Schneider Electric Modicon M340, MC80, and Momentum Unity M1E Improper Restriction of Operations Within the Bounds of a Memory Buffer (CVE-2024-8937)

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

include('compat.inc');

if (description)
{
  script_id(502685);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/14");

  script_cve_id("CVE-2024-8937");
  script_xref(name:"ICSA", value:"24-326-04");

  script_name(english:"Schneider Electric Modicon M340, MC80, and Momentum Unity M1E Improper Restriction of Operations Within the Bounds of a Memory Buffer (CVE-2024-8937)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Arbitrary code execution can potentially be achieved after a successful 
Man-In-The Middle attack followed by sending a crafted Modbus function 
call to tamper with memory area involved in the authentication process.

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-2024-317-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2024-317-03.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?05e64114");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-24-326-04");
  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.");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-8937");

  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:"2024/11/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/11/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/11/28");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_m340");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_mc80");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_momentum_171cbu78090_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_momentum_171cbu98090_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:schneider-electric:modicon_momentum_171cbu98091_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) 2024-2026 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:modicon_m340" :
        {"versionEndExcluding" : "SV3.65", "family" : "ModiconM340"},
    "cpe:/o:schneider-electric:modicon_mc80" :
        {"family" : "ModiconMC80"},
    "cpe:/o:schneider-electric:modicon_momentum_171cbu78090_firmware:-" :
        {"family" : "MomentumUnity"},
    "cpe:/o:schneider-electric:modicon_momentum_171cbu98090_firmware:-" :
        {"family" : "MomentumUnity"},
    "cpe:/o:schneider-electric:modicon_momentum_171cbu98091_firmware:-" :
        {"family" : "MomentumUnity"}
};

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