Fortinet Fortigate - Null pointer dereference in sslvpnd proxy endpoint (FG-IR-23-125)

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

include('compat.inc');

if (description)
{
  script_id(177120);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/22");

  script_cve_id("CVE-2023-29179");
  script_xref(name:"IAVA", value:"2023-A-0281-S");

  script_name(english:"Fortinet Fortigate - Null pointer dereference in sslvpnd proxy endpoint (FG-IR-23-125)");

  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 Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a
vulnerability as referenced in the FG-IR-23-125 advisory.

  - A null pointer dereference in Fortinet FortiOS version 7.2.0 through 7.2.4, 7.0.0 through 7.0.11, 6.4.0
    through 6.4.12, Fortiproxy version 7.2.0 through 7.2.4, 7.0.0 through 7.0.10 allows attacker to denial of
    service via specially crafted HTTP requests. (CVE-2023-29179)

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-23-125");
  script_set_attribute(attribute:"solution", value:
"Please upgrade to FortiOS version 7.4.0 or above

Please upgrade to FortiOS version 7.2.5 or above

Please upgrade to FortiOS version 7.0.12 or above

Please upgrade to FortiOS version 6.4.13 or above");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-29179");

  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:"2023/06/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/06/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fortinet:fortios");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 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 = 'Fortigate';
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' : '6.4.0', 'max_version' : '6.4.12', 'fixed_version' : '6.4.13' },
  { 'min_version' : '7.0.0', 'max_version' : '7.0.11', 'fixed_version' : '7.0.12' },
  { 'min_version' : '7.2.0', 'max_version' : '7.2.4', 'fixed_version' : '7.2.5' }
];

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