Cisco NX-OS Allocation of Resources Without Limits or Throttling (CVE-2024-20321)

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

include('compat.inc');

if (description)
{
  script_id(502083);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");

  script_cve_id("CVE-2024-20321");

  script_name(english:"Cisco NX-OS Allocation of Resources Without Limits or Throttling (CVE-2024-20321)");

  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 External Border Gateway Protocol (eBGP)
implementation of Cisco NX-OS Software could allow an unauthenticated,
remote attacker to cause a denial of service (DoS) condition on an
affected device. This vulnerability exists because eBGP traffic is
mapped to a shared hardware rate-limiter queue. An attacker could
exploit this vulnerability by sending large amounts of network traffic
with certain characteristics through an affected device. A successful
exploit could allow the attacker to cause eBGP neighbor sessions to be
dropped, leading to a DoS condition in the network.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-ebgp-dos-L3QCwVJ
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1e3d5bb2");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor 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: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-2024-20321");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(400, 770);

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/02/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/02/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/08");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.1%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.1%282%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.1%282t%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%281q%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%282%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%283%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%283t%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%283v%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%284%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%285%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.2%286%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%282%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%283%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%284a%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%2899w%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.3%2899x%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:10.4%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f1%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f2%281%29");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f3%283a%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f3%283c%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f3%284%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:7.0%283%29f3%285%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.2%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.2%282%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.2%282t%29");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.2%283%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.2%284%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.3%281%29");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.3%2810%29");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os:9.3%288%29");
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  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

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}


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:7.0%283%29f1%281%29" :
        {"versionEndIncluding" : "7.0%283%29f1%281%29", "versionStartIncluding" : "7.0%283%29f1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f2%281%29" :
        {"versionEndIncluding" : "7.0%283%29f2%281%29", "versionStartIncluding" : "7.0%283%29f2%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f2%282%29" :
        {"versionEndIncluding" : "7.0%283%29f2%282%29", "versionStartIncluding" : "7.0%283%29f2%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%281%29" :
        {"versionEndIncluding" : "7.0%283%29f3%281%29", "versionStartIncluding" : "7.0%283%29f3%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%282%29" :
        {"versionEndIncluding" : "7.0%283%29f3%282%29", "versionStartIncluding" : "7.0%283%29f3%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%283%29" :
        {"versionEndIncluding" : "7.0%283%29f3%283%29", "versionStartIncluding" : "7.0%283%29f3%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%283a%29" :
        {"versionEndIncluding" : "7.0%283%29f3%283a%29", "versionStartIncluding" : "7.0%283%29f3%283a%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%283c%29" :
        {"versionEndIncluding" : "7.0%283%29f3%283c%29", "versionStartIncluding" : "7.0%283%29f3%283c%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%284%29" :
        {"versionEndIncluding" : "7.0%283%29f3%284%29", "versionStartIncluding" : "7.0%283%29f3%284%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:7.0%283%29f3%285%29" :
        {"versionEndIncluding" : "7.0%283%29f3%285%29", "versionStartIncluding" : "7.0%283%29f3%285%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%281%29" :
        {"versionEndIncluding" : "9.2%281%29", "versionStartIncluding" : "9.2%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%282%29" :
        {"versionEndIncluding" : "9.2%282%29", "versionStartIncluding" : "9.2%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%282t%29" :
        {"versionEndIncluding" : "9.2%282t%29", "versionStartIncluding" : "9.2%282t%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%282v%29" :
        {"versionEndIncluding" : "9.2%282v%29", "versionStartIncluding" : "9.2%282v%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%283%29" :
        {"versionEndIncluding" : "9.2%283%29", "versionStartIncluding" : "9.2%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.2%284%29" :
        {"versionEndIncluding" : "9.2%284%29", "versionStartIncluding" : "9.2%284%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%281%29" :
        {"versionEndIncluding" : "9.3%281%29", "versionStartIncluding" : "9.3%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%282%29" :
        {"versionEndIncluding" : "9.3%282%29", "versionStartIncluding" : "9.3%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%283%29" :
        {"versionEndIncluding" : "9.3%283%29", "versionStartIncluding" : "9.3%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%284%29" :
        {"versionEndIncluding" : "9.3%284%29", "versionStartIncluding" : "9.3%284%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%285%29" :
        {"versionEndIncluding" : "9.3%285%29", "versionStartIncluding" : "9.3%285%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%286%29" :
        {"versionEndIncluding" : "9.3%286%29", "versionStartIncluding" : "9.3%286%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%287%29" :
        {"versionEndIncluding" : "9.3%287%29", "versionStartIncluding" : "9.3%287%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%287a%29" :
        {"versionEndIncluding" : "9.3%287a%29", "versionStartIncluding" : "9.3%287a%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%288%29" :
        {"versionEndIncluding" : "9.3%288%29", "versionStartIncluding" : "9.3%288%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%289%29" :
        {"versionEndIncluding" : "9.3%289%29", "versionStartIncluding" : "9.3%289%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%2810%29" :
        {"versionEndIncluding" : "9.3%2810%29", "versionStartIncluding" : "9.3%2810%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%2811%29" :
        {"versionEndIncluding" : "9.3%2811%29", "versionStartIncluding" : "9.3%2811%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:9.3%2812%29" :
        {"versionEndIncluding" : "9.3%2812%29", "versionStartIncluding" : "9.3%2812%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.1%281%29" :
        {"versionEndIncluding" : "10.1%281%29", "versionStartIncluding" : "10.1%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.1%282%29" :
        {"versionEndIncluding" : "10.1%282%29", "versionStartIncluding" : "10.1%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.1%282t%29" :
        {"versionEndIncluding" : "10.1%282t%29", "versionStartIncluding" : "10.1%282t%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%281%29" :
        {"versionEndIncluding" : "10.2%281%29", "versionStartIncluding" : "10.2%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%281q%29" :
        {"versionEndIncluding" : "10.2%281q%29", "versionStartIncluding" : "10.2%281q%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%282%29" :
        {"versionEndIncluding" : "10.2%282%29", "versionStartIncluding" : "10.2%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%283%29" :
        {"versionEndIncluding" : "10.2%283%29", "versionStartIncluding" : "10.2%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%283t%29" :
        {"versionEndIncluding" : "10.2%283t%29", "versionStartIncluding" : "10.2%283t%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%283v%29" :
        {"versionEndIncluding" : "10.2%283v%29", "versionStartIncluding" : "10.2%283v%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%284%29" :
        {"versionEndIncluding" : "10.2%284%29", "versionStartIncluding" : "10.2%284%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%285%29" :
        {"versionEndIncluding" : "10.2%285%29", "versionStartIncluding" : "10.2%285%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.2%286%29" :
        {"versionEndIncluding" : "10.2%286%29", "versionStartIncluding" : "10.2%286%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%281%29" :
        {"versionEndIncluding" : "10.3%281%29", "versionStartIncluding" : "10.3%281%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%282%29" :
        {"versionEndIncluding" : "10.3%282%29", "versionStartIncluding" : "10.3%282%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%283%29" :
        {"versionEndIncluding" : "10.3%283%29", "versionStartIncluding" : "10.3%283%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%284a%29" :
        {"versionEndIncluding" : "10.3%284a%29", "versionStartIncluding" : "10.3%284a%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%2899w%29" :
        {"versionEndIncluding" : "10.3%2899w%29", "versionStartIncluding" : "10.3%2899w%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.3%2899x%29" :
        {"versionEndIncluding" : "10.3%2899x%29", "versionStartIncluding" : "10.3%2899x%29", "family" : "NXOS"},
    "cpe:/o:cisco:nx-os:10.4%281%29" :
        {"versionEndIncluding" : "10.4%281%29", "versionStartIncluding" : "10.4%281%29", "family" : "NXOS"}
};

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