Elastic Elasticsearch 'CVE-2018-3831' Information Disclosure Vulnerability - Windows

# 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

if( description )
{
  script_oid("1.3.6.1.4.1.25623.1.0.113276");
  script_version("2025-09-03T08:26:15+0000");
  script_tag(name:"last_modification", value:"2025-09-03 08:26:15 +0000 (Wed, 03 Sep 2025)");
  script_tag(name:"creation_date", value:"2018-09-21 13:35:23 +0200 (Fri, 21 Sep 2018)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-04-07 15:29:00 +0000 (Tue, 07 Apr 2020)");

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

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

  script_cve_id("CVE-2018-3831");

  script_name("Elastic Elasticsearch 'CVE-2018-3831' Information Disclosure Vulnerability - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("General");
  script_dependencies("gb_elastic_elasticsearch_consolidation.nasl", "os_detection.nasl");
  script_mandatory_keys("elastic/elasticsearch/detected", "Host/runs_windows");

  script_tag(name:"summary", value:"Elasticsearch 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:"The _cluster/settings API, when queried, could leak sensitive configuration information
  such as passwords, tokens or usernames.");

  script_tag(name:"impact", value:"Successful exploitation would allow an authenticated attacker to acquire valid login credentials.");

  script_tag(name:"affected", value:"Elasticsearch versions through 5.6.11 and 6.0.0 through 6.4.0.");

  script_tag(name:"solution", value:"Update to version 5.6.12 or 6.4.1 respectively.");

  script_xref(name:"URL", value:"https://discuss.elastic.co/t/elastic-stack-6-4-1-and-5-6-12-security-update/149035");
  script_xref(name:"URL", value:"https://www.elastic.co/community/security");

  exit(0);
}

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

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

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

if( version_is_less( version: version, test_version: "5.6.12" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "5.6.12" );
  security_message( data: report, port: port );
  exit( 0 );
}

if( version_in_range( version: version, test_version: "6.0.0", test_version2: "6.4.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "6.4.1" );
  security_message( data: report, port: port );
  exit( 0 );
}

exit( 99 );