Cisco UCS Manager Software Local Management CLI Denial of Service (CVE-2020-3504)

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

include('compat.inc');

if (description)
{
  script_id(501378);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/26");

  script_cve_id("CVE-2020-3504");

  script_name(english:"Cisco UCS Manager Software Local Management CLI Denial of Service (CVE-2020-3504)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A vulnerability in the local management (local-mgmt) CLI of Cisco UCS
Manager Software could allow an authenticated, local attacker to cause
a denial of service (DoS) condition on an affected device. The
vulnerability is due to improper handling of CLI command parameters.
An attacker could exploit this vulnerability by executing specific
commands on the local-mgmt CLI on an affected device. A successful
exploit could allow the attacker to cause internal system processes to
fail to terminate properly, which could result in a buildup of stuck
processes and lead to slowness in accessing the UCS Manager CLI and
web UI. A sustained attack may result in a restart of internal UCS
Manager processes and a temporary loss of access to the UCS Manager
CLI and web UI.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucs-cli-dos-GQUxCnTe
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9fa2bae3");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-3504");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(400);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/08/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/25");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Cisco");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Cisco');

var asset = tenable_ot::assets::get(vendor:'Cisco');

var vuln_cpes = {
    "cpe:/o:cisco:nx-os" :
        {"versionEndExcluding" : "4.0%284i%29", "versionStartIncluding" : "4.0", "family" : "NXOS"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_NOTE);