Vulnerability CVE-2016-8368


Published: 2017-02-13   Modified: 2017-02-14

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.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Mitsubishi electric -> Qj71e71-b5 firmware 
Mitsubishi electric -> Qj71e71-100 firmware 
Mitsubishi electric -> Qj71e71-b2 firmware 

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

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