CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%
OpenVPN is prone to a Denial of Service vulnerability.
# SPDX-FileCopyrightText: 2018 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
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.107310");
script_version("2024-09-25T05:06:11+0000");
script_tag(name:"last_modification", value:"2024-09-25 05:06:11 +0000 (Wed, 25 Sep 2024)");
script_tag(name:"creation_date", value:"2018-05-11 09:50:01 +0200 (Fri, 11 May 2018)");
script_tag(name:"cvss_base", value:"4.6");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.0/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:"2018-06-13 14:27:00 +0000 (Wed, 13 Jun 2018)");
script_tag(name:"qod_type", value:"executable_version_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2018-9336");
script_name("OpenVPN 2.4.x < 2.4.6 DoS Vulnerability - Windows");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2018 Greenbone AG");
script_family("Denial of Service");
script_dependencies("gb_openvpn_win_detect.nasl");
script_mandatory_keys("OpenVPN/Win/Ver");
script_tag(name:"summary", value:"OpenVPN is prone to a Denial of Service vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before
2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive
service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact
including privilege escalation.");
script_tag(name:"affected", value:"OpenVPN version 2.4.x before 2.4.6.");
script_tag(name:"solution", value:"Upgrade to OpenVPN version 2.4.6 or later.");
script_xref(name:"URL", value:"https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24");
exit(0);
}
CPE = "cpe:/a:openvpn:openvpn";
include ("host_details.inc");
include ("version_func.inc");
if (!infos = get_app_version_and_location (cpe:CPE, exit_no_version:TRUE)) {
exit (0);
}
vers = infos ['version'];
path = infos ['location'];
if (vers =~ "^2\.4\." && version_is_less (version:vers, test_version:"2.4.6")){
report = report_fixed_ver (installed_version:vers, fixed_version:"2.4.6", install_path:path);
security_message (port:0, data:report);
exit (0);
}
exit (99);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%