Detections
Analytics

Mitsubishi MELSEC-Q Ethernet Interface Modules Denial of Service

high Nessus Network Monitor Plugin ID 720089

Synopsis

An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules which may allow a remote attacker to connect to the PLC via Port 5002/TCP and cause a denial of service.

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.

Solution

Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

http://www.securityfocus.com/bid/94632,https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03

Plugin Details

Severity: High

ID: 720089

Family: SCADA

Published: 5/8/2019

Updated: 9/30/2019

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 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

Patch Publication Date: 12/1/2016

Vulnerability Publication Date: 12/1/2016

Reference Information

CVE: CVE-2016-8368

BID: 94632