Elastic Kibana 'CVE-2018-3818' Cross-Site Scripting (XSS) Vulnerability - Linux

# SPDX-FileCopyrightText: 2018 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:elastic:kibana";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.107282");
  script_version("2025-09-03T14:11:39+0000");
  script_cve_id("CVE-2018-3818");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_tag(name:"last_modification", value:"2025-09-03 14:11:39 +0000 (Wed, 03 Sep 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-14 17:30:00 +0000 (Fri, 14 Aug 2020)");
  script_tag(name:"creation_date", value:"2018-02-02 11:08:33 +0100 (Fri, 02 Feb 2018)");
  script_name("Elastic Kibana 'CVE-2018-3818' Cross-Site Scripting (XSS) Vulnerability - Linux");
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_category(ACT_GATHER_INFO);
  script_family("Web application abuses");
  script_dependencies("gb_elastic_kibana_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("elastic/kibana/detected", "Host/runs_unixoide");

  script_xref(name:"URL", value:"https://www.elastic.co/community/security");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/102734");

  script_tag(name:"summary", value:"Elastic Kibana is prone to a cross-site scripting (XSS) vulnerability.");

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

  script_tag(name:"insight", value:"Kibana is prone to a cross-site scripting
  vulnerability because it fails to sanitize user-supplied input.");

  script_tag(name:"impact", value:"An attacker may leverage this issue to execute
  arbitrary script code in the browser of an unsuspecting user in the context of
  the affected site. This may allow the attacker to steal cookie-based authentication
  credentials and launch other attacks.");

  script_tag(name:"affected", value:"Elastic Kibana Versions between 5.1.1 and 5.6.5 and
  6.x prior to 6.1.2.");

  script_tag(name:"solution", value:"Update to Elastic Kibana version 5.6.6 / 6.1.2,
  or later.");

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

  exit(0);
}

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

if( ! port = get_app_port( cpe:CPE ) ) exit( 0 );
if( ! vers = get_app_version( cpe:CPE, port:port ) ) exit( 0 );

if( version_in_range( version:vers, test_version:"5.1.1", test_version2:"5.6.5" ) ) {
  fix  = "5.6.6";
  VULN = TRUE;
} else if( vers =~ "^6\." && version_is_less( version:vers, test_version:"6.1.2" ) ) {
  fix  = "6.1.2";
  VULN = TRUE;
}

if( VULN ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:fix );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );