Huawei Data Communication: Deploying RSVP Authentication

# Copyright (C) 2020 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.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.150286");
  script_version("2022-08-31T10:10:28+0000");
  script_tag(name:"last_modification", value:"2022-08-31 10:10:28 +0000 (Wed, 31 Aug 2022)");
  script_tag(name:"creation_date", value:"2020-07-13 10:44:31 +0000 (Mon, 13 Jul 2020)");
  script_tag(name:"cvss_base", value:"0.0");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:H/Au:S/C:N/I:N/A:N");
  script_tag(name:"qod", value:"97");

  script_name("Huawei Data Communication: Deploying RSVP Authentication");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 Greenbone Networks GmbH");
  script_family("Policy");
  script_dependencies("compliance_tests.nasl", "vrp_display_mpls_rsvp_te_interface.nasl");
  script_mandatory_keys("Compliance/Launch");
  script_exclude_keys("huawei/vrp/yunshan/detected");

  script_tag(name:"summary", value:"RSVP MD5 authentication is deployed to prevent attackers from
attempting to use protocols on the control plane to destroy entries on which forwarding
depends, such as routes.");

  exit(0);
}

include("ssh_func.inc");
include("policy_functions.inc");
include("list_array_func.inc");

major_version = get_kb_item("huawei/vrp/ssh-login/major_version");

cmd = "display mpls rsvp-te interface; display current-configuration interface xxx";
title = "Deploying RSVP Authentication";
solution = "Deploy RSVP MD5 authentication.";
test_type = "SSH_Cmd";
default = "mpls rsvp-te authentication cipher enabled for all mpls rsvp-te interfaces";

if(get_kb_item("Policy/vrp/installed/ERROR")){
  value = "Error";
  compliant = "incomplete";
  comment = "No VRP device detected.";
}else if(!major_version){
  value = "Error";
  compliant = "incomplete";
  comment = "Can not determine version of VRP device.";
}else if(major_version !~ "^8"){ # nb: Test applies for VRP V8 devices only
  # Don't report result if not applicable.
  exit(0);
}else if(get_kb_item("Policy/vrp/ssh/ERROR")){
  value = "Error";
  compliant = "incomplete";
  comment = "No SSH connection to VRP device.";
}else if(get_kb_item("Policy/vrp/mpls/rsvp-te/interface/empty")){
  value = "None";
  compliant = "yes";
  comment = "No mpls rsvp-te interfaces detected.";
}else{
  mpls_interfaces = get_kb_item("Policy/vrp/mpls/rsvp-te/interface");
  interface_grep = egrep(string:mpls_interfaces, pattern:"Interface: ");
  if(!interface_grep){
    value = "None";
    compliant = "yes";
    comment = "No mpls rsvp-te interfaces detected.";
  }else{
    foreach interface(split(interface_grep, keep:FALSE)){
      interfaces_name = eregmatch(string:interface, pattern:"Interface:\s+([A-Z,a-z,0-9,/,_,-]+)");
      if(!sock = ssh_login_or_reuse_connection()){
        value = "Error";
        compliant = "incomplete";
        comment = "No SSH connection to host";
        break;
      }
      cmd = "display current-configuration interface " + interfaces_name[1];
      ret = ssh_cmd(socket:sock, cmd:cmd, return_errors:FALSE, pty:TRUE, nosh:TRUE, timeout:20,
                    retry:10, force_reconnect:TRUE, clear_buffer:TRUE);
      if(ret !~ "mpls rsvp-te authentication cipher"){
        value = "mpls rsvp-te authentication cipher not enabled for all mpls rsvp-te interfaces";
        compliant = "no";
        comment += interfaces_name[1] + " ";
      }
    }
    if(!value){
      value = "mpls rsvp-te authentication cipher enabled for all mpls rsvp-te interfaces";
      compliant = "yes";
    }
  }
}

policy_reporting(result:value, default:default, compliant:compliant, fixtext:solution,
  type:test_type, test:cmd, info:comment);
policy_set_kbs(type:test_type, cmd:cmd, default:default, solution:solution, title:title,
  value:value, compliant:compliant);

exit(0);