Omron CS/CJ Series Denial of Service (CVE-2023-38744)

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

include('compat.inc');

if (description)
{
  script_id(501603);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/06");

  script_cve_id("CVE-2023-38744");

  script_name(english:"Omron CS/CJ Series Denial of Service (CVE-2023-38744)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Denial-of-service (DoS) vulnerability due to improper validation of
specified type of input issue exists in the built-in EtherNet/IP port
of the CJ Series CJ2 CPU unit and the communication function of the
CS/CJ Series EtherNet/IP unit. If an affected product receives a
packet which is specially crafted by a remote unauthenticated
attacker, the unit of the affected product may fall into a denial-of-
service (DoS) condition. Affected products/versions are as follows:
CJ2M CPU Unit CJ2M-CPU3[] Unit version of the built-in EtherNet/IP
section Ver. 2.18 and earlier, CJ2H CPU Unit CJ2H-CPU6[]-EIP Unit
version of the built-in EtherNet/IP section Ver. 3.04 and earlier,
CS/CJ Series EtherNet/IP Unit CS1W-EIP21 V3.04 and earlier, and CS/CJ
Series EtherNet/IP Unit CJ1W-EIP21 V3.04 and earlier.

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://www.ia.omron.com/product/vulnerability/OMSR-2023-006_en.pdf");
  script_set_attribute(attribute:"see_also", value:"https://jvn.jp/en/vu/JVNVU92193064/");
  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-2023-38744");

  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:"2023/08/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/11");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj1w-eip21_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2h-cpu64-eip_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2h-cpu65-eip_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2h-cpu66-eip_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2h-cpu67-eip_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2h-cpu68-eip_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2m-cpu31_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2m-cpu32_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2m-cpu33_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2m-cpu34_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cj2m-cpu35_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:omron:cs1w-eip21_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) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Omron');

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

var vuln_cpes = {
    "cpe:/o:omron:cj2m-cpu35_firmware" :
        {"versionEndIncluding" : "2.18", "family" : "CJ2M"},
    "cpe:/o:omron:cj2m-cpu34_firmware" :
        {"versionEndIncluding" : "2.18", "family" : "CJ2M"},
    "cpe:/o:omron:cj2m-cpu33_firmware" :
        {"versionEndIncluding" : "2.18", "family" : "CJ2M"},
    "cpe:/o:omron:cj2m-cpu32_firmware" :
        {"versionEndIncluding" : "2.18", "family" : "CJ2M"},
    "cpe:/o:omron:cj2m-cpu31_firmware" :
        {"versionEndIncluding" : "2.18", "family" : "CJ2M"},
    "cpe:/o:omron:cj2h-cpu68-eip_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ2H"},
    "cpe:/o:omron:cj2h-cpu67-eip_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ2H"},
    "cpe:/o:omron:cj2h-cpu66-eip_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ2H"},
    "cpe:/o:omron:cj2h-cpu65-eip_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ2H"},
    "cpe:/o:omron:cj2h-cpu64-eip_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ2H"},
    "cpe:/o:omron:cs1w-eip21_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CS1"},
    "cpe:/o:omron:cj1w-eip21_firmware" :
        {"versionEndIncluding" : "3.04", "family" : "CJ1"}
};

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