Mitsubishi Electric MELSEC-Q Series PLCs Uncontrolled Resource Consumption (CVE-2019-6535)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(500066);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/04");

  script_cve_id("CVE-2019-6535");

  script_name(english:"Mitsubishi Electric MELSEC-Q Series PLCs Uncontrolled Resource Consumption (CVE-2019-6535)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Mitsubishi Electric Q03/04/06/13/26UDVCPU: serial number 20081 and prior, Q04/06/13/26UDPVCPU: serial number 20081 and
prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 20101 and prior. A remote attacker can send
specific bytes over Port 5007 that will result in an Ethernet stack crash.

  - Mitsubishi Electric Q03/04/06/13/26UDVCPU: serial number 20081 and prior, Q04/06/13/26UDPVCPU: serial
    number 20081 and prior, and Q03UDECPU, Q04/06/10/13/20/26/50/100UDEHCPU: serial number 20101 and prior. A
    remote attacker can send specific bytes over Port 5007 that will result in an Ethernet stack crash.
    (CVE-2019-6535)

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://ics-cert.us-cert.gov/advisories/ICSA-19-029-02");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/106771");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Mitsubishi Electric has produced a new version of the firmware. Additional information about this vulnerability or
Mitsubishi electric’s compensating control is available by contacting a local Mitsubishi Electric representative, which
can be found at the following location:

https://us.mitsubishielectric.com/fa/en/about-us/distributors

Mitsubishi Electric strongly recommends that users should operate the affected device behind a firewall.");
  script_set_cvss_base_vector("CVSS2#AV:N/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: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-2019-6535");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/07");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q03udecpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q03udvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q04udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q04udpvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q04udvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q06udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q06udpvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q06udvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q100udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q10udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q13udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q13udpvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q13udvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q20udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q26udehcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q26udpvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q26udvcpu_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:q50udehcpu_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Mitsubishi');

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

var vuln_cpes = {
    "cpe:/o:mitsubishielectric:q03udvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q04udvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q06udvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q13udvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q26udvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q04udpvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q06udpvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q13udpvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q26udpvcpu_firmware" :
        {"versionEndIncluding" : "20081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q03udecpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q04udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q06udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q10udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q13udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q20udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q26udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q50udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:q100udehcpu_firmware" :
        {"versionEndIncluding" : "20101", "family" : "MELSECQ"}
};

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