Junos Embedthis Appweb Server DoS Vulnerability

2016-01-18T00:00:00
ID OPENVAS:1361412562310106063
Type openvas
Reporter This script is Copyright (C) 2016 Greenbone Networks GmbH
Modified 2018-11-20T00:00:00

Description

Junos OS is prone to a Denial of Service vulnerability with J-Web enabled.

                                        
                                            ###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_junos_cve-2016-1258.nasl 12431 2018-11-20 09:21:00Z asteins $
#
# Junos Embedthis Appweb Server DoS Vulnerability
#
# Authors:
# Christian Kuersteiner <christian.kuersteiner@greenbone.net>
#
# Copyright:
# Copyright (c) 2016 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("1.3.6.1.4.1.25623.1.0.106063");
  script_version("$Revision: 12431 $");
  script_tag(name:"last_modification", value:"$Date: 2018-11-20 10:21:00 +0100 (Tue, 20 Nov 2018) $");
  script_tag(name:"creation_date", value:"2016-01-18 09:17:30 +0700 (Mon, 18 Jan 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:"qod_type", value:"package");

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

  script_cve_id("CVE-2016-1258");

  script_name("Junos Embedthis Appweb Server DoS Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_family("JunOS Local Security Checks");
  script_copyright("This script is Copyright (C) 2016 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 a Denial of Service vulnerability with
J-Web enabled.");

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

  script_tag(name:"insight", value:"A denial of service vulnerability in Embedthis Appweb Server
while processing certain malformed HTTP requests may allow a remote unauthenticated user to crash
the J-Web service.");

  script_tag(name:"impact", value:"A network based unauthenticated attacker can cause the J-Web
service on a device to become unavailable.");

  script_tag(name:"affected", value:"Junos OS 12.1, 12.3, 13.2, 13.3, 14.1 and 14.2");

  script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper. As
a workaround disable J-Web.");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10720");

  exit(0);
}

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

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

if (version =~ "^12") {
  if ((revcomp(a: version, b: "12.1X44-D60") < 0) &&
      (revcomp(a: version, b: "12.1X44") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X46-D45") < 0) &&
           (revcomp(a: version, b: "12.1X46") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X47-D30") < 0) &&
           (revcomp(a: version, b: "12.1X47") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3R10") < 0) &&
           (revcomp(a: version, b: "12.3") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3X48-D20") < 0) &&
           (revcomp(a: version, b: "12.3X48") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

if (version =~ "^13") {
  if ((revcomp(a: version, b: "13.2X51-D20") < 0) &&
      (revcomp(a: version, b: "13.2X51") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "13.3R8") < 0) &&
           (revcomp(a: version, b: "13.3") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

if (version =~ "^14") {
  if (revcomp(a: version, b: "14.1R6") < 0) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.2R5") < 0) &&
           (revcomp(a: version, b: "14.2") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

exit(99);