7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
46.0%
.NET Core is prone to a remote code execution vulnerability.
# 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
CPE = "cpe:/a:microsoft:asp.net_core";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.826920");
script_version("2024-02-15T05:05:40+0000");
script_cve_id("CVE-2023-21808");
script_tag(name:"cvss_base", value:"7.2");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2023-02-14 23:37:00 +0000 (Tue, 14 Feb 2023)");
script_tag(name:"creation_date", value:"2023-02-15 10:39:31 +0530 (Wed, 15 Feb 2023)");
script_name(".NET Core Remote Code Execution Vulnerability - Windows");
script_tag(name:"summary", value:".NET Core is prone to a remote code execution vulnerability.");
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 a remote code execution
vulnerability in .NET.");
script_tag(name:"impact", value:"Successful exploitation will allow an
attacker to conduct remote code execution on an affected system.");
script_tag(name:"affected", value:".NET Core runtime 7.0 before 7.0.3, 6.0 before
6.0.14 and .NET Core SDK before 6.0.114 and 6.0.309, 7.0 before 7.0.200.");
script_tag(name:"solution", value:"Upgrade .NET Core runtimes to versions
7.0.3 or 6.0.14 or later or upgrade .NET Core SDK to versions 6.0.114 or
6.0.309 or 7.0.200 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/7.0/7.0.3/7.0.3.md");
script_xref(name:"URL", value:"https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.14/6.0.14.md");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 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 !~ "^[6|7]\.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:"6.0", test_version2:"6.0.13")){
fix = "6.0.14 or later";
}
else if(version_in_range(version:corerunVer, test_version: "7.0", test_version2: "7.0.2")){
fix = "7.0.3 or later";
}
}
else if(codesdkVer)
{
if(version_in_range(version:codesdkVer, test_version:"6.0", test_version2:"6.0.113") ||
version_in_range(version:codesdkVer, test_version:"6.0.300", test_version2:"6.0.308")){
fix1 = "6.0.114 or 6.0.309 or later";
}
else if(version_in_range_exclusive(version:codesdkVer, test_version_lo: "7.0", test_version_up: "7.0.200")){
fix1 = "7.0.200 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(0);
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
46.0%