Avast Free Antivirus Heap-Based Buffer Overflow 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("1.3.6.1.4.1.25623.1.0.808058");
  script_version("2021-10-14T09:01:39+0000");
  script_cve_id("CVE-2015-8620");
  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:"last_modification", value:"2021-10-14 09:01:39 +0000 (Thu, 14 Oct 2021)");
  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:"2021-03-26 20:37:00 +0000 (Fri, 26 Mar 2021)");
  script_tag(name:"creation_date", value:"2016-06-03 18:38:44 +0530 (Fri, 03 Jun 2016)");
  script_name("Avast Free Antivirus Heap-Based Buffer Overflow Vulnerability");

  script_tag(name:"summary", value:"Avast Free Antivirus is prone to heap-based buffer overflow 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 in avast virtualization
  driver (aswSnx.sys) that handles 'Sandbox' and 'DeepScreen' functionality
  improperly.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker
  to elevate privileges from any account type and execute code as SYSTEM.");

  script_tag(name:"affected", value:"Avast Free Antivirus version before
  11.1.2253.");

  script_tag(name:"solution", value:"Upgrade to Avast Free Antivirus version
  11.1.2253 or later.");

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

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

  script_xref(name:"URL", value:"http://seclists.org/fulldisclosure/2016/Feb/94");
  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_is_less( version:version, test_version:"11.1.2253" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"11.1.2253", install_path:location );
  security_message( data:report, port:0 );
  exit( 0 );
}

exit( 99 );