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Mitsubishi Electric MELSEC-Q QJ71E71 series Improper Synchronization (CVE-2016-8368)

high Tenable OT Security Plugin ID 500241

Synopsis

The remote OT asset is affected by a vulnerability.

Description

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.

Solution

Refer to the vendor advisory.

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03

http://www.securityfocus.com/bid/94632

Plugin Details

Severity: High

ID: 500241

Version: 1.7

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 12/18/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2016-8368

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:mitsubishielectric:qj71e71-b2_firmware:-, cpe:/o:mitsubishielectric:qj71e71-b5_firmware:-, cpe:/o:mitsubishielectric:qj71e71-100_firmware:-

Required KB Items: Tenable.ot/Mitsubishi

Exploit Ease: No known exploits are available

Patch Publication Date: 2/13/2017

Vulnerability Publication Date: 2/13/2017

Reference Information

CVE: CVE-2016-8368

CWE: 662

ICSA: 16-336-03