TeamViewer < 14.4.2669 Insufficiently Protected Administrator Credentials Vulnerability

# Copyright (C) 2019 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("1.3.6.1.4.1.25623.1.0.142899");
  script_version("2021-09-08T10:01:41+0000");
  script_tag(name:"last_modification", value:"2021-09-08 10:01:41 +0000 (Wed, 08 Sep 2021)");
  script_tag(name:"creation_date", value:"2019-09-17 07:18:26 +0000 (Tue, 17 Sep 2019)");
  script_tag(name:"cvss_base", value:"7.2");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/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:"2019-09-13 16:29:00 +0000 (Fri, 13 Sep 2019)");

  script_cve_id("CVE-2019-11769");

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

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

  script_name("TeamViewer < 14.4.2669 Insufficiently Protected Administrator Credentials Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("gb_teamviewer_win_detect.nasl");
  script_mandatory_keys("teamviewer/Ver");

  script_tag(name:"summary", value:"TeamViewer is prone to a vulnerability where Windows Admin account credentials
  can be provided to update TeamViewer.");

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

  script_tag(name:"insight", value:"Teamviewer allows local attackers under the same user context as the running
  application to intercept user-provided administrative account credentials during its update process.");

  script_tag(name:"impact", value:"A local attacker might use this vulnerability to conduct a privilege
  escalation attack.");

  script_tag(name:"solution", value:"Update to version 14.4.2669 or later.");

  script_xref(name:"URL", value:"https://blog.to.com/advisory-teamviewer-cve-2019-11769-2/");
  script_xref(name:"URL", value:"https://community.teamviewer.com/t5/Change-Logs/Windows-v14-4-2669-Full-Change-Log/m-p/66731");

  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_is_less(version: version, test_version: "14.4.2669")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "14.4.2669", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);