Cisco IP Phones TCP Packet Flood Denial of Service (CVE-2020-3574)

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

include('compat.inc');

if (description)
{
  script_id(502152);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/18");

  script_cve_id("CVE-2020-3574");

  script_name(english:"Cisco IP Phones TCP Packet Flood Denial of Service (CVE-2020-3574)");

  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 TCP packet processing functionality of Cisco IP
Phones could allow an unauthenticated, remote attacker to cause the
phone to stop responding to incoming calls, drop connected calls, or
unexpectedly reload. The vulnerability is due to insufficient TCP
ingress packet rate limiting. An attacker could exploit this
vulnerability by sending a high and sustained rate of crafted TCP
traffic to the targeted device. A successful exploit could allow the
attacker to impact operations of the phone or cause the phone to
reload, leading to a denial of service (DoS) condition.

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-voip-phone-flood-dos-YnU9EXOv
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dc117618");
  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:U/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-2020-3574");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/11/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ip_phone_8811_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ip_phone_8841_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ip_phone_8851_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ip_phone_8861_firmware");
  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) 2024 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:ip_phone_8811_firmware" :
        {"versionEndExcluding" : "11.3(2)mpp", "family" : "CiscoIPPhones"},
    "cpe:/o:cisco:ip_phone_8841_firmware" :
        {"versionEndExcluding" : "11.3(2)mpp", "family" : "CiscoIPPhones"},
    "cpe:/o:cisco:ip_phone_8851_firmware" :
        {"versionEndExcluding" : "11.3(2)mpp", "family" : "CiscoIPPhones"},
    "cpe:/o:cisco:ip_phone_8861_firmware" :
        {"versionEndExcluding" : "11.3(2)mpp", "family" : "CiscoIPPhones"}
};

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