Kibana 7.x / 8.x < 8.19.21 / 9.0.x < 9.4.6 / 9.5.x < 9.5.2 Missing Authorization (ESA-2026-144)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(344322);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/10");

  script_cve_id("CVE-2026-78608");
  script_xref(name:"IAVB", value:"2026-B-0244");

  script_name(english:"Kibana 7.x / 8.x < 8.19.21 / 9.0.x < 9.4.6 / 9.5.x < 9.5.2 Missing Authorization (ESA-2026-144)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a missing authorization vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Kibana installed on the remote host is 7.14.0 through 7.17.29, or 8.x prior to 8.19.21, or 9.0.x prior to
9.4.6, or 9.5.x prior to 9.5.2. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-144
advisory.

  - Missing Authorization (CWE-862) in Kibana can lead to information disclosure via Privilege Abuse
    (CAPEC-122). An authorization control was not applied to an internal Kibana APM integration function,
    allowing any authenticated Kibana user to read APM server credentials that should be restricted to users
    holding APM or Fleet administrative privileges. (CVE-2026-78608)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported
version number.");
  # https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-144/390064
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2c250073");
  script_set_attribute(attribute:"solution", value:
"Update to Kibana version 8.19.21, 9.4.6, 9.5.2 or later. Note that no fix is available for the 7.x release branch;
refer to the vendor advisory for details.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-78608");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/09");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:elasticsearch:kibana");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("kibana_web_detect.nbin");
  script_require_keys("installed_sw/Kibana");
  script_require_ports("Services/www", 5601);

  exit(0);
}

include('http.inc');
include('vcf.inc');

var app = 'Kibana';

get_install_count(app_name:app, exit_if_zero:TRUE);

var port = get_http_port(default:5601);

var app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE);

var constraints = [
  { 'min_version' : '7.14.0', 'max_version' : '7.17.29', 'fixed_display' : 'See vendor advisory' },
  { 'min_version' : '8.0.0', 'fixed_version' : '8.19.21' },
  { 'min_version' : '9.0.0', 'fixed_version' : '9.4.6' },
  { 'min_version' : '9.5.0', 'fixed_version' : '9.5.2' }
];

vcf::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_WARNING
);