8.2 High
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
0.0004 Low
EPSS
Percentile
12.6%
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM memory corruption vulnerability in the FvbServicesRuntimeDxe driver allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
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(501685);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/27");
script_cve_id("CVE-2022-35893");
script_name(english:"Siemens InsydeH2O Improper Input Validation (CVE-2022-35893)");
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. An SMM memory corruption vulnerability in the
FvbServicesRuntimeDxe driver allows an attacker to write fixed or
predictable data to SMRAM. Exploiting this issue could lead to
escalating privileges to SMM.
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-2022035");
script_set_attribute(attribute:"see_also", value:"https://www.insyde.com/security-pledge");
script_set_attribute(attribute:"see_also", value:"https://binarly.io/advisories/BRLY-2022-026/index.html");
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:U/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:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-35893");
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:"2022/09/23");
script_set_attribute(attribute:"patch_publication_date", value:"2022/09/23");
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);
8.2 High
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
0.0004 Low
EPSS
Percentile
12.6%