SonicWall SonicOS SSLVPN Stack-Based Buffer Overflow DoS (SNWLID-2025-0016)

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

include('compat.inc');

if (description)
{
  script_id(277588);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/03");

  script_cve_id("CVE-2025-40601");
  script_xref(name:"IAVA", value:"2025-A-0875-S");

  script_name(english:"SonicWall SonicOS SSLVPN Stack-Based Buffer Overflow DoS (SNWLID-2025-0016)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by a stack-based buffer overflow vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected
by a stack-based buffer overflow vulnerability in the SSLVPN service that could allow a remote, unauthenticated 
attacker to crash the firewall and initiate a Denial of Service attack.

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://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0016");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in the vendor security advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/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-2025-40601");

  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:"2025/11/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/05");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:sonicwall:sonicos");
  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) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("sonicwall_sonicos_installed.nbin");
  script_require_keys("installed_sw/SonicWall SonicOS");

  exit(0);
}

include('vcf_extras.inc');

var app_info = vcf::get_app_info(app:'SonicWall SonicOS');

var gen7_vuln_models = [
  'NSv 270',
  'NSv 470',
  'NSv 870',
  'TZ 270',
  'TZ 270W',
  'TZ 370',
  'TZ 370W',
  'TZ 470',
  'TZ 470W',
  'TZ 570',
  'TZ 570W',
  'TZ 570P',
  'TZ 670',
  'NSa 2700',
  'NSa 3700',
  'NSa 4700',
  'NSa 5700',
  'NSa 6700',
  'NSsp 10700',
  'NSsp 11700',
  'NSsp 13700',
  'NSsp 15700'
];

var gen8_vuln_models = [
  'TZ 80',
  'TZ 280',
  'TZ 380',
  'TZ 480',
  'TZ 580',
  'TZ 680',
  'NSa 2800',
  'NSa 3800',
  'NSa 4800',
  'NSa 5800'
];

var constraints = [
  { 'min_version':'7.1.0',  'fixed_version':'7.3.0', 'fixed_display':'7.3.1-7013', 'models':gen7_vuln_models},
  { 'equal':'7.3.0', 'ext':'7013', 'fixed_display':'7.3.1-7013', 'models':gen7_vuln_models},
  { 'min_version':'8.0.0', 'fixed_version':'8.0.2', 'fixed_display':'8.0.3-8011', 'models':gen8_vuln_models},
  { 'equal':'8.0.2', 'ext':'8012', 'fixed_display':'8.0.3-8011', 'models':gen8_vuln_models}
];

vcf::sonicwall_sonicos::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);