Siemens InsydeH2O Time-of-check Time-of-use Race Condition (CVE-2022-32955)

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

include('compat.inc');

if (description)
{
  script_id(501733);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/22");

  script_cve_id("CVE-2022-32955");

  script_name(english:"Siemens InsydeH2O Time-of-check Time-of-use Race Condition (CVE-2022-32955)");

  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. DMA attacks on the NvmExpressDxe buffer used by SMM and non-SMM
code could cause TOCTOU race-condition issues that could lead to
corruption of SMRAM and escalation of privileges. This attack can be
mitigated by using IOMMU protection for the ACPI runtime memory used
for the command buffer. This attack can be mitigated by copying the
link data to SMRAM before checking it and verifying that all pointers
are within the buffer.

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");
  script_set_attribute(attribute:"see_also", value:"https://www.insyde.com/security-pledge/SA-2023015");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/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:H/PR:L/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-2022-32955");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(367);

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/02/15");
  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:5.3");
  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) 2023-2024 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:5.5" :
        {"versionEndExcluding" : "5.5.05.52.27", "versionStartIncluding" : "5.5", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.4" :
        {"versionEndExcluding" : "5.4.05.44.27", "versionStartIncluding" : "5.4", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.3" :
        {"versionEndExcluding" : "5.3.05.36.27", "versionStartIncluding" : "5.3", "family" : "APE1808"},
    "cpe:/a:insyde:insydeh2o:5.0" :
        {"versionEndExcluding" : "5.2.05.27.27", "versionStartIncluding" : "5.0", "family" : "APE1808"}
};

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