5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.5%
An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service, requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(500241);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/15");
script_cve_id("CVE-2016-8368");
script_name(english:"Mitsubishi MELSEC-Q QJ71E71 series Improper Synchronization (CVE-2016-8368)");
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 Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all
versions, QJ71E71-B5, all versions, and QJ71E71-B2, all versions. The affected Ethernet interface module is connected to
a MELSEC-Q PLC, which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service,
requiring the PLC to be reset to resume operation. This is caused by an Unrestricted Externally Accessible Lock. 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://ics-cert.us-cert.gov/advisories/ICSA-16-336-03");
script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/94632");
script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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-2016-8368");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(662);
script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/13");
script_set_attribute(attribute:"patch_publication_date", value:"2017/02/13");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/07");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:qj71e71-100_firmware:-");
script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:qj71e71-b5_firmware:-");
script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:qj71e71-b2_firmware:-");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Tenable.ot");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("tenable_ot_api_integration.nasl");
script_require_keys("Tenable.ot/Mitsubishi");
exit(0);
}
include('tenable_ot_cve_funcs.inc');
get_kb_item_or_exit('Tenable.ot/Mitsubishi');
var asset = tenable_ot::assets::get(vendor:'Mitsubishi');
var vuln_cpes = {
"cpe:/o:mitsubishielectric:qj71e71-100_firmware:-" :
{"family" : "MELSECQ"},
"cpe:/o:mitsubishielectric:qj71e71-b5_firmware:-" :
{"family" : "MELSECQ"},
"cpe:/o:mitsubishielectric:qj71e71-b2_firmware:-" :
{"family" : "MELSECQ"}
};
tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_WARNING);
Vendor | Product | Version | CPE |
---|---|---|---|
mitsubishielectric | qj71e71-100_firmware | - | cpe:/o:mitsubishielectric:qj71e71-100_firmware:- |
mitsubishielectric | qj71e71-b5_firmware | - | cpe:/o:mitsubishielectric:qj71e71-b5_firmware:- |
mitsubishielectric | qj71e71-b2_firmware | - | cpe:/o:mitsubishielectric:qj71e71-b2_firmware:- |
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
8.6 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
52.5%