Elastic Kibana 4.0 <= 4.6 / 5.0 <= 5.6.12 / 6.0 <= 6.4.2 Credential Exposure Vulnerability - Windows

# SPDX-FileCopyrightText: 2019 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

if( description )
{
  script_oid("1.3.6.1.4.1.25623.1.0.112545");
  script_version("2025-09-03T14:11:39+0000");
  script_tag(name:"last_modification", value:"2025-09-03 14:11:39 +0000 (Wed, 03 Sep 2025)");
  script_tag(name:"creation_date", value:"2019-03-27 12:13:11 +0100 (Wed, 27 Mar 2019)");
  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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-14 17:31:00 +0000 (Fri, 14 Aug 2020)");

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

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

  script_cve_id("CVE-2018-17245");

  script_name("Elastic Kibana 4.0 <= 4.6 / 5.0 <= 5.6.12 / 6.0 <= 6.4.2 Credential Exposure Vulnerability - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_elastic_kibana_http_detect.nasl", "os_detection.nasl");
  script_mandatory_keys("elastic/kibana/detected", "Host/runs_windows");

  script_tag(name:"summary", value:"Kibana is prone to an information disclosure vulnerability.");

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

  script_tag(name:"insight", value:"Affected versions of Kibana contain an error in the way authorization credentials
  are used when generating PDF reports. If a report requests external resources plaintext credentials are included in
  the HTTP request that could be recovered by an external resource provider.");

  script_tag(name:"impact", value:"Successful exploitation would allow an attacker to obtain user authentication credentials
  (i.e., Kibana username and password in reversible hashed format).");

  script_tag(name:"affected", value:"Kibana versions 4.0 to 4.6, 5.0 to 5.6.12, and 6.0 to 6.4.2.");

  script_tag(name:"solution", value:"Update to version 5.6.13 or 6.4.3 respectively.");

  script_xref(name:"URL", value:"https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594");
  script_xref(name:"URL", value:"https://www.elastic.co/blog/elastic-support-alert-kibana-reporting-vulnerability");

  exit(0);
}

CPE = "cpe:/a:elastic:kibana";

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

if( ! port = get_app_port( cpe: CPE ) ) exit( 0 );
if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE ) ) exit( 0 );

version = infos["version"];
path = infos["location"];

if( version_in_range( version: version, test_version: "4.0.0", test_version2: "4.6.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "5.6.13", install_path: path );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "5.0.0", test_version2: "5.6.12" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "5.6.13", install_path: path );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "6.0.0", test_version2: "6.4.2" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "6.4.3", install_path: path );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );