CVE-2016-8368 Denial of service in Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module
Remote attackers can cause a denial of service on Mitsubishi MELSEC-Q PLCs by exploiting an unrestricted lock on the Ethernet interface, requiring a manual reset.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-8368?
CVE-2016-8368 is a high-severity denial of service vulnerability in Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module, published on 13 Feb 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-662
Which versions are affected by CVE-2016-8368?
It affects 3 products.
Products include Mitsubishielectric Qj71e71-100 Firmware, Mitsubishielectric Qj71e71-B2 Firmware, Mitsubishielectric Qj71e71-B5 Firmware.
How do I fix CVE-2016-8368?
No fix has been published for CVE-2016-8368 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2016-8368 being exploited?
There is no known exploitation of CVE-2016-8368 in the wild and no public exploit code.
Other vulnerabilities in Mitsubishi Electric MELSEC-Q Series Ethernet Interface Module
Sources
Also known as GHSA-v2rq-g9fx-7mr6.