Cisco IOS Software RADIUS Client Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2016 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:/o:cisco:ios";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.105635");
  script_cve_id("CVE-2015-6263");
  script_tag(name:"cvss_base", value:"6.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:N/I:N/A:C");
  script_version("2023-07-21T05:05:22+0000");

  script_name("Cisco IOS Software RADIUS Client Denial of Service Vulnerability");

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151005-ios-radius");

  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 RADIUS client feature of Cisco IOS Software could allow an authenticated,
  remote attacker to cause a reload of the affected device.

  The vulnerability is due to improper parsing of malformed RADIUS packets returned by a RADIUS server.
  An attacker could exploit this vulnerability by configuring a RADIUS server with a shared RADIUS secret and returning malformed
  answers back to a RADIUS client on an affected Cisco device. An exploit could allow the attacker to cause a reload of the affected device.

  Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.
  This advisory is available at the references.");

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

  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2016-05-03 18:59:17 +0200 (Tue, 03 May 2016)");
  script_category(ACT_GATHER_INFO);
  script_family("CISCO");
  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_dependencies("gb_ssh_cisco_ios_get_version.nasl");
  script_mandatory_keys("cisco_ios/version");
  exit(0);
}

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

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

affected = make_list(
  '15.4(3)M2.2' );

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 );