Cisco Identity Services Engine GUI Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2017 Greenbone AG
# 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-only

CPE = "cpe:/a:cisco:identity_services_engine";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106811");
  script_cve_id("CVE-2017-6653");
  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_version("2023-07-14T16:09:27+0000");

  script_name("Cisco Identity Services Engine GUI Denial of Service Vulnerability");

  script_xref(name:"URL", value:"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-ise");

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

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

  script_tag(name:"summary", value:"A vulnerability in the TCP throttling process for the GUI of the Cisco
Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS)
condition on an affected device where the ISE GUI may fail to respond to new or established connection
requests.");

  script_tag(name:"insight", value:"The vulnerability is due to insufficient TCP rate limiting protection on the
GUI. An attacker could exploit this vulnerability by sending the affected device a high rate of TCP connections
to the GUI.");

  script_tag(name:"impact", value:"An exploit could allow the attacker to cause the GUI to stop responding while
the high rate of connections is in progress.");

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

  script_tag(name:"last_modification", value:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");
  script_tag(name:"creation_date", value:"2017-05-18 09:31:21 +0700 (Thu, 18 May 2017)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_dependencies("gb_cisco_ise_version.nasl");
  script_mandatory_keys("cisco_ise/version");

  exit(0);
}

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

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

if (version == '2.1.0.474') {
  report = report_fixed_ver(installed_version: version, fixed_version: "See advisory");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);