CVE-2016-8368
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 2.61% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-662
- Affected
- mitsubishielectric/qj71e71-100 firmware · mitsubishielectric/qj71e71-b5 firmware · mitsubishielectric/qj71e71-b2 firmware
- Source
- ics-cert@hq.dhs.gov
References
- http://www.securityfocus.com/bid/94632Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03Mitigation, Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/94632Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-16-336-03Mitigation, Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.