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
AI Score
Confidence
Low
EPSS
Percentile
92.0%
# 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:ntp:ntp";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.809781");
script_version("2024-02-20T05:05:48+0000");
script_cve_id("CVE-2014-9293");
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:"2024-02-20 05:05:48 +0000 (Tue, 20 Feb 2024)");
script_tag(name:"creation_date", value:"2017-01-16 17:55:06 +0530 (Mon, 16 Jan 2017)");
script_name("NTP.org 'ntpd' Insufficient Entropy Security Weakness Brute Force Attack Vulnerability");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2017 Greenbone AG");
script_family("General");
script_dependencies("ntp_open.nasl", "gb_ntp_detect_lin.nasl");
script_mandatory_keys("ntpd/version/detected");
script_xref(name:"URL", value:"http://www.kb.cert.org/vuls/id/852879");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/71757");
script_xref(name:"URL", value:"http://bugs.ntp.org/show_bug.cgi?id=2665");
script_tag(name:"summary", value:"NTP.org's reference implementation of NTP server, ntpd is prone to a brute force attack 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 error in 'config_auth'
function in ntpd when an auth key is not configured, improperly generates a key
and makes it easier for remote attackers to conduct brute force attack.");
script_tag(name:"impact", value:"Successful exploitation will allow remote
attackers to defeat cryptographic protection mechanisms via a brute-force attack.");
script_tag(name:"affected", value:"NTPd version prior to 4.2.7p11.");
script_tag(name:"solution", value:"Update to version 4.2.7p11 or later.");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("version_func.inc");
include("revisions-lib.inc");
include("host_details.inc");
if (isnull(port = get_app_port(cpe: CPE)))
exit(0);
if (!infos = get_app_full(cpe: CPE, port: port, exit_no_version: TRUE))
exit(0);
version = infos["version"];
location = infos["location"];
proto = infos["proto"];
if (revcomp(a: version, b: "4.2.7p11") < 0) {
report = report_fixed_ver(installed_version: version, fixed_version: "4.2.7p11", install_path: location);
security_message(port: port, proto: proto, data: report);
exit(0);
}
exit(99);