Cisco IOS XR Software for NCS 6000 Series Devices OSPF Packet Processing Denial of Service Vulnerability (cisco-sa-20160914-iosxr)

# Copyright (C) 2016 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:/o:cisco:ios_xr";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106251");
  script_version("2022-09-23T10:10:45+0000");
  script_tag(name:"last_modification", value:"2022-09-23 10:10:45 +0000 (Fri, 23 Sep 2022)");
  script_tag(name:"creation_date", value:"2016-09-16 11:53:36 +0700 (Fri, 16 Sep 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:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2017-07-30 01:29:00 +0000 (Sun, 30 Jul 2017)");

  script_cve_id("CVE-2016-1433");

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

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

  script_name("Cisco IOS XR Software for NCS 6000 Series Devices OSPF Packet Processing Denial of Service Vulnerability (cisco-sa-20160914-iosxr)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2016 Greenbone Networks GmbH");
  script_family("CISCO");
  script_dependencies("gb_cisco_ios_xr_consolidation.nasl");
  script_mandatory_keys("cisco/ios_xr/detected", "cisco/ios_xr/model");

  script_tag(name:"summary", value:"A vulnerability in the OSPFv3 processing of Cisco IOS XR
  Software for Cisco Network Convergence System (NCS) 6000 Series devices could allow an
  unauthenticated, remote attacker to cause a reload of the OSPFv3 process and result in a limited
  denial of service (DoS) condition on an affected device.");

  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 insufficient logic in the
  processing of crafted OSPFv3 packets. An attacker could exploit this vulnerability by sending
  crafted OSPFv3 packets to be processed by an affected device.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to cause a reload of the
  OSPFv3 process and cause a limited DoS condition on the affected device.");

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

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160914-iosxr");

  exit(0);
}

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

if (!model = get_kb_item("cisco/ios_xr/model"))
  exit(0);

if ("NCS-600" >!< model)
  exit(99);

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

affected = make_list(
  '6.0.0',
  '6.0.1' );

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);