Zoom Client < 5.3.0 RCE Vulnerability (ZSB-21003) - Windows

# 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.

CPE = "cpe:/a:zoom:zoom";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.118235");
  script_version("2021-10-18T15:02:31+0000");
  script_cve_id("CVE-2021-33907");
  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:"last_modification", value:"2021-10-18 15:02:31 +0000 (Mon, 18 Oct 2021)");
  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:"2021-10-06 19:01:00 +0000 (Wed, 06 Oct 2021)");
  script_tag(name:"creation_date", value:"2021-09-29 13:47:33 +0200 (Wed, 29 Sep 2021)");
  script_name("Zoom Client < 5.3.0 RCE Vulnerability (ZSB-21003) - Windows");

  script_tag(name:"summary", value:"Zoom Client is prone to a remote code execution (RCE)
  vulnerability.");

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

  script_tag(name:"insight", value:"The application fails to properly validate the certificate
  information used to sign .msi files when performing an update of the client. This could lead to
  remote code execution in an elevated privileged context.");

  script_tag(name:"affected", value:"All versions of the Zoom Client before 5.3.0.");

  script_tag(name:"solution", value:"Update to version 5.3.0 or later.");

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

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_zoom_client_smb_login_detect.nasl");
  script_mandatory_keys("zoom/client/win/detected");

  script_xref(name:"URL", value:"https://explore.zoom.us/en/trust/security/security-bulletin/");

  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 );

vers = infos["version"];
path = infos["location"];

if( version_is_less( version:vers, test_version:"5.3.0" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"5.3.0", install_path:path );
  security_message( port:0, data:report );
  exit( 0 );
}

exit( 99 );