7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.6 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.0005 Low
EPSS
Percentile
17.9%
Check MK is prone to a certification validation 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:check_mk_project:check_mk";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.149405");
script_version("2023-12-20T05:05:58+0000");
script_tag(name:"last_modification", value:"2023-12-20 05:05:58 +0000 (Wed, 20 Dec 2023)");
script_tag(name:"creation_date", value:"2023-03-06 04:26:21 +0000 (Mon, 06 Mar 2023)");
script_tag(name:"cvss_base", value:"7.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:C/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2022-12-13 16:13:00 +0000 (Tue, 13 Dec 2022)");
script_cve_id("CVE-2022-23491");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Check MK 1.6.x < 2.2.0b1, 2.3.x < 2.3.0b1 Certification Validation Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("General");
script_dependencies("gb_check_mk_web_detect.nasl");
script_mandatory_keys("check_mk/detected");
script_tag(name:"summary", value:"Check MK is prone to a certification validation vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The compiled version of the agent-updater uses its own
collection of trusted Certificate Authorities. This collection comes from the Python package
certifi and is based on the collection of Mozilla Firefox. The used Python package and therefore
the collection was outdated and is subject to CVE-2022-23491. This collection included a CA
certificate of TrustCor which is not considered trustworthy anymore.");
script_tag(name:"impact", value:"If an attacker is able to create certificates for arbitrary
domains signed by this CA, machine-in-the-middle attacks could be possible.");
script_tag(name:"affected", value:"Check MK version 1.6.x prior to 2.2.0b1 and 2.3.x prior to
2.3.0b1.");
script_tag(name:"solution", value:"Update to version 2.2.0b1, 2.3.0b1 or later.");
script_xref(name:"URL", value:"https://checkmk.com/werk/15068");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!port = get_app_port(cpe: CPE, service: "www"))
exit(0);
if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE))
exit(0);
version = infos["version"];
location = infos["location"];
if (version_in_range_exclusive(version: version, test_version_lo: "1.6.0", test_version_up: "2.2.0b1")) {
report = report_fixed_ver(installed_version: version, fixed_version: "2.2.0b1", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "2.3.0", test_version_up: "2.3.0b1")) {
report = report_fixed_ver(installed_version: version, fixed_version: "2.3.0b1", install_path: location);
security_message(port: port, data: report);
exit(0);
}
exit(99);
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.6 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.0005 Low
EPSS
Percentile
17.9%