Schneider Electric Modicon Improper Restriction of Operations within the Bounds of a Memory Buffer (CVE-2018-7838)

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

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

if (description)
{
  script_id(500522);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/30");

  script_cve_id("CVE-2018-7838");

  script_name(english:"Schneider Electric Modicon Improper Restriction of Operations within the Bounds of a Memory Buffer (CVE-2018-7838)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"A CWE-119 Buffer Errors vulnerability exists in Modicon M580 CPU -
BMEP582040, all versions before V2.90, and Modicon Ethernet Module
BMENOC0301, all versions before V2.16, which could cause denial of
service on the FTP service of the controller or the Ethernet BMENOC
module when it receives a FTP CWD command with a data length greater
than 1020 bytes. A power cycle is then needed to reactivate the FTP
service.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2019-190-03
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?11a4418c");
  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-2018-7838");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(119);

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/15");
  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:schneider-electric:bmeh582040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:bmeh586040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:bmenoc0301_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep581020_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep582020_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep582040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep582040s_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep583020_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep583040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep584020_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep584040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep585040_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m580_bmep586040_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) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Schneider');

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

var vuln_cpes = {
    "cpe:/o:schneider-electric:bmenoc0301_firmware" :
        {"versionEndExcluding" : "2.16", "family" : "ModiconM340M580CP"},
    "cpe:/o:schneider-electric:modicon_m580_bmep584040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep586040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:bmeh586040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep581020_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep582020_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep582040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep583020_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep583040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep584020_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep585040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:modicon_m580_bmep582040s_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"},
    "cpe:/o:schneider-electric:bmeh582040_firmware" :
        {"versionEndExcluding" : "2.90", "family" : "ModiconM580"}
};

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