Cisco IOS XR Software IKEv1 Information Disclosure Vulnerability (cisco-sa-20160916-ikev1)

# 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_xr";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106261");
  script_version("2023-07-25T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2016-09-19 09:23:33 +0700 (Mon, 19 Sep 2016)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-06-03 15:33:00 +0000 (Wed, 03 Jun 2020)");

  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");
  script_cve_id("CVE-2016-6415");

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

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

  script_name("Cisco IOS XR Software IKEv1 Information Disclosure Vulnerability (cisco-sa-20160916-ikev1)");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2016 Greenbone AG");
  script_family("CISCO");
  script_dependencies("gb_cisco_ios_xr_consolidation.nasl");
  script_mandatory_keys("cisco/ios_xr/detected");

  script_tag(name:"summary", value:"A vulnerability in Internet Key Exchange version 1 (IKEv1)
  packet processing code in Cisco IOS XR Software could allow an unauthenticated, remote attacker
  to retrieve memory contents, which could lead to the disclosure of confidential information.");

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

  script_tag(name:"insight", value:"The vulnerability is due to insufficient condition checks in
  the part of the code that handles IKEv1 security negotiation requests. An attacker could exploit
  this vulnerability by sending a crafted IKEv1 packet to an affected device configured to accept
  IKEv1 security negotiation requests.");

  script_tag(name:"impact", value:"A successful exploit could allow the attacker to retrieve memory
  contents, which could lead to the disclosure of confidential information.");

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

  script_xref(name:"URL", value:"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1");

  exit(0);
}

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

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

affected = make_list(
  '4.3.4',
  '5.2.1',
  '5.2.2',
  '5.2.3',
  '5.2.4',
  '5.2.5',
  '5.2.6' );

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);