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nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS24_AUG_5041592.NASL
HistoryAug 13, 2024 - 12:00 a.m.

KB5041592: Windows 11 version 21H2 Security Update (August 2024)

2024-08-1300:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
10
windows 11
security update
elevation of privilege
buffer overflow
virtualization based security
azure virtual machine
vulnerabilities
secure boot
data exfiltration

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.016

Percentile

87.8%

The remote Windows host is missing security update 5041592. It is, therefore, affected by multiple vulnerabilities

  • An elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based Security (VBS) including a subset of Azure Virtual Machine SKUS. This can allow an attacker with administrator privileges to replace current versions of Windows system files with outdated versions. By exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities, circumvent some features of VBS, and exfiltrate data protected by VBS. (CVE-2024-21302)

  • A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism. (CVE-2022-2601)

Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.

#%NASL_MIN_LEVEL 80900
##
# (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('compat.inc');

if (description)
{
  script_id(205450);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/13");

  script_cve_id(
    "CVE-2022-2601",
    "CVE-2022-3775",
    "CVE-2023-40547",
    "CVE-2024-21302",
    "CVE-2024-38063",
    "CVE-2024-38106",
    "CVE-2024-38107",
    "CVE-2024-38114",
    "CVE-2024-38115",
    "CVE-2024-38116",
    "CVE-2024-38117",
    "CVE-2024-38118",
    "CVE-2024-38122",
    "CVE-2024-38125",
    "CVE-2024-38126",
    "CVE-2024-38127",
    "CVE-2024-38130",
    "CVE-2024-38131",
    "CVE-2024-38132",
    "CVE-2024-38133",
    "CVE-2024-38134",
    "CVE-2024-38136",
    "CVE-2024-38137",
    "CVE-2024-38140",
    "CVE-2024-38141",
    "CVE-2024-38142",
    "CVE-2024-38143",
    "CVE-2024-38144",
    "CVE-2024-38145",
    "CVE-2024-38146",
    "CVE-2024-38147",
    "CVE-2024-38148",
    "CVE-2024-38150",
    "CVE-2024-38151",
    "CVE-2024-38152",
    "CVE-2024-38153",
    "CVE-2024-38155",
    "CVE-2024-38178",
    "CVE-2024-38180",
    "CVE-2024-38193",
    "CVE-2024-38196",
    "CVE-2024-38198",
    "CVE-2024-38199",
    "CVE-2024-38215",
    "CVE-2024-38223"
  );
  script_xref(name:"MSKB", value:"5041592");
  script_xref(name:"MSFT", value:"MS24-5041592");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2024/09/03");
  script_xref(name:"IAVA", value:"2024-A-0487");
  script_xref(name:"IAVA", value:"2024-A-0500-S");
  script_xref(name:"IAVA", value:"2024-A-0499-S");

  script_name(english:"KB5041592: Windows 11 version 21H2 Security Update (August 2024)");

  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 5041592. It is, therefore, affected by multiple vulnerabilities

  - An elevation of privilege vulnerability exists in Windows based systems supporting Virtualization Based
    Security (VBS) including a subset of Azure Virtual Machine SKUS. This can allow an attacker with
    administrator privileges to replace current versions of Windows system files with outdated versions. By
    exploiting this vulnerability, an attacker could reintroduce previously mitigated vulnerabilities,
    circumvent some features of VBS, and exfiltrate data protected by VBS. (CVE-2024-21302)

  - A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an
    overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph,
    this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this
    vulnerability to circumvent the secure boot mechanism. (CVE-2022-2601)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/help/5041592");
  script_set_attribute(attribute:"solution", value:
"Apply Security Update 5041592");
  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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-38199");

  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:"2022/11/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/08/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/08/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_11_21h2");
  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) 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 = 'MS24-08';
kbs = make_list(
  '5041592'
);

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',
                   os_build:22000,
                   rollup_date:'08_2024',
                   bulletin:bulletin,
                   rollup_kb_list:[5041592])
)
{
  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());
}

References

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.016

Percentile

87.8%