7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
15.7%
Nextcloud Server is prone to an improper authentication
vulnerability.
# 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:nextcloud:nextcloud_server";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.127776");
script_version("2024-06-20T05:05:33+0000");
script_tag(name:"last_modification", value:"2024-06-20 05:05:33 +0000 (Thu, 20 Jun 2024)");
script_tag(name:"creation_date", value:"2024-06-18 08:00:29 +0000 (Tue, 18 Jun 2024)");
script_tag(name:"cvss_base", value:"8.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:C/A:C");
script_cve_id("CVE-2024-37313");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Nextcloud Server < 21.0.9.17, 22.x < 22.2.10.22, 23.x < 23.0.12.17, 24.x < 24.0.12.14, 25.x < 25.0.13.8, 26.x < 26.0.13, 27.x < 27.1.8, 28.x < 28.0.4 Improper Authentication Vulnerability (GHSA-9v72-9xv5-3p7c)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2024 Greenbone AG");
script_family("Web application abuses");
script_dependencies("gb_nextcloud_detect.nasl");
script_mandatory_keys("nextcloud/installed");
script_tag(name:"summary", value:"Nextcloud Server is prone to an improper authentication
vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Under some circumstance it was possible to bypass the second
factor of 2FA after successfully providing the user credentials.");
script_tag(name:"affected", value:"Nextcloud Server versions prior to 21.0.9.17, 22.x prior to
22.2.10.22, 23.x prior to 23.0.12.17, 24.x prior to 24.0.12.14, 25.x prior to 25.0.13.8, 26.x
prior to 26.0.13, 27.x prior to 27.1.8 and 28.x prior to 28.0.4.");
script_tag(name:"solution", value:"Update to version 21.0.9.17, 22.2.10.22, 23.0.12.17,
24.0.12.14, 25.0.13.8, 26.0.13, 27.1.8, 28.0.4 or later.");
script_xref(name:"URL", value:"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9v72-9xv5-3p7c");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!port = get_app_port(cpe: CPE))
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_is_less(version: version, test_version: "21.0.9.17")) {
report = report_fixed_ver(installed_version: version, fixed_version: "21.0.9.17 (Nextcloud Enterprise only)", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "22.0.0", test_version_up: "22.2.10.22")) {
report = report_fixed_ver(installed_version: version, fixed_version: "22.2.10.22 (Nextcloud Enterprise only)", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "23.0.0", test_version_up: "23.0.12.17")) {
report = report_fixed_ver(installed_version: version, fixed_version: "23.0.12.17 (Nextcloud Enterprise only)", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "24.0.0", test_version_up: "24.0.12.14")) {
report = report_fixed_ver(installed_version: version, fixed_version: "24.0.12.14 (Nextcloud Enterprise only)", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "25.0.0", test_version_up: "25.0.13.8")) {
report = report_fixed_ver(installed_version: version, fixed_version: "25.0.13.8 (Nextcloud Enterprise only)", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "26.0.0", test_version_up: "26.0.13")) {
report = report_fixed_ver(installed_version: version, fixed_version: "26.0.13", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "27.0.0", test_version_up: "27.1.8")) {
report = report_fixed_ver(installed_version: version, fixed_version: "27.1.8", install_path: location);
security_message(port: port, data: report);
exit(0);
}
if (version_in_range_exclusive(version: version, test_version_lo: "28.0.0", test_version_up: "28.0.4")) {
report = report_fixed_ver(installed_version: version, fixed_version: "28.0.4", install_path: location);
security_message(port: port, data: report);
exit(0);
}
exit(99);
7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
15.7%