7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
44.2%
This host is missing an important security
update according to Microsoft security update April 2023.
# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.826960");
script_version("2024-02-19T14:37:31+0000");
script_cve_id("CVE-2023-24860");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_tag(name:"last_modification", value:"2024-02-19 14:37:31 +0000 (Mon, 19 Feb 2024)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2023-04-11 21:15:00 +0000 (Tue, 11 Apr 2023)");
script_tag(name:"creation_date", value:"2023-04-12 11:14:20 +0530 (Wed, 12 Apr 2023)");
script_tag(name:"qod_type", value:"executable_version");
script_name("Microsoft Malware Protection Engine Denial of Service Vulnerability (Apr 2023)");
script_tag(name:"summary", value:"This host is missing an important security
update according to Microsoft security update April 2023.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
on the target host.");
script_tag(name:"insight", value:"The flaw exists due to an insufficient validation
of user-supplied input in Microsoft Defender.");
script_tag(name:"impact", value:"Successful exploitation will allow an attacker
to conduct denial of service (DoS) attack on target systems.");
script_tag(name:"affected", value:"Malware Protection Engine prior to 1.1.20200.4
on Microsoft Windows");
script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");
script_tag(name:"solution_type", value:"VendorFix");
script_xref(name:"URL", value:"https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/microsoft-defender-antivirus-updates?view=o365-worldwide");
script_xref(name:"URL", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24860");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Windows : Microsoft Bulletins");
script_dependencies("smb_reg_service_pack.nasl");
script_require_ports(139, 445);
script_mandatory_keys("SMB/WindowsVersion");
exit(0);
}
include("smb_nt.inc");
include("secpod_reg.inc");
include("version_func.inc");
key = "SOFTWARE\Microsoft\Windows Defender";
if(!registry_key_exists(key:key)){
exit(0);
}
def_version = registry_get_sz(key:"SOFTWARE\Microsoft\Windows Defender\Signature Updates",
item:"EngineVersion");
if(!def_version){
exit(0);
}
##First version of the Microsoft Malware Protection Engine with this vulnerability addressed 1.1.20200.4
if(version_is_less(version:def_version, test_version:"1.1.20200.4"))
{
report = report_fixed_ver(installed_version:def_version, fixed_version: "1.1.20200.4 or higher");
security_message(data:report);
exit(0);
}
exit(0);