6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
37.6%
QNAP QTS is prone to multiple buffer overflow vulnerabilities.
# SPDX-FileCopyrightText: 2021 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:/o:qnap:qts";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.146650");
script_version("2023-09-27T05:05:31+0000");
script_tag(name:"last_modification", value:"2023-09-27 05:05:31 +0000 (Wed, 27 Sep 2023)");
script_tag(name:"creation_date", value:"2021-09-13 08:58:04 +0000 (Mon, 13 Sep 2021)");
script_tag(name:"cvss_base", value:"6.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-09-23 17:26:00 +0000 (Thu, 23 Sep 2021)");
script_cve_id("CVE-2021-28816", "CVE-2021-34343");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("QNAP QTS Buffer Overflow Vulnerabilities (QSA-21-33)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 Greenbone AG");
script_family("Buffer overflow");
script_dependencies("gb_qnap_nas_http_detect.nasl");
script_mandatory_keys("qnap/nas/qts/detected");
script_tag(name:"summary", value:"QNAP QTS is prone to multiple buffer overflow vulnerabilities.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Two stack buffer overflow vulnerabilities have been reported to
affect QNAP devices running QTS. If exploited, these vulnerabilities allow attackers to execute
arbitrary code.");
script_tag(name:"affected", value:"QNAP NAS QTS prior versions 4.3.3.1693 build 20210624,
4.3.6.1750 build 20210730, 4.5.4.1715 build 20210630 and 5.0.0.1716 build 20210701.");
script_tag(name:"solution", value:"Update to version 4.3.3.1693 build 20210624,
4.3.6.1750 build 20210730, 4.5.4.1715 build 20210630, 5.0.0.1716 build 20210701 or later.");
script_xref(name:"URL", value:"https://www.qnap.com/en/security-advisory/qsa-21-33");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (!version = get_app_version(cpe: CPE, nofork: TRUE))
exit(0);
build = get_kb_item("qnap/nas/qts/build");
if (version_is_less(version: version, test_version: "4.3.3.1693")) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.3.3.1693", fixed_build: "20210624");
security_message(port: 0, data: report);
exit(0);
}
if (version_is_equal(version: version, test_version: "4.3.3.1693") &&
(!build || version_is_less(version: build, test_version: "20210624"))) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.3.3.1693", fixed_build: "20210624");
security_message(port: 0, data: report);
exit(0);
}
if (version =~ "^4\.3\.[456]") {
if (version_is_less(version: version, test_version: "4.3.6.1750")) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.3.6.1750", fixed_build: "20210730");
security_message(port: 0, data: report);
exit(0);
}
if (version_is_equal(version: version, test_version: "4.3.6.1750") &&
(!build || version_is_less(version: build, test_version: "20210730"))) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.3.6.1750", fixed_build: "20210730");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^4\.[45]") {
if (version_is_less(version: version, test_version: "4.5.4.1715")) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.5.4.1715", fixed_build: "20210630");
security_message(port: 0, data: report);
exit(0);
}
if (version_is_equal(version: version, test_version: "4.5.4.1715") &&
(!build || version_is_less(version: build, test_version: "20210630"))) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "4.5.4.1715", fixed_build: "20210630");
security_message(port: 0, data: report);
exit(0);
}
}
if (version =~ "^5\.") {
if (version_is_less(version: version, test_version: "5.0.0.1716")) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "5.0.0.1716", fixed_build: "20210701");
security_message(port: 0, data: report);
exit(0);
}
if (version_is_equal(version: version, test_version: "5.0.0.1716") &&
(!build || version_is_less(version: build, test_version: "20210701"))) {
report = report_fixed_ver(installed_version: version, installed_build: build, fixed_version: "5.0.0.1716", fixed_build: "20210701");
security_message(port: 0, data: report);
exit(0);
}
}
exit(99);
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
37.6%