Zoom Client <= 4.6.11 Multiple Vulnerabilities (Apr 2020) - 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("1.3.6.1.4.1.25623.1.0.117737");
  script_version("2021-10-20T08:03:27+0000");
  script_cve_id("CVE-2020-11876", "CVE-2020-11877");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"last_modification", value:"2021-10-20 08:03:27 +0000 (Wed, 20 Oct 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-05-06 19:15:00 +0000 (Wed, 06 May 2020)");
  script_tag(name:"creation_date", value:"2021-10-19 12:25:06 +0000 (Tue, 19 Oct 2021)");

  script_name("Zoom Client <= 4.6.11 Multiple Vulnerabilities (Apr 2020) - Windows");

  script_tag(name:"summary", value:"The Zoom Client is prone to multiple vulnerabilities.");

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

  script_tag(name:"insight", value:"The following flaws exist:

  - CVE-2020-11876: airhost.exe in Zoom Client for Meetings uses the SHA-256 hash of
  0123425234234fsdfsdr3242 for initialization of an OpenSSL EVP AES-256 CBC context. NOTE: the
  vendor states that this initialization only occurs within unreachable code.

  - CVE-2020-11877: airhost.exe in Zoom Client for Meetings uses 3423423432325249 as the
  Initialization Vector (IV) for AES-256 CBC encryption. NOTE: the vendor states that this IV is
  used only within unreachable code.

  - No CVE: Usage of the OpenSSL component with known vulnerabilities in zData.dll

  - No CVE: Concatenation of SQL Statements in zData.dll

  - No CVE: Potential buffer overflow in Zzhost.dll

  - No CVE: Windows Registry dump in zCrashReport.exe

  - No CVE: Screen Capture Function in Crash Reporter in zCrashReport.dll

  - No CVE: Usage of the curl and libssh2 components with known vulnerabilities in Airhost.exe

  - No CVE: Usage of the curl component with known vulnerabilities in zWebService.dll and tp.dll

  - No CVE: Usage of the libjpeg-turbo component with known vulnerabilities in turbojpeg.dll");

  script_tag(name:"affected", value:"Zoom Client versions 4.6.11 and prior on Windows.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year
  since the disclosure of this vulnerability. Likely none will be provided anymore. General solution
  options are to upgrade to a newer release, disable respective features, remove the product or
  replace the product by another one.");

  script_tag(name:"solution_type", value:"WillNotFix");
  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://ths.sh/posts/zoomzoo/");

  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_equal( version:vers, test_version:"4.6.11" ) ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:"None", install_path:path );
  security_message( port:0, data:report );
  exit( 0 );
}

exit( 99 );