Cisco IOS ntp Subsystem Unauthorized Access Vulnerability (cisco-sa-20160419-ios)

# SPDX-FileCopyrightText: 2016 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:/o:cisco:ios";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105631");
  script_version("2026-02-02T05:59:28+0000");
  script_tag(name:"last_modification", value:"2026-02-02 05:59:28 +0000 (Mon, 02 Feb 2026)");
  script_tag(name:"creation_date", value:"2016-05-03 17:30:06 +0200 (Tue, 03 May 2016)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-12-03 03:20:00 +0000 (Sat, 03 Dec 2016)");

  script_cve_id("CVE-2016-1384");

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

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

  script_name("Cisco IOS ntp Subsystem Unauthorized Access Vulnerability (cisco-sa-20160419-ios)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("CISCO");
  script_dependencies("gb_cisco_ios_consolidation.nasl");
  script_mandatory_keys("cisco/ios/detected");

  script_tag(name:"summary", value:"A vulnerability in the ntp subsystem of Cisco IOS Software
  could allow an unauthenticated, remote attacker to mobilize ntp associations.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");

  script_tag(name:"insight", value:"The vulnerability is due to missing authorization checks on
  certain ntp packets. An attacker could exploit this vulnerability by ingressing malicious packets
  to the ntp daemon.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to control the time of the
  affected device.");

  script_tag(name:"solution", value:"See the referenced vendor advisory for a solution.");

  script_xref(name:"URL", value:"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160419-ios");

  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if( ! version = get_app_version( cpe:CPE, nofork:TRUE ) )
  exit( 0 );

affected = make_list(
  "15.0(1)EZ",
  "15.1(1)S",
  "15.1(1)S1",
  "15.1(1)S2",
  "15.1(1)SY",
  "15.1(1)XO",
  "15.1(2)S",
  "15.1(2)S1",
  "15.1(2)S2",
  "15.1(2)SG",
  "15.1(2)SY",
  "15.1(3)MRA",
  "15.1(3)S",
  "15.1(3)S0a",
  "15.1(3)S1",
  "15.1(3)S2",
  "15.1(3)S3",
  "15.1(3)S4",
  "15.1(3)S5",
  "15.1(3)S5a",
  "15.1(3)S6",
  "15.2(1)E",
  "15.2(2)E",
  "15.2(3)E",
  "15.2(3)E1",
  "15.2(3)E2",
  "15.2(3)E3",
  "15.2(3)E4",
  "15.2(4)E",
  "15.2(4)E1",
  "15.2(4)E2",
  "15.2(2)EA",
  "15.2(3)EA",
  "15.2(4)EA",
  "15.2(2)EB",
  "15.2(1)EY",
  "15.2(3)GC",
  "15.2(4)GC",
  "15.2(3)GCA",
  "15.2(4)JA",
  "15.2(4)JAZ",
  "15.2(4)JB",
  "15.2(4)JN",
  "15.2(4)M",
  "15.2(2)S",
  "15.2(4)S",
  "15.2(2)SA",
  "15.2(2)SC",
  "15.2(2)SNG",
  "15.2(2)SNH",
  "15.2(2)SNH1",
  "15.2(2)SNI",
  "15.2(1)SY",
  "15.2(2)SY",
  "15.2(3)T",
  "15.2(3)XA",
  "15.2(4)XB",
  "15.3(3)JA",
  "15.3(3)JAA",
  "15.3(3)JAB",
  "15.3(3)JAX",
  "15.3(3)JB",
  "15.3(3)JBB",
  "15.3(3)JC",
  "15.3(3)JD",
  "15.3(3)JN",
  "15.3(3)JNB1",
  "15.3(3)JNC",
  "15.3(3)JNP",
  "15.3(3)M",
  "15.3(1)S",
  "15.3(2)S",
  "15.3(3)S",
  "15.3(3)S1",
  "15.3(3)S2",
  "15.3(3)S3",
  "15.3(3)S4",
  "15.3(3)S5",
  "15.3(3)S6",
  "15.3(3)S7",
  "15.3(3)S8",
  "15.3(0)SY",
  "15.3(1)SY",
  "15.3(1)T",
  "15.3(2)T",
  "15.3(3)XB12",
  "15.4(1)CG",
  "15.4(2)CG",
  "15.4(3)M",
  "15.4(3)M1",
  "15.4(3)M2",
  "15.4(3)M3",
  "15.4(3)M4",
  "15.4(3)M5",
  "15.4(3)M6",
  "15.4(1)S",
  "15.4(2)S",
  "15.4(3)S",
  "15.4(2)SN",
  "15.4(1)T",
  "15.4(2)T",
  "15.5(3)M",
  "15.5(3)M0a",
  "15.5(3)M1",
  "15.5(3)M2",
  "15.5(1)S",
  "15.5(1)S1",
  "15.5(1)S2",
  "15.5(1)S3",
  "15.5(1)S4",
  "15.5(2)S",
  "15.5(2)S1",
  "15.5(2)S2",
  "15.5(2)S3",
  "15.5(3)S",
  "15.5(3)S0a",
  "15.5(3)S1",
  "15.5(3)S1a",
  "15.5(3)S2",
  "15.5(3)SN",
  "15.5(1)T",
  "15.5(2)T",
  "15.5(2)XB",
  "15.6(1)S",
  "15.6(1)S1",
  "15.6(1)SN",
  "15.6(1)SN1",
  "15.6(1)SN2",
  "15.6(1)T",
  "15.6(2)T" );

foreach af ( affected ) {
  if( version == af ) {
    report = report_fixed_ver( installed_version:version, fixed_version:"See advisory" );
    security_message( port:0, data:report );
    exit( 0 );
  }
}

exit( 99 );