Junos BGP UPDATE DoS Vulnerability

2017-04-13T00:00:00
ID OPENVAS:1361412562310106752
Type openvas
Reporter This script is Copyright (C) 2017 Greenbone Networks GmbH
Modified 2018-10-26T00:00:00

Description

Junos OS is prone to denial of service vulnerability when receiving BGP UPDATE messages.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_junos_jsa10778.nasl 12106 2018-10-26 06:33:36Z cfischer $
#
# Junos BGP UPDATE DoS Vulnerability
#
# Authors:
# Christian Kuersteiner <christian.kuersteiner@greenbone.net>
#
# Copyright:
# Copyright (c) 2017 Greenbone Networks GmbH
#
# 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:juniper:junos';

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106752");
  script_version("$Revision: 12106 $");
  script_tag(name:"last_modification", value:"$Date: 2018-10-26 08:33:36 +0200 (Fri, 26 Oct 2018) $");
  script_tag(name:"creation_date", value:"2017-04-13 08:24:49 +0200 (Thu, 13 Apr 2017)");
  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_cve_id("CVE-2017-2313");

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

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

  script_name("Junos BGP UPDATE DoS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_family("JunOS Local Security Checks");
  script_copyright("This script is Copyright (C) 2017 Greenbone Networks GmbH");
  script_dependencies("gb_ssh_junos_get_version.nasl", "gb_junos_snmp_version.nasl");
  script_mandatory_keys("Junos/Version");

  script_tag(name:"summary", value:"Junos OS is prone to denial of service vulnerability when receiving BGP
UPDATE messages.");

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

  script_tag(name:"insight", value:"Junos OS 15.1 and later releases may be impacted by the receipt of a
crafted BGP UPDATE which can lead to an rpd (routing process daemon) crash and restart.  Repeated crashes of the
rpd daemon can result in an extended denial of service condition.");

  script_tag(name:"impact", value:"An attacker may cause a denial of service condition.");

  script_tag(name:"affected", value:"Junos OS 15.1, 16.1 and 16.2");

  script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper.");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10778");

  exit(0);
}

include("host_details.inc");
include("revisions-lib.inc");
include("version_func.inc");

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

if (version =~ "^15") {
  if ((revcomp(a: version, b: "15.1F2-S15") < 0) &&
      (revcomp(a: version, b: "15.1F") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1F2-S15");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "15.1R6") < 0) &&
           (revcomp(a: version, b: "15.1R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1R6");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "15.1X49-D78") < 0) &&
           (revcomp(a: version, b: "15.1X49") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1X49-D78");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "15.1X53-D63") < 0) &&
           (revcomp(a: version, b: "15.1X53") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1X53-D63");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^16") {
  if (revcomp(a: version, b: "16.1R3-S3") < 0) {
    report = report_fixed_ver(installed_version: version, fixed_version: "16.1R3-S3");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "16.2R2") < 0) &&
           (revcomp(a: version, b: "16.2") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "16.2R2");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);