Siemens InsydeH2O Improper Information Protection (CVE-2023-27471)

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

include('compat.inc');

if (description)
{
  script_id(501730);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/27");

  script_cve_id("CVE-2023-27471");

  script_name(english:"Siemens InsydeH2O Improper Information Protection (CVE-2023-27471)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"An issue was discovered in Insyde InsydeH2O with kernel 5.0 through
5.5. UEFI implementations do not correctly protect and validate
information contained in the 'MeSetup' UEFI variable. On some systems,
this variable can be overwritten using operating system APIs.
Exploitation of this vulnerability could potentially lead to denial of
service for the platform.

Insyde BIOS is typically used in RUGGEDCOM APE products 
and some SIMATIC devices. Please refer to the vendor advisory for a 
precise list of models concerned.

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.insyde.com/security-pledge/SA-2023036");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/AC:L/PR:L/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-2023-27471");

  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:"2023/08/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/26");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.4");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:insyde:insydeh2o:5.5");
  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) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Siemens');

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

var vuln_cpes = {
    "cpe:/a:insyde:insydeh2o:5.0" :
        {"versionEndIncluding" : "5.0", "versionStartIncluding" : "5.0", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.1" :
        {"versionEndIncluding" : "5.1", "versionStartIncluding" : "5.1", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.2" :
        {"versionEndIncluding" : "5.2", "versionStartIncluding" : "5.2", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.3" :
        {"versionEndIncluding" : "5.3", "versionStartIncluding" : "5.3", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.4" :
        {"versionEndIncluding" : "5.4", "versionStartIncluding" : "5.4", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.5" :
        {"versionEndIncluding" : "5.5", "versionStartIncluding" : "5.5", "family" : "APE1808"}
};

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