Cisco Identity Services Engine (cisco-sa-ise-radsupress-dos-8YF3JThh)

#TRUSTED 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
#TRUST-RSA-SHA256 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
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(274062);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2025-20343");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwq27605");
  script_xref(name:"CISCO-SA", value:"cisco-sa-ise-radsupress-dos-8YF3JThh");
  script_xref(name:"IAVA", value:"2025-A-0819-S");

  script_name(english:"Cisco Identity Services Engine (cisco-sa-ise-radsupress-dos-8YF3JThh)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco ISE is affected by a vulnerability.

  - A vulnerability in the RADIUS setting Reject RADIUS requests from clients with repeated failures on Cisco
    Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause Cisco ISE to
    restart unexpectedly. This vulnerability is due to a logic error when processing a RADIUS access request
    for a MAC address that is already a rejected endpoint. An attacker could exploit this vulnerability by
    sending a specific sequence of multiple crafted RADIUS access request messages to Cisco ISE. A successful
    exploit could allow the attacker to cause a denial of service (DoS) condition when Cisco ISE restarts.
    (CVE-2025-20343)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.");
  # https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-radsupress-dos-8YF3JThh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8c72440d");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwq27605");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwq27605");
  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:C/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-2025-20343");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(697);

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

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:identity_services_engine");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:identity_services_engine");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:identity_services_engine_software");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_ise_detect.nbin");
  script_require_keys("Host/Cisco/ISE/version");

  exit(0);
}

include('ccf.inc');
include('cisco_ise_func.inc');

var product_info = cisco::get_product_info(name:'Cisco Identity Services Engine Software');

product_info = strip_fourth_segment(product_info:product_info);

var vuln_ranges = [
 {'min_ver': '3.4', 'fix_ver': '3.4', 'required_patch': '4'}
];

var required_patch = get_required_patch(vuln_ranges:vuln_ranges, version:product_info['version']);

var reporting = make_array(
  'port'          , 0,
  'severity'      , SECURITY_HOLE,
  'version'       , product_info['version'],
  'bug_id'        , 'CSCwq27605',
  'disable_caveat', TRUE,
  'fix'           , 'See vendor advisory'
);

cisco::check_and_report(
  product_info:product_info,
  reporting:reporting,
  vuln_ranges:vuln_ranges,
  required_patch:required_patch
);