Fortinet FortiAnalyzer Authentication Lockout Bypass via Race Condition (FG-IR-26-079)

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

include('compat.inc');

if (description)
{
  script_id(301724);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/10");

  script_cve_id("CVE-2026-22629");

  script_name(english:"Fortinet FortiAnalyzer Authentication Lockout Bypass via Race Condition (FG-IR-26-079)");

  script_set_attribute(attribute:"synopsis", value:
"Fortinet Firewall is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The version of FortiAnalyzer installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the FG-IR-26-079 advisory.

  - An improper restriction of excessive authentication attempts vulnerability in Fortinet FortiAnalyzer 7.6.0
    through 7.6.4, FortiAnalyzer 7.4 all versions, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all
    versions, FortiAnalyzer 6.4 all versions, FortiAnalyzer Cloud 7.6.2, FortiAnalyzer Cloud 7.4.1 through
    7.4.7, FortiAnalyzer Cloud 7.2.1 through 7.2.10, FortiAnalyzer Cloud 7.0.1 through 7.0.14, FortiAnalyzer
    Cloud 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4 all versions, FortiManager 7.2
    all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions, FortiManager Cloud 7.6.2
    through 7.6.3, FortiManager Cloud 7.4.1 through 7.4.7, FortiManager Cloud 7.2.1 through 7.2.10,
    FortiManager Cloud 7.0.1 through 7.0.14, FortiManager Cloud 6.4 all versions may allow an attacker to
    bypass bruteforce protections via exploitation of race conditions. The latter raises the complexity of
    practical exploitation. (CVE-2026-22629)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.fortiguard.com/psirt/FG-IR-26-079");
  script_set_attribute(attribute:"solution", value:
"For 6.4.x / 7.0.x / 7.2.x / 7.4.x, see vendor advisory. For 7.6.x, upgrade to FortiAnalyzer version 7.6.5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/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:H/PR:N/UI:N/S:U/C:L/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-2026-22629");

  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:"2026/03/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:fortinet:fortianalyzer");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Firewalls");

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

  script_dependencies("fortinet_version.nbin");
  script_require_keys("Host/Fortigate/model", "Host/Fortigate/version");

  exit(0);
}

include('vcf_extras_fortios.inc');

var app_name = 'FortiAnalyzer';
var app_info = vcf::get_app_info(app:app_name, kb_ver:'Host/Fortigate/version');
vcf::fortios::verify_product_and_model(product_name:app_name);

var constraints = [
  { 'min_version' : '6.4', 'fixed_version' : '6.4.999999', 'fixed_display' : 'See vendor advisory' },
  { 'min_version' : '7.0', 'fixed_version' : '7.0.999999', 'fixed_display' : 'See vendor advisory' },
  { 'min_version' : '7.2', 'fixed_version' : '7.2.999999', 'fixed_display' : 'See vendor advisory' },
  { 'min_version' : '7.4', 'fixed_version' : '7.4.999999', 'fixed_display' : 'See vendor advisory' },
  { 'min_version' : '7.6.0', 'max_version' : '7.6.4', 'fixed_version' : '7.6.5' }
];

vcf::fortios::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_NOTE
);