Extreme Network Fabric Engine < 9.3 Authentication Bypass (SA-2025-115)

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

include('compat.inc');

if (description)
{
  script_id(350292);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/25");

  script_cve_id("CVE-2025-11192");

  script_name(english:"Extreme Network Fabric Engine < 9.3 Authentication Bypass (SA-2025-115)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has a program that is affected by an authentication bypass vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Extreme Networks Fabric Engine installed on the remote host is missing a security update. It is, 
therefore, affected by an authentication bypass vulnerability.

  - A vulnerability in Extreme Networks Fabric Engine (VOSS) before 9.3 was discovered. When SD-WAN AutoSense 
    is enabled on a port, it may automatically configure fabric connectivity without validating ISIS 
    authentication settings. The SD-WAN AutoSense implementation may be exploited by malicious actors by 
    allowing unauthorized access to network fabric and configuration data.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version 
number.");
  #https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2025-115-fabric-engine-voss-autosense-authentication-bypass/ba-p/120395
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0532e3e6");
  script_set_attribute(attribute:"see_also", value:"https://extreme-networks.my.site.com/ExtrArticleDetail?an=000130291");
  script_set_attribute(attribute:"solution", value:
"Upgrade Fabric Engine to 9.3 or later");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-11192");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/09/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:extremenetworks:fabric_engine");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("extreme_networks_fabric_engine_web_detect.nbin", "extreme_networks_fabric_engine.nbin");
  script_require_keys("installed_sw/Extreme Networks Fabric Engine");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Extreme Networks Fabric Engine', 'type': 'os'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '9.3.0'}
      ]
    }
  ]
};

var res = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:res);