CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
86.3%
Avast Free Antivirus is prone to multiple vulnerabilities.
# Copyright (C) 2017 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("1.3.6.1.4.1.25623.1.0.811020");
script_version("2022-04-13T11:57:07+0000");
script_cve_id("CVE-2017-8308", "CVE-2017-8307");
script_tag(name:"cvss_base", value:"7.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_tag(name:"last_modification", value:"2022-04-13 11:57:07 +0000 (Wed, 13 Apr 2022)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
script_tag(name:"creation_date", value:"2017-05-05 12:59:15 +0530 (Fri, 05 May 2017)");
script_name("Avast Free Antivirus Multiple Vulnerabilities");
script_tag(name:"summary", value:"Avast Free Antivirus 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:"Multiple flaws exist due to design errors in
the application. Using LPC interface API exposed by the AvastSVC.exe Windows
service it is possible to delete arbitrary file, replace arbitrary file and
launch predefined binaries.");
script_tag(name:"impact", value:"Successful exploitation will allow attackers
to conduct a denial-of-service condition, execute arbitrary code and bypass
certain security features on the affected system.");
script_tag(name:"affected", value:"Avast Free Antivirus version prior to
version 17.0.");
script_tag(name:"solution", value:"Upgrade to Avast Free Antivirus version
17.0 or later.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"registry");
script_xref(name:"URL", value:"https://www.trustwave.com/Resources/Security-Advisories/Advisories/Multiple-Vulnerabilities-in-Avast-Antivirus/?fid=9201");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/98084");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/98086");
script_copyright("Copyright (C) 2017 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:"17.0" ) ) {
report = report_fixed_ver( installed_version:version, fixed_version:"17.0", install_path:location );
security_message( data:report, port:0 );
exit( 0 );
}
exit( 99 );
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
86.3%