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
AI Score
Confidence
High
EPSS
Percentile
17.0%
.NET Core is prone to multiple denial of service
vulnerabilities.
# SPDX-FileCopyrightText: 2024 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
CPE = "cpe:/a:microsoft:asp.net_core";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.832677");
script_version("2024-03-21T05:06:54+0000");
script_cve_id("CVE-2024-21392", "CVE-2024-26190");
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:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 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:"2024-03-12 17:15:57 +0000 (Tue, 12 Mar 2024)");
script_tag(name:"creation_date", value:"2024-03-13 11:21:28 +0530 (Wed, 13 Mar 2024)");
script_name(".NET Core Multiple Denial of Service Vulnerabilities (KB5036452)");
script_tag(name:"summary", value:".NET Core is prone to multiple denial of service
vulnerabilities.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"These vulnerabilities exist:
- CVE-2024-21392: .NET Denial of Service Vulnerability
- CVE-2024-26190: Microsoft QUIC Denial of Service Vulnerability");
script_tag(name:"impact", value:"Successful exploitation will allow an attacker to cause denial
of service on an affected system.");
script_tag(name:"affected", value:".NET Core runtime version 7.0 prior to 7.0.17,
8.0 prior to 8.0.3 and .NET Core SDK 7.0 prior to 7.0.407, 8.0 prior to 8.0.202");
script_tag(name:"solution", value:"- Update .NET Core runtime to version 7.0.17 or 8.0.3
and .NET Core SDK to 7.0.407 or 8.0.202 or later.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"registry");
script_xref(name:"URL", value:"https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.3/8.0.3.md");
script_xref(name:"URL", value:"https://github.com/dotnet/core/blob/main/release-notes/7.0/7.0.17/7.0.17.md");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2024 Greenbone AG");
script_family("Windows");
script_dependencies("gb_asp_dotnet_core_detect_win.nasl");
script_mandatory_keys("ASP.NET/Core/Ver");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if(!infos = get_app_version_and_location(cpe:CPE, exit_no_version:TRUE))
exit(0);
coreVers = infos["version"];
path = infos["location"];
if(!coreVers || coreVers !~ "^[7|8]\.0"){
exit(0);
}
if(!corerunVer = get_kb_item(".NET/Core/Runtime/Ver"))
{
if(!codesdkVer = get_kb_item(".NET/Core/SDK/Ver")){
exit(0);
}
}
if(corerunVer)
{
if(version_in_range(version:corerunVer, test_version:"7.0", test_version2:"7.0.16")){
fix = "7.0.17 or later";
}
else if(version_in_range(version:corerunVer, test_version:"8.0", test_version2:"8.0.2")){
fix = "8.0.3 or later";
}
}
else if(codesdkVer)
{
if(version_in_range(version:codesdkVer, test_version:"7.0", test_version2:"7.0.406")){
fix1 = "7.0.407 or later";
}
else if(version_in_range(version:codesdkVer, test_version:"8.0", test_version2:"8.0.201")){
fix1 = "8.0.202 or later";
}
}
if(fix)
{
report = report_fixed_ver(installed_version:"ASP .NET Core With Microsoft .NET Core runtimes " + corerunVer,
fixed_version:"ASP .NET Core With Microsoft .NET Core runtimes version " + fix, install_path:path);
security_message(data:report);
exit(0);
}
else if(fix1)
{
report = report_fixed_ver(installed_version:"ASP .NET Core With Microsoft .NET Core SDK " + codesdkVer,
fixed_version:"ASP .NET Core With Microsoft .NET Core SDK version " + fix1, install_path:path);
security_message(data:report);
exit(0);
}
exit(99);
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
AI Score
Confidence
High
EPSS
Percentile
17.0%