Siemens InsydeH2O Improper Input Validation (CVE-2020-27339)

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

include('compat.inc');

if (description)
{
  script_id(501693);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/27");

  script_cve_id("CVE-2020-27339");

  script_name(english:"Siemens InsydeH2O Improper Input Validation (CVE-2020-27339)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not
correctly validate the CommBuffer and CommBufferSize parameters,
allowing callers to corrupt either the firmware or the OS memory. The
fixed versions for this issue in the AhciBusDxe, IdeBusDxe,
NvmExpressDxe, SdHostDriverDxe, and SdMmcDeviceDxe drivers are
05.16.25, 05.26.25, 05.35.25, 05.43.25, and 05.51.25 (for Kernel 5.1
through 5.5).

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-2021001");
  script_set_attribute(attribute:"see_also", value:"https://security.netapp.com/advisory/ntap-20220216-0005/");
  script_set_attribute(attribute:"see_also", value:"https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/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:H/UI:N/S:U/C:H/I:H/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-2020-27339");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20);

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/06/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/06/16");
  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:/o:insyde:insydeh2o:5.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:insyde:insydeh2o:5.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:insyde:insydeh2o:5.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:insyde:insydeh2o:5.4");
  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:/o:insyde:insydeh2o:5.3" :
        {"versionEndExcluding" : "5.35.25", "versionStartIncluding" : "5.3", "family" : "APE1808"},
    "cpe:/o:insyde:insydeh2o:5.2" :
        {"versionEndExcluding" : "5.26.25", "versionStartIncluding" : "5.2", "family" : "APE1808"},
    "cpe:/o:insyde:insydeh2o:5.1" :
        {"versionEndExcluding" : "5.16.25", "versionStartIncluding" : "5.1", "family" : "APE1808"},
    "cpe:/o:insyde:insydeh2o:5.4" :
        {"versionEndExcluding" : "5.43.25", "versionStartIncluding" : "5.4", "family" : "APE1808"}
};

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