Details of VAR-202112-0207

ID

VAR-202112-0207

CVE

CVE-2021-20609

TITLE

MELSEC and MELIPC Series resource exhaustion vulnerabilities

Trust: 0.8

sources: JVNDB: JVNDB-2021-005271

DESCRIPTION

Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery. MELSEC and MELIPC There is a resource exhaustion vulnerability in the series.Denial of service (DoS) It may be put into a state

Trust: 1.62

sources: NVD: CVE-2021-20609 // JVNDB: JVNDB-2021-005271

AFFECTED PRODUCTS

vendor:	mitsubishi	model:	melsec q26udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q100udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q13udpvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melipc mi5122-vw	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q24dhccpu-v\	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r32 sfcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r16 cpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q50udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q12dccpu-v	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r32 pcpu	scope:	lte	version:	29	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r04 pcpu	scope:	lte	version:	29	Trust: 1.0
vendor:	mitsubishi	model:	melsec q03udvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec mr-mq100	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q06udvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec q172dscpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r08 cpu	scope:	lte	version:	57	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r16 cpu	scope:	lte	version:	57	Trust: 1.0
vendor:	mitsubishi	model:	melsec l26cpu-\ bt	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r64 mtcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q04udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q173dscpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r16 sfcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r32 mtcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r02 cpu	scope:	lte	version:	24	Trust: 1.0
vendor:	mitsubishi	model:	melsec q26udpvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec q04udpvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec l02cpu\	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r08 cpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r120 cpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q170mscpu\	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q173dcpu-s1	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r120 cpu	scope:	lte	version:	57	Trust: 1.0
vendor:	mitsubishi	model:	melsec q26dhccpu-ls	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec q10udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r120 sfcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec l26cpu\	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q20udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r16 mtcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec l06cpu\	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r08 sfcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r08 pcpu	scope:	lte	version:	29	Trust: 1.0
vendor:	mitsubishi	model:	melsec q06udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r01 cpu	scope:	lte	version:	24	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r32 cpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r04 cpu	scope:	lte	version:	57	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r12 ccpu-v	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q04udvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec q06udpvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r32 cpu	scope:	lte	version:	57	Trust: 1.0
vendor:	mitsubishi	model:	melsec q13udvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r16 pcpu	scope:	lte	version:	29	Trust: 1.0
vendor:	mitsubishi	model:	melsec q03udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q170mcpu	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r120 pcpu	scope:	lte	version:	29	Trust: 1.0
vendor:	mitsubishi	model:	melsec q26udvcpu	scope:	eq	version:	-	Trust: 1.0
vendor:	mitsubishi	model:	melsec iq-r r00 cpu	scope:	lte	version:	24	Trust: 1.0
vendor:	mitsubishi	model:	melsec q172dcpu-s1	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q24dhccpu-ls	scope:	eq	version:	*	Trust: 1.0
vendor:	mitsubishi	model:	melsec q13udecpu	scope:	eq	version:	*	Trust: 1.0
vendor:	三菱電機	model:	melsec iq-r r02cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r32cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r00cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r01cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r120cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r04cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r16pcpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r16cpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r08pcpu	scope:	-	version:	-	Trust: 0.8
vendor:	三菱電機	model:	melsec iq-r r08cpu	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2021-005271 // NVD: CVE-2021-20609

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-20609
value:	HIGH
Trust: 1.0
Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp:	CVE-2021-20609
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-20609
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202111-2335
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2021-20609
severity:	HIGH
baseScore:	7.8
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:C
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	COMPLETE
exploitabilityScore:	10.0
impactScore:	6.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8

nvd@nist.gov:	CVE-2021-20609
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	3.6
version:	3.1
Trust: 2.0
NVD:	CVE-2021-20609
baseSeverity:	HIGH
baseScore:	7.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2021-005271 // CNNVD: CNNVD-202111-2335 // NVD: CVE-2021-20609 // NVD: CVE-2021-20609

PROBLEMTYPE DATA

problemtype:	CWE-400	Trust: 1.0
problemtype:	Resource exhaustion (CWE-400) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-005271 // NVD: CVE-2021-20609

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202111-2335

TYPE

resource management error

Trust: 0.6

sources: CNNVD: CNNVD-202111-2335

PATCH

title:	Multiple Denial-of-Service Vulnerabilities in Ethernet port of MELSEC and MELIPC Series Mitsubishi Electric Corporation	url:	https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-019_en.pdf	Trust: 0.8
title:	Mitsubishi Electric MELSEC Q series Remediation of resource management error vulnerabilities	url:	http://123.124.177.30/web/xxk/bdxqById.tag?id=173807	Trust: 0.6

sources: JVNDB: JVNDB-2021-005271 // CNNVD: CNNVD-202111-2335

EXTERNAL IDS

db:	NVD	id:	CVE-2021-20609	Trust: 3.2
db:	ICS CERT	id:	ICSA-21-334-02	Trust: 2.4
db:	JVN	id:	JVNVU94434051	Trust: 2.4
db:	JVNDB	id:	JVNDB-2021-005271	Trust: 0.8
db:	AUSCERT	id:	ESB-2021.4034	Trust: 0.6
db:	CS-HELP	id:	SB2021120105	Trust: 0.6
db:	CNNVD	id:	CNNVD-202111-2335	Trust: 0.6

sources: JVNDB: JVNDB-2021-005271 // CNNVD: CNNVD-202111-2335 // NVD: CVE-2021-20609

REFERENCES

url:	https://jvn.jp/vu/jvnvu94434051/index.html	Trust: 2.4
url:	https://us-cert.cisa.gov/ics/advisories/icsa-21-334-02	Trust: 2.2
url:	https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-019_en.pdf	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2021-20609	Trust: 1.4
url:	https://www.cisa.gov/uscert/ics/advisories/icsa-21-334-02	Trust: 0.8
url:	https://www.auscert.org.au/bulletins/esb-2021.4034	Trust: 0.6
url:	https://www.cybersecurity-help.cz/vdb/sb2021120105	Trust: 0.6

sources: JVNDB: JVNDB-2021-005271 // CNNVD: CNNVD-202111-2335 // NVD: CVE-2021-20609

CREDITS

Mitsubishi Electric reported these vulnerabilities to CISA.

Trust: 0.6

sources: CNNVD: CNNVD-202111-2335

SOURCES

db:	JVNDB	id:	JVNDB-2021-005271
db:	CNNVD	id:	CNNVD-202111-2335
db:	NVD	id:	CVE-2021-20609

LAST UPDATE DATE

2024-08-14T13:53:44.815000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2021-005271	date:	2021-12-10T04:34:00
db:	CNNVD	id:	CNNVD-202111-2335	date:	2022-11-25T00:00:00
db:	NVD	id:	CVE-2021-20609	date:	2023-11-09T09:15:07.430

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2021-005271	date:	2021-12-10T00:00:00
db:	CNNVD	id:	CNNVD-202111-2335	date:	2021-11-30T00:00:00
db:	NVD	id:	CVE-2021-20609	date:	2021-12-01T16:15:07.467