PT-2017-9642 · Mitsubishi · Melsec-Q Series Ethernet Interface Modules Qj71E71-B2+2

Published 2017-02-13 · Updated 2021-09-13 · CVE-2016-8368

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-B5, all versions Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-B2, all versions

Description The issue allows 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.

Recommendations For Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all versions, restrict access to Port 5002/TCP to minimize the risk of exploitation. For Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-B5, all versions, restrict access to Port 5002/TCP to minimize the risk of exploitation. For Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-B2, all versions, restrict access to Port 5002/TCP to minimize the risk of exploitation.

Fix

Weakness Enumeration

CWE-662

Related Identifiers

CVE-2016-8368

Affected Products

Melsec-Q Series Ethernet Interface Modules Qj71E71-100

Melsec-Q Series Ethernet Interface Modules Qj71E71-B2

Melsec-Q Series Ethernet Interface Modules Qj71E71-B5

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2016-8368 · Security Note
• http://securityfocus.com/bid/94632 · Note
• https://t.me/cvenotify/20737 · Telegram Post
• https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03 · Note