Avast Free Antivirus Sandbox Escape Security Bypass Vulnerability

# Copyright (C) 2016 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:avast:antivirus";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.810203");
  script_version("2021-10-12T14:01:30+0000");
  script_cve_id("CVE-2016-4025");
  script_tag(name:"cvss_base", value:"2.1");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2021-10-12 14:01:30 +0000 (Tue, 12 Oct 2021)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-11-04 19:03:00 +0000 (Fri, 04 Nov 2016)");
  script_tag(name:"creation_date", value:"2016-11-18 14:57:52 +0530 (Fri, 18 Nov 2016)");
  script_name("Avast Free Antivirus Sandbox Escape Security Bypass Vulnerability");

  script_tag(name:"summary", value:"Avast Free Antivirus is prone to a security bypass vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to a design flaw in the
  Avast DeepScreen feature.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker
  to escape from a fully sandboxed process, furthermore attacker can also freely
  modify or infect or encrypt any existing file in the case of a ransomware attack.");

  script_tag(name:"affected", value:"Avast Free Antivirus 11.x through 11.1.2262.");

  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:"registry");

  script_xref(name:"URL", value:"https://labs.nettitude.com/blog/escaping-avast-sandbox-using-single-ioctl-cve-2016-4025");
  script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
  script_category(ACT_GATHER_INFO);
  script_family("General");
  script_dependencies("gb_avast_av_detect_win.nasl");
  script_mandatory_keys("avast/antivirus_free/detected");

  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 =~ "^11" && version_in_range( version:version, test_version:"11.0", test_version2:"11.1.2262" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"WillNotFix", install_path:location );
  security_message( data:report );
  exit( 0 );
}

exit( 99 );