5008282: Windows 7 and Windows Server 2008 R2 Security Update (December 2021)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(156069);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");

  script_cve_id(
    "CVE-2021-40441",
    "CVE-2021-41333",
    "CVE-2021-43207",
    "CVE-2021-43215",
    "CVE-2021-43216",
    "CVE-2021-43217",
    "CVE-2021-43222",
    "CVE-2021-43223",
    "CVE-2021-43224",
    "CVE-2021-43226",
    "CVE-2021-43229",
    "CVE-2021-43230",
    "CVE-2021-43233",
    "CVE-2021-43234",
    "CVE-2021-43236",
    "CVE-2021-43238",
    "CVE-2021-43245",
    "CVE-2021-43883",
    "CVE-2021-43893"
  );
  script_xref(name:"MSFT", value:"MS21-5008244");
  script_xref(name:"MSFT", value:"MS21-5008282");
  script_xref(name:"IAVA", value:"2021-A-0586-S");
  script_xref(name:"IAVA", value:"2021-A-0582-S");

  script_name(english:"KB5008282: Windows 7 and Windows Server 2008 R2 Security Update (December 2021)");

  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 5008282
or cumulative update 5008244. It is, therefore, affected by
multiple vulnerabilities:

  - An elevation of privilege vulnerability. An attacker can
    exploit this to gain elevated privileges.
    (CVE-2021-40441, CVE-2021-41333, CVE-2021-43207,
    CVE-2021-43226, CVE-2021-43229, CVE-2021-43230,
    CVE-2021-43238, CVE-2021-43245, CVE-2021-43883,
    CVE-2021-43893)

  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-43215,
    CVE-2021-43217, CVE-2021-43233, CVE-2021-43234)

  - An information disclosure vulnerability. An attacker can
    exploit this to disclose potentially sensitive
    information. (CVE-2021-43216, CVE-2021-43222,
    CVE-2021-43224, CVE-2021-43236)");
  script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB5008282 or Cumulative Update KB5008244.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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-2021-43217");

  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:"2021/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/12/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_server_2008:r2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_7");
  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) 2021-2024 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('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS21-12';
kbs = make_list(
  '5008282',
  '5008244'
);

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(win7:'1') <= 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:'6.1',
                   sp:1,
                   rollup_date:'12_2021',
                   bulletin:bulletin,
                   rollup_kb_list:[5008282, 5008244])
)
{
  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());
}