Cisco NX-OS Border Gateway Protocol Denial of Service Vulnerability (cisco-sa-20161005-bgp)

# 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:nx-os";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.107097");
  script_version("2022-12-26T10:12:01+0000");
  script_tag(name:"last_modification", value:"2022-12-26 10:12:01 +0000 (Mon, 26 Dec 2022)");
  script_tag(name:"creation_date", value:"2016-10-06 09:39:36 +0700 (Thu, 06 Oct 2016)");
  script_tag(name:"cvss_base", value:"7.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-25 20:15:00 +0000 (Tue, 25 Aug 2020)");

  script_cve_id("CVE-2016-1454");

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

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

  script_name("Cisco NX-OS Border Gateway Protocol Denial of Service Vulnerability (cisco-sa-20161005-bgp)");

  script_category(ACT_GATHER_INFO);

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

  script_tag(name:"summary", value:"A vulnerability in the Border Gateway Protocol (BGP)
  implementation of Cisco NX-OS System Software could allow an unauthenticated, remote attacker to
  cause a denial of service (DoS) condition due to the device unexpectedly reloading.");

  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 incomplete input validation of the
  BGP update messages. An attacker could exploit this vulnerability by sending a crafted BGP update
  message to the targeted device.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to cause the switch to
  reload unexpectedly.");

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

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-bgp");

  exit(0);
}

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

if( ! device = get_kb_item( "cisco/nx_os/device" ) )
  exit( 0 );

if( "Nexus" >!< device )
  exit( 0 );

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

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

if( "1000V" >< nx_model ) {
  affected = make_list(
    "4.0(4)SV1(1)",
    "4.0(4)SV1(2)",
    "4.0(4)SV1(3)",
    "4.0(4)SV1(3a)",
    "4.0(4)SV1(3b)",
    "4.0(4)SV1(3c)",
    "4.0(4)SV1(3d)",
    "4.2(1)SV1(4)",
    "4.2(1)SV1(4a)",
    "4.2(1)SV1(4b)",
    "4.2(1)SV1(5.1)",
    "4.2(1)SV1(5.1a)",
    "4.2(1)SV1(5.2)",
    "4.2(1)SV1(5.2b)",
    "4.2(1)SV2(1.1)",
    "4.2(1)SV2(1.1a)",
    "4.2(1)SV2(2.1)",
    "4.2(1)SV2(2.1a)",
    "5.2(1)SV3(1.1)",
    "5.2(1)SV3(1.10)",
    "5.2(1)SV3(1.3)",
    "5.2(1)SV3(1.4)",
    "5.2(1)SV3(1.5a)",
    "5.2(1)SV3(1.5b)",
    "5.2(1)SV3(1.6)"
  );
}

if( nx_model =~ "^C?3[0-9]+" ) {
  affected = make_list(
    "5.0(3)U1(1)",
    "5.0(3)U1(1a)",
    "5.0(3)U1(1b)",
    "5.0(3)U1(1d)",
    "5.0(3)U1(2)",
    "5.0(3)U1(2a)",
    "5.0(3)U2(1)",
    "5.0(3)U2(2)",
    "5.0(3)U2(2a)",
    "5.0(3)U2(2b)",
    "5.0(3)U2(2c)",
    "5.0(3)U2(2d)",
    "5.0(3)U3(1)",
    "5.0(3)U3(2)",
    "5.0(3)U3(2a)",
    "5.0(3)U3(2b)",
    "5.0(3)U4(1)",
    "5.0(3)U5(1)",
    "5.0(3)U5(1a)",
    "5.0(3)U5(1b)",
    "5.0(3)U5(1c)",
    "5.0(3)U5(1d)",
    "5.0(3)U5(1e)",
    "5.0(3)U5(1f)",
    "5.0(3)U5(1g)",
    "5.0(3)U5(1h)",
    "6.0(2)A6(1)",
    "6.0(2)A6(2)",
    "6.0(2)A6(3)",
    "6.0(2)A6(4)",
    "6.0(2)A6(5)",
    "6.0(2)A6(6)",
    "6.0(2)A6(7)",
    "6.0(2)A6(8)",
    "6.0(2)A7(1)",
    "6.0(2)A7(2)",
    "6.0(2)A7(2a)",
    "6.0(2)A8(2)",
    "6.0(2)U1(1)",
    "6.0(2)U1(1a)",
    "6.0(2)U1(2)",
    "6.0(2)U1(3)",
    "6.0(2)U1(4)",
    "6.0(2)U2(1)",
    "6.0(2)U2(2)",
    "6.0(2)U2(3)",
    "6.0(2)U2(4)",
    "6.0(2)U2(5)",
    "6.0(2)U2(6)",
    "6.0(2)U3(1)",
    "6.0(2)U3(2)",
    "6.0(2)U3(3)",
    "6.0(2)U3(4)",
    "6.0(2)U3(5)",
    "6.0(2)U4(1)",
    "6.0(2)U4(2)",
    "6.0(2)U4(3)",
    "6.0(2)U5(1)",
    "6.0(2)U5(1.41)",
    "6.0(2)U5(2)",
    "6.0(2)U5(3)",
    "6.0(2)U5(4)",
    "6.0(2)U6(0.46)",
    "6.0(2)U6(1)",
    "6.0(2)U6(2)",
    "6.0(2)U6(3)",
    "6.0(2)U6(4)",
    "6.0(2)U6(5)",
    "6.0(2)U6(6)",
    "6.0(2)U6(7)",
    "6.0(2)U6(8)",
    "7.0(3)I2(0.373)"
  );
}

if( nx_model =~ "^C?5[0-9]+" ) {
  affected = make_list(
    "4.0(0)N1(1a)",
    "4.0(0)N1(2)",
    "4.0(0)N1(2a)",
    "4.0(1a)N1(1)",
    "4.0(1a)N1(1a)",
    "4.0(1a)N2(1)",
    "4.0(1a)N2(1a)",
    "4.1(3)N1(1)",
    "4.1(3)N1(1a)",
    "4.1(3)N2(1)",
    "4.1(3)N2(1a)",
    "4.2(1)N1(1)",
    "4.2(1)N2(1)",
    "4.2(1)N2(1a)",
    "5.0(2)N1(1)",
    "5.0(2)N2(1)",
    "5.0(2)N2(1a)",
    "5.0(3)N1(1c)",
    "5.0(3)N2(1)",
    "5.0(3)N2(2)",
    "5.0(3)N2(2a)",
    "5.0(3)N2(2b)",
    "5.1(3)N1(1)",
    "5.1(3)N1(1a)",
    "5.1(3)N2(1)",
    "5.1(3)N2(1a)",
    "5.1(3)N2(1b)",
    "5.1(3)N2(1c)",
    "5.2(1)N1(1)",
    "5.2(1)N1(1a)",
    "5.2(1)N1(1b)",
    "5.2(1)N1(2)",
    "5.2(1)N1(2a)",
    "5.2(1)N1(3)",
    "5.2(1)N1(4)",
    "5.2(1)N1(5)",
    "5.2(1)N1(6)",
    "5.2(1)N1(7)",
    "5.2(1)N1(8)",
    "5.2(1)N1(8a)",
    "5.2(9)N1(1)",
    "6.0(2)N1(1)",
    "6.0(2)N1(2)",
    "6.0(2)N1(2a)",
    "6.0(2)N2(1)",
    "6.0(2)N2(1b)",
    "6.0(2)N2(2)",
    "6.0(2)N2(3)",
    "6.0(2)N2(4)",
    "6.0(2)N2(5)",
    "6.0(2)N2(5a)",
    "6.0(2)N2(6)",
    "6.0(2)N2(7)",
    "7.0(0)N1(1)",
    "7.0(1)N1(1)",
    "7.0(2)N1(1)",
    "7.0(3)N1(1)",
    "7.0(5)N1(1)",
    "7.0(5)N1(1a)",
    "7.0(6)N1(1)",
    "7.0(7)N1(1)",
    "7.0(8)N1(1)",
    "7.1(1)N1(1)",
    "7.1(2)N1(1)",
    "7.1(3)N1(1)",
    "7.1(3)N1(2)",
    "7.1(4)N1(1)",
    "7.2(0)N1(1)",
    "7.2(1)N1(1)"
  );
}

if( nx_model =~ "^C?6[0-9]+" ) {
  affected = make_list(
    "6.0(2)N1(2)",
    "6.0(2)N1(2a)",
    "6.0(2)N2(1)",
    "6.0(2)N2(1b)",
    "6.0(2)N2(2)",
    "6.0(2)N2(3)",
    "6.0(2)N2(4)",
    "6.0(2)N2(5)",
    "6.0(2)N2(5a)",
    "6.0(2)N2(6)",
    "6.0(2)N2(7)",
    "7.0(0)N1(1)",
    "7.0(1)N1(1)",
    "7.0(2)N1(1)",
    "7.0(3)N1(1)",
    "7.0(4)N1(1)",
    "7.0(5)N1(1)",
    "7.0(5)N1(1a)",
    "7.0(6)N1(1)",
    "7.0(7)N1(1)",
    "7.1(0)N1(1a)",
    "7.1(0)N1(1b)",
    "7.1(1)N1(1)",
    "7.1(2)N1(1)",
    "7.1(3)N1(1)",
    "7.2(0)N1(1)",
    "7.2(1)N1(1)"
  );
}

if( nx_model =~ "^C?7[0-9]+" ) {
  affected = make_list(
    "4.1.(2)",
    "4.1.(3)",
    "4.1.(4)",
    "4.1.(5)",
    "4.2(3)",
    "4.2(4)",
    "4.2(6)",
    "4.2(8)",
    "4.2.(2a)",
    "5.0(2a)",
    "5.0(3)",
    "5.0(5)",
    "5.1(1)",
    "5.1(1a)",
    "5.1(3)",
    "5.1(4)",
    "5.1(5)",
    "5.1(6)",
    "5.2(1)",
    "5.2(3a)",
    "5.2(4)",
    "5.2(5)",
    "5.2(7)",
    "5.2(9)",
    "6.0(1)",
    "6.0(2)",
    "6.0(3)",
    "6.0(4)",
    "6.1(1)",
    "6.1(2)",
    "6.1(3)",
    "6.1(4)",
    "6.1(4a)",
    "6.1(5)",
    "6.2(10)",
    "6.2(12)",
    "6.2(14)S1",
    "6.2(2)",
    "6.2(2a)",
    "6.2(6)",
    "6.2(6b)",
    "6.2(8)",
    "6.2(8a)",
    "6.2(8b)",
    "7.2(0)N1(0.1)"
  );
}

if( nx_model =~ "^C?9[0-9]{3}" ) {
  affected = make_list(
    "11.0(1b)",
    "11.0(1c)",
    "11.0(1d)",
    "11.0(1e)",
    "11.0(2j)",
    "11.0(2m)",
    "11.0(3f)",
    "11.0(3i)",
    "11.0(3k)",
    "11.0(3n)",
    "11.0(4h)",
    "11.0(4o)",
    "11.1(1c)",
    "11.1(1j)",
    "11.1(1o)",
    "11.1(1r)",
    "11.1(1s)",
    "11.1(2h)",
    "11.1(2i)",
    "11.1(3f)",
    "11.1(4e)",
    "11.1(4f)",
    "11.1(4g)",
    "11.1(4i)",
    "11.1(4l)",
    "11.1(4m)",
    "11.2(1m)",
    "11.2(2g)",
    "11.2(2h)",
    "11.2(2i)",
    "11.2(3c)",
    "11.2(3e)",
    "11.2(3h)",
    "11.3(1i)",
    "11.3(2f)",
    "11.3(2h)",
    "11.3(2i)",
    "6.1(2)I2(1)",
    "6.1(2)I2(2)",
    "6.1(2)I2(2a)",
    "6.1(2)I2(2b)",
    "6.1(2)I2(3)",
    "6.1(2)I3(1)",
    "6.1(2)I3(2)",
    "6.1(2)I3(3)",
    "6.1(2)I3(3.78)",
    "6.1(2)I3(4)",
    "7.0(3)",
    "7.0(3)I1(1)",
    "7.0(3)I1(1a)",
    "7.0(3)I1(1b)",
    "7.0(3)I1(2)"
  );
}

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 );