NETGEAR Smart Cloud Switch Command Injection Vulnerability (PSV-2021-0071)

# Copyright (C) 2021 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.146186");
  script_version("2021-08-17T12:00:57+0000");
  script_tag(name:"last_modification", value:"2021-08-17 12:00:57 +0000 (Tue, 17 Aug 2021)");
  script_tag(name:"creation_date", value:"2021-06-29 06:29:49 +0000 (Tue, 29 Jun 2021)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-05-27 20:22:00 +0000 (Thu, 27 May 2021)");

  script_cve_id("CVE-2021-33514");

  script_tag(name:"qod_type", value:"remote_banner");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("NETGEAR Smart Cloud Switch Command Injection Vulnerability (PSV-2021-0071)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_netgear_smart_cloud_switch_http_detect.nasl");
  script_mandatory_keys("netgear/smart_cloud_switch/detected");

  script_tag(name:"summary", value:"Multiple NETGEAR Smart Cloud Switch devices are prone to an
  unauthenticated command injection vulnerability.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"An unauthenticated attacker might inject commands via the
  vulnerable /sqfs/lib/libsal.so.0.0 library used by a CGI application.");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_xref(name:"URL", value:"https://kb.netgear.com/000063641/Security-Advisory-for-Pre-Authentication-Command-Injection-Vulnerability-on-Some-Smart-Switches-PSV-2021-0071");
  script_xref(name:"URL", value:"https://gynvael.coldwind.pl/?lang=en&id=733");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

cpe_list = make_list("cpe:/o:netgear:gc108p_firmware",
                     "cpe:/o:netgear:gc108pp_firmware",
                     "cpe:/o:netgear:gs108tv3_firmware",
                     "cpe:/o:netgear:gs110tppv1_firmware",
                     "cpe:/o:netgear:gs110tpv3_firmware",
                     "cpe:/o:netgear:gs110tupv1_firmware",
                     "cpe:/o:netgear:gs710tupv1_firmware",
                     "cpe:/o:netgear:gs716tp_firmware",
                     "cpe:/o:netgear:gs716tpp_firmware",
                     "cpe:/o:netgear:gs728tppv2_firmware",
                     "cpe:/o:netgear:gs728tpv2_firmware",
                     "cpe:/o:netgear:gs752tppv1_firmware",
                     "cpe:/o:netgear:gs752tpv2_firmware");

if (!infos = get_app_version_from_list(cpe_list: cpe_list, nofork: TRUE))
  exit(0);

cpe = infos["cpe"];
version = infos["version"];

if (cpe == "cpe:/o:netgear:gc108p_firmware" || cpe == "cpe:/o:netgear:gc108pp_firmware") {
  if (version_is_less(version: version, test_version: "1.0.7.3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "1.0.7.3");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (cpe == "cpe:/o:netgear:gs110tupv1_firmware" || cpe == "cpe:/o:netgear:gs710tupv1_firmware") {
  if (version_is_less(version: version, test_version: "1.0.4.3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "1.0.4.3");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (cpe == "cpe:/o:netgear:gs716tp_firmware" || cpe == "cpe:/o:netgear:gs716tpp_firmware") {
  if (version_is_less(version: version, test_version: "1.0.2.3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "1.0.2.3");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (cpe == "cpe:/o:netgear:gs108tv3_firmware" || cpe == "cpe:/o:netgear:gs110tppv1_firmware" ||
    cpe == "cpe:/o:netgear:gs110tpv3_firmware") {
  if (version_is_less(version: version, test_version: "7.0.6.3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "7.0.6.3");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (cpe == "cpe:/o:netgear:gs728tppv2_firmware" || cpe == "cpe:/o:netgear:gs728tpv2_firmware" ||
    cpe == "cpe:/o:netgear:gs752tpv1_firmware" || cpe == "cpe:/o:netgear:gs752tpv2_firmware") {
  if (version_is_less(version: version, test_version: "6.0.6.3")) {
    report = report_fixed_ver(installed_version: version, fixed_version: "6.0.6.3");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);