TeamViewer Connection Reuse Vulnerability (TV-2022-1001) - Linux

# Copyright (C) 2022 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("1.3.6.1.4.1.25623.1.0.147850");
  script_version("2022-03-30T03:03:44+0000");
  script_tag(name:"last_modification", value:"2022-03-30 03:03:44 +0000 (Wed, 30 Mar 2022)");
  script_tag(name:"creation_date", value:"2022-03-25 03:50:13 +0000 (Fri, 25 Mar 2022)");
  script_tag(name:"cvss_base", value:"1.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-03-29 01:09:00 +0000 (Tue, 29 Mar 2022)");

  script_cve_id("CVE-2022-23242");

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

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

  script_name("TeamViewer Connection Reuse Vulnerability (TV-2022-1001) - Linux");

  script_copyright("Copyright (C) 2022 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("General");
  script_dependencies("gb_teamviewer_detect_lin.nasl");
  script_mandatory_keys("TeamViewer/Linux/Ver");

  script_tag(name:"summary", value:"TeamViewer is prone to a connection reuse vulnerability.");

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

  script_tag(name:"insight", value:"TeamViewer Linux does not properly execute a deletion command
  for the connection password in case of a process crash. Knowledge of the crash event and the
  TeamViewer ID as well as either possession of the pre-crash connection password or local
  authenticated access to the machine would have allowed to establish a remote connection by
  reusing the not properly deleted connection password.");

  script_tag(name:"affected", value:"TeamViewer prior to version 15.28.");

  script_tag(name:"solution", value:"Update to version 15.28 or later.");

  script_xref(name:"URL", value:"https://www.teamviewer.com/en-us/trust-center/security-bulletins/TV-2022-1001/");

  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: "15.28")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "15.28", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);