CVE-2020-13238 Information

Description

Mitsubishi MELSEC iQ-R Series PLCs with firmware 33 allow attackers to halt the industrial process by sending an unauthenticated crafted packet over the network because this denial of service attack consumes excessive CPU time. After halting physical access to the PLC is required in order to restore production.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://jvn.jp/vu/JVNVU97662844/index.html https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdf https://www.us-cert.gov/ics/advisories/icsa-20-161-02

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5