TeamViewer Multiple Vulnerabilities (Aug 2021) - Mac OS X

# 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:teamviewer:teamviewer";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.146979");
  script_version("2023-10-20T16:09:12+0000");
  script_tag(name:"last_modification", value:"2023-10-20 16:09:12 +0000 (Fri, 20 Oct 2023)");
  script_tag(name:"creation_date", value:"2021-10-26 09:57:26 +0000 (Tue, 26 Oct 2021)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-10-27 17:48:00 +0000 (Wed, 27 Oct 2021)");

  script_cve_id("CVE-2021-34858", "CVE-2021-34859");

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

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

  script_name("TeamViewer Multiple Vulnerabilities (Aug 2021) - Mac OS X");

  script_copyright("Copyright (C) 2021 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("General");
  script_dependencies("gb_teamviewer_detect_macosx.nasl");
  script_mandatory_keys("TeamViewer/MacOSX/Version");

  script_tag(name:"summary", value:"TeamViewer 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 vulnerabilities exist:

  - CVE-2021-34858: Installations with existing TV recording files (TVS) are vulnerable to a
  problem in file parsing that could allow someone to execute arbitrary code and could cause the
  binary to crash. User interaction as well as a third-party vulnerability are required for
  remote exploitation.

  - CVE-2021-34859: In some circumstances, a problem in shared memory management could cause the
  TeamViewer service to perform an out-of-bounds read. Access to the machine is required for
  exploitation.");

  script_tag(name:"affected", value:"TeamViewer 15.x prior to version 15.21.4.");

  script_tag(name:"solution", value:"Update to version 15.21.4 or later.");

  script_xref(name:"URL", value:"https://community.teamviewer.com/English/discussion/117794/august-updates-security-patches/p1");
  script_xref(name:"URL", value:"https://www.zerodayinitiative.com/advisories/ZDI-21-1003/");

  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);

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

if (version_in_range(version: version, test_version: "15.0", test_version2: "15.21.3")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "15.21.4", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);