Mitsubishi Electric MELSEC iQ-R, Q and L Series Uncontrolled Resource Consumption (CVE-2020-5652)

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

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

if (description)
{
  script_id(500395);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/04");

  script_cve_id("CVE-2020-5652");
  script_xref(name:"ICSA", value:"20-303-01");

  script_name(english:"Mitsubishi Electric MELSEC iQ-R, Q and L Series Uncontrolled Resource Consumption (CVE-2020-5652)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Uncontrolled resource consumption vulnerability in Ethernet Port on MELSEC iQ-R, Q and L series CPU modules (R 00/01/02
CPU firmware versions '20' and earlier, R 04/08/16/32/120 (EN) CPU firmware versions '52' and earlier, R 08/16/32/120
SFCPU firmware versions '22' and earlier, R 08/16/32/120 PCPU all versions, R 08/16/32/120 PSFCPU all versions, R
16/32/64 MTCPU all versions, Q03 UDECPU, Q 04/06/10/13/20/26/50/100 UDEHCPU serial number '22081' and earlier , Q
03/04/06/13/26 UDVCPU serial number '22031' and earlier, Q 04/06/13/26 UDPVCPU serial number '22031' and earlier, Q
172/173 DCPU all versions, Q 172/173 DSCPU all versions, Q 170 MCPU all versions, Q 170 MSCPU all versions, L 02/06/26
CPU (-P) and L 26 CPU - (P) BT all versions) allows a remote unauthenticated attacker to stop the Ethernet communication
functions of the products via a specially crafted packet, which may lead 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://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-013_en.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3f5c6d18");
  script_set_attribute(attribute:"see_also", value:"https://jvn.jp/vu/JVNVU96558207/index.html");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-20-303-01");
  # https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-013.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?066cb413");
  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 recommends users take the following mitigation measures to minimize the risk of exploiting this
vulnerability:

- Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when Internet access is required.
- Use within a LAN and block access from untrusted networks and hosts through firewalls.

Please refer to Mitsubishi Electric's website for details on available patches. Mitsubishi Electric recommends users
update their products by downloading and applying the latest versions. Please contact a Mitsubishi Electric
representative for additional details.

For specific additional details, see [Mitsubishi Electric advisory
2020-013].(https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-013_en.pdf).");
  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-2020-5652");

  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:"2020/11/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/02");
  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:melsec_q-q04udpvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q06udpvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q13udpvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q26udpvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q03udvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q04udvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q13udvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q26udvcpu_firmware:22031");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q03udecpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q04udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q06udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q10udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q13udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q20udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q26udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q50udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q100udehcpu_firmware:22081");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r08sfcpu_firmware:22");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r16sfcpu_firmware:22");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r32sfcpu_firmware:22");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r120sfcpu_firmware:22");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r04encpu_firmware:52");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r08encpu_firmware:52");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r16encpu_firmware:52");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r32encpu_firmware:52");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r120encpu_firmware:52");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r00cpu_firmware:20");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r01cpu_firmware:20");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r02cpu_firmware:20");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r08pcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r08psfcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r120pcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r120psfcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r16mtcpu_firmware:-");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-r64mtcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_l02cpu-p_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_l06cpu-p_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_l26cpu-p_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_l26cpu-pbt_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q170mcpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q170mscpu-s1_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q172dcpu-s1_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q172dscpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q173dcpu-s1_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-q173dscpu_firmware:-");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_q-qmr-mq100_firmware:-");
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  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:melsec_q-q04udpvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q06udpvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q13udpvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q26udpvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q03udvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q04udvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q13udvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q26udvcpu_firmware:22031" :
        {"versionEndIncluding" : "22031", "versionStartIncluding" : "22031", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q03udecpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q04udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q06udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q10udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q13udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q20udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q26udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q50udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q100udehcpu_firmware:22081" :
        {"versionEndIncluding" : "22081", "versionStartIncluding" : "22081", "family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_iq-r08sfcpu_firmware:22" :
        {"versionEndIncluding" : "22", "versionStartIncluding" : "22", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r16sfcpu_firmware:22" :
        {"versionEndIncluding" : "22", "versionStartIncluding" : "22", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r32sfcpu_firmware:22" :
        {"versionEndIncluding" : "22", "versionStartIncluding" : "22", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r120sfcpu_firmware:22" :
        {"versionEndIncluding" : "22", "versionStartIncluding" : "22", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r04encpu_firmware:52" :
        {"versionEndIncluding" : "52", "versionStartIncluding" : "52", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r08encpu_firmware:52" :
        {"versionEndIncluding" : "52", "versionStartIncluding" : "52", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r16encpu_firmware:52" :
        {"versionEndIncluding" : "52", "versionStartIncluding" : "52", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r32encpu_firmware:52" :
        {"versionEndIncluding" : "52", "versionStartIncluding" : "52", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r120encpu_firmware:52" :
        {"versionEndIncluding" : "52", "versionStartIncluding" : "52", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r00cpu_firmware:20" :
        {"versionEndIncluding" : "20", "versionStartIncluding" : "20", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r01cpu_firmware:20" :
        {"versionEndIncluding" : "20", "versionStartIncluding" : "20", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r02cpu_firmware:20" :
        {"versionEndIncluding" : "20", "versionStartIncluding" : "20", "family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r08pcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r08psfcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r120pcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r120psfcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r16mtcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r16pcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r16psfcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r32mtcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r32pcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r32psfcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_iq-r64mtcpu_firmware:-" :
        {"family" : "MELSECiQR"},
    "cpe:/o:mitsubishielectric:melsec_l02cpu-p_firmware:-" :
        {"family" : "MELSECL"},
    "cpe:/o:mitsubishielectric:melsec_l06cpu-p_firmware:-" :
        {"family" : "MELSECL"},
    "cpe:/o:mitsubishielectric:melsec_l26cpu-p_firmware:-" :
        {"family" : "MELSECL"},
    "cpe:/o:mitsubishielectric:melsec_l26cpu-pbt_firmware:-" :
        {"family" : "MELSECL"},
    "cpe:/o:mitsubishielectric:melsec_q-q170mcpu_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q170mscpu-s1_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q172dcpu-s1_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q172dscpu_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q173dcpu-s1_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-q173dscpu_firmware:-" :
        {"family" : "MELSECQ"},
    "cpe:/o:mitsubishielectric:melsec_q-qmr-mq100_firmware:-" :
        {"family" : "MELSECQ"}
};

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