Cisco Identity Services Engine Multiple Vulnerabilities (cisco-sa-ise-mult-vul-ymSsTLCc)

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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(348172);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/21");

  script_cve_id("CVE-2026-20282", "CVE-2026-20283", "CVE-2026-20284");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwu31070");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwu40000");
  script_xref(name:"CISCO-BUG-ID", value:"CSCwu66592");
  script_xref(name:"CISCO-SA", value:"cisco-sa-ise-mult-vul-ymSsTLCc");
  script_xref(name:"IAVA", value:"2026-A-1031");

  script_name(english:"Cisco Identity Services Engine Multiple Vulnerabilities (cisco-sa-ise-mult-vul-ymSsTLCc)");

  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 multiple vulnerabilities.

  - A vulnerability in the SXP REST API of Cisco ISE could allow an authenticated, remote attacker to conduct
    SQL injection attacks. (CVE-2026-20284)

  - A vulnerability in the SXP REST API of Cisco ISE could allow an authenticated, remote attacker to conduct
    SQL injection attacks. This vulnerability is due to insufficient validation of user-supplied input in REST
    API calls. An attacker could exploit this vulnerability by sending crafted input to an affected device. A
    successful exploit could allow the attacker to view or modify data on the underlying database for the
    affected device. In single-node deployments, successful exploitation of this vulnerability could cause the
    affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that
    have not already authenticated would be unable to access the network until the node is restored. To
    exploit this vulnerability, the attacker must have valid administrative credentials, have the SXP service
    enabled, and have at least one SXP connection configured. (CVE-2026-20284)

  - A vulnerability in Cisco ISE could allow an authenticated, remote attacker to obtain write access on the
    underlying operating system of an affected device. (CVE-2026-20282)

  - A vulnerability in Cisco ISE could allow an authenticated, remote attacker to obtain write access on the
    underlying operating system of an affected device. This vulnerability is due to insufficient validation of
    user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an
    affected device. A successful exploit could allow the attacker to obtain write access to the underlying
    operating system. To exploit this vulnerability, the attacker must have valid administrative credentials.
    Note: For CVE-2026-20282, Cisco has assigned a Security Impact Rating (SIR) of High rather than Medium as
    the score indicates. The reason is that it is easy to get to root from the achieved privilege level.
    (CVE-2026-20282)

  - A vulnerability in the IPsec Open API endpoint of Cisco ISE could allow an authenticated, remote attacker
    to inject arbitrary commands on the underlying operating system. This vulnerability is due to
    insufficient validation of user-supplied input in IPsec Open API calls. An attacker could exploit this
    vulnerability by sending crafted input to the IPsec Open API endpoint on an affected device. A successful
    exploit could allow the attacker to execute arbitrary commands on the underlying operating system.
    To exploit this vulnerability, the attacker must have valid administrative credentials and the node must
    have more than one network interface, one of which must be configured as an active IPsec tunnel. Note: For
    CVE-2026-20283, Cisco has assigned a Security Impact Rating (SIR) of High rather than Medium as the score
    indicates. The reason is that it is easy to get to root from the achieved privilege level.
    (CVE-2026-20283)

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-mult-vul-ymSsTLCc
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4a04aedf");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu31070");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu40000");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu66592");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCwu31070, CSCwu40000, CSCwu66592");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:M/C:N/I:C/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:L/PR:H/UI:N/S:C/C:H/I:H/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-2026-20282");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-20284");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(641, 78, 943);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/18");

  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:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 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': '1.0', 'fix_ver': '3.1', 'required_patch': '12'},
 {'min_ver': '3.2', 'fix_ver': '3.2', 'required_patch': '11'},
 {'min_ver': '3.3', 'fix_ver': '3.3', 'required_patch': '12'},
 {'min_ver': '3.4', 'fix_ver': '3.4', 'required_patch': '7'},
 {'min_ver': '3.5', 'fix_ver': '3.5', '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_WARNING,
  'version'       , product_info['version'],
  'bug_id'        , 'CSCwu31070, CSCwu40000, CSCwu66592',
  '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
);