CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%
Avast Internet Security is prone to local code injection vulnerability.
# SPDX-FileCopyrightText: 2017 Greenbone AG
# 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-only
CPE = "cpe:/a:avast:avast_internet_security";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.810904");
script_version("2023-07-14T16:09:27+0000");
script_cve_id("CVE-2017-5567");
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:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:H/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:"2017-04-05 10:13:58 +0530 (Wed, 05 Apr 2017)");
script_name("Avast Internet Security DoubleAgent Attack Local Code Injection Vulnerability");
script_tag(name:"summary", value:"Avast Internet Security is prone to local code injection 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 the product do not
use the Protected Processes feature, and therefore an attacker can enter an
arbitrary Application Verifier Provider DLL under Image File Execution Options
in the registry. The self-protection mechanism is intended to block all local
processes (regardless of privileges) from modifying Image File Execution Options
for this product. This mechanism can be bypassed by an attacker who
temporarily renames Image File Execution Options during the attack.");
script_tag(name:"impact", value:"Successful exploitation will allow local
attacker to execute arbitrary code in the context of the system running the
affected application. This can also result in the attacker gaining complete
control of the affected application.");
script_tag(name:"affected", value:"Avast Internet Security versions prior to 17.0");
script_tag(name:"solution", value:"Upgrade to Avast Internet Security 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://forum.avast.com/index.php?topic=199290.0");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/97017");
script_xref(name:"URL", value:"http://feeds.security-database.com/~r/Last100Alerts/~3/M6mwzAVFo-U/detail.php");
script_xref(name:"URL", value:"https://www.engadget.com/2017/03/21/doubleagent-attack-anti-virus-hijack-your-pc");
script_copyright("Copyright (C) 2017 Greenbone AG");
script_category(ACT_GATHER_INFO);
script_family("General");
script_dependencies("gb_avast_internet_security_detect.nasl");
script_mandatory_keys("Avast/Internet-Security/Win/Ver");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if(!avastVer = get_app_version(cpe:CPE)){
exit(0);
}
if(version_is_less(version:avastVer, test_version:"17.0"))
{
report = report_fixed_ver(installed_version:avastVer, fixed_version:"17.0");
security_message(data:report);
exit(0);
}
exit(99);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%