CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS
Percentile
33.4%
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. The FwBlockSericceSmm driver does not properly validate input parameters for a software SMI routine, leading to memory corruption of arbitrary addresses including SMRAM, and possible arbitrary code execution.
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.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(501707);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/27");
script_cve_id("CVE-2022-35895");
script_name(english:"Siemens InsydeH2O Out-of-bounds Write (CVE-2022-35895)");
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. The FwBlockSericceSmm driver does not properly validate input
parameters for a software SMI routine, leading to memory corruption of
arbitrary addresses including SMRAM, and possible arbitrary code
execution.
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://binarly.io/advisories/BRLY-2022-024/index.html");
script_set_attribute(attribute:"see_also", value:"https://www.insyde.com/security-pledge/SA-2022033");
script_set_attribute(attribute:"see_also", value:"https://www.insyde.com/security-pledge");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-35895");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_cwe_id(787);
script_set_attribute(attribute:"vuln_publication_date", value:"2022/09/21");
script_set_attribute(attribute:"patch_publication_date", value:"2022/09/21");
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" :
{"versionEndExcluding" : "5.09.37", "versionStartIncluding" : "5.0", "family" : "APE1808"},
"cpe:/a:insyde:insydeh2o:5.1" :
{"versionEndExcluding" : "5.17.37", "versionStartIncluding" : "5.1", "family" : "APE1808"},
"cpe:/a:insyde:insydeh2o:5.2" :
{"versionEndExcluding" : "5.27.29", "versionStartIncluding" : "5.2", "family" : "APE1808"},
"cpe:/a:insyde:insydeh2o:5.3" :
{"versionEndExcluding" : "5.36.29", "versionStartIncluding" : "5.3", "family" : "APE1808"},
"cpe:/a:insyde:insydeh2o:5.4" :
{"versionEndExcluding" : "5.44.29", "versionStartIncluding" : "5.4", "family" : "APE1808"},
"cpe:/a:insyde:insydeh2o:5.5" :
{"versionEndExcluding" : "5.52.29", "versionStartIncluding" : "5.5", "family" : "APE1808"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);