CVE-2020-13238 — HIGH (7.5)

Q: How severe is CVE-2020-13238?

CVE-2020-13238 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-13238?

Check the references section above for vendor advisories and patch information. Affected products include: Mitsubishielectric Melsec Iq-R00Cpu Firmware, Mitsubishielectric Melsec Iq-R00Cpu, Mitsubishielectric Melsec Iq-R01Cpu Firmware, Mitsubishielectric Melsec Iq-R01Cpu, Mitsubishielectric Melsec Iq-R02Cpu Firmware.

Vulnerability 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 Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mitsubishielectric	Melsec Iq-R00Cpu Firmware	<= 7
Mitsubishielectric	Melsec Iq-R00Cpu	-
Mitsubishielectric	Melsec Iq-R01Cpu Firmware	<= 7
Mitsubishielectric	Melsec Iq-R01Cpu	-
Mitsubishielectric	Melsec Iq-R02Cpu Firmware	<= 7
Mitsubishielectric	Melsec Iq-R02Cpu	-
Mitsubishielectric	Melsec Iq-R04Cpu Firmware	<= 39
Mitsubishielectric	Melsec Iq-R04Cpu	-
Mitsubishielectric	Melsec Iq-R08Cpu Firmware	<= 39
Mitsubishielectric	Melsec Iq-R08Cpu	-
Mitsubishielectric	Melsec Iq-R16Cpu Firmware	<= 39
Mitsubishielectric	Melsec Iq-R16Cpu	-
Mitsubishielectric	Melsec Iq-R32Cpu Firmware	<= 39
Mitsubishielectric	Melsec Iq-R32Cpu	-
Mitsubishielectric	Melsec Iq-R120Cpu Firmware	<= 39
Mitsubishielectric	Melsec Iq-R120Cpu	-
Mitsubishielectric	Melsec Iq-R08Fcpu Firmware	<= 20
Mitsubishielectric	Melsec Iq-R08Fcpu	-
Mitsubishielectric	Melsec Iq-R16Fcpu Firmware	<= 20
Mitsubishielectric	Melsec Iq-R16Fcpu	-

Related Weaknesses (CWE)

CWE-400

References

http://jvn.jp/vu/JVNVU97662844/index.htmlThird Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdfVendor Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-02Third Party AdvisoryUS Government Resource
http://jvn.jp/vu/JVNVU97662844/index.htmlThird Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-001_en.pdfVendor Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-02Third Party AdvisoryUS Government Resource

FAQ

What is CVE-2020-13238?

CVE-2020-13238 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2020-13238?

CVE-2020-13238 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-13238?

Check the references section above for vendor advisories and patch information. Affected products include: Mitsubishielectric Melsec Iq-R00Cpu Firmware, Mitsubishielectric Melsec Iq-R00Cpu, Mitsubishielectric Melsec Iq-R01Cpu Firmware, Mitsubishielectric Melsec Iq-R01Cpu, Mitsubishielectric Melsec Iq-R02Cpu Firmware.