Details of VAR-202210-0051

ID

VAR-202210-0051

CVE

CVE-2022-34840

TITLE

Multiple vulnerabilities in Buffalo network equipment

Trust: 0.8

sources: JVNDB: JVNDB-2022-002444

DESCRIPTION

Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier. * Issue with enabling undocumented debugging features (CWE-912) - CVE-2022-39044 It was * Use hard-coded credentials (CWE-798) - CVE-2022-34840 It was * authentication bypass (CWE-288) - CVE-2022-40966 This vulnerability information is JPCERT/CC Report to JPCERT/CC Coordinated with the developer. Reporter : Zero Zero One Co., Ltd. It was * A user logged into the product accesses the debug function and any OS command is executed - CVE-2022-39044 It was * The setting of the product is changed by a third party on an adjacent network - CVE-2022-34840 It was * A third party on an adjacent network circumvents authentication and accesses the product illegally - CVE-2022-40966. Buffalo firmware is a network device of Japan's Buffalo company. 2.00 and previous versions

Trust: 2.25

sources: NVD: CVE-2022-34840 // JVNDB: JVNDB-2022-002444 // CNVD: CNVD-2022-87596 // VULMON: CVE-2022-34840

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2022-87596

AFFECTED PRODUCTS

vendor:	buffalo	model:	wzr-600dhp2	scope:	lte	version:	1.15	Trust: 1.0
vendor:	buffalo	model:	wzr-300hp	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-450hp	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-900dhp	scope:	lte	version:	1.15	Trust: 1.0
vendor:	buffalo	model:	hw-450hp-zwe	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-450hp-cwt	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-450hp-ub	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-d1100h	scope:	lte	version:	2.00	Trust: 1.0
vendor:	buffalo	model:	wzr-600dhp	scope:	lte	version:	2.00	Trust: 1.0
vendor:	バッファロー	model:	whr-g54s	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-g301n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-ampg	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-g300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr2-g300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	fs-g300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-hp-g302h	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wlae-ag300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-hp-ampg	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wrm-d2133hp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	dwr-pg	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-g144nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	ws024bf	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wrm-d2133hs	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-1900dhp3	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-1900dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-am54g54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-hp-ag300h	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-900dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-900dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wli-tx4-ag300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-1750dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-1166dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-g144n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr2-g108	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wtr-m2133hp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	bhr-4grv	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-1750dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-6000ax12s	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-450hp-cwt	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-g54s-ni	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-s600dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	ws024bf-nw	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-g	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-600dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wer-ag54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	hw-450hp-zwe	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-hp-g450h	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wem-1266	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wpl-05g300	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-1750dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wtr-m2133hs	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-ampg300nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-hp-g	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wer-a54g54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wer-am54g54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-300	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	dwr-hp-g300nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-agl300nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-300hp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-hp-gn	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-ampg144nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wer-amg54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-hp-g300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-hp-g301nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	fs-hp-g300n	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-1900dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-300hp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-hp-g300nh	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	fs-600dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-d1100h	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	fs-r600dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-450hp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wcr-300	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-s1750dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-600dhp3	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-5950ax12	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-s900dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-amg54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wli-h4-d600	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-450hp-ub	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wem-1266wp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	whr-hp-g54	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-1166dhp	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-1750dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wzr-600dhp2	scope:	-	version:	-	Trust: 0.8
vendor:	バッファロー	model:	wxr-6000ax12b	scope:	-	version:	-	Trust: 0.8
vendor:	buffalo	model:	wzr-300hp	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-450hp	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-600dhp	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-900dhp	scope:	lte	version:	<=1.15	Trust: 0.6
vendor:	buffalo	model:	hw-450hp-zwe	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-450hp-cwt	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-450hp-ub	scope:	lte	version:	<=2.00	Trust: 0.6
vendor:	buffalo	model:	wzr-600dhp2	scope:	lte	version:	<=1.15	Trust: 0.6
vendor:	buffalo	model:	wzr-d1100h	scope:	lte	version:	<=2.00	Trust: 0.6

sources: CNVD: CNVD-2022-87596 // JVNDB: JVNDB-2022-002444 // NVD: CVE-2022-34840

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2022-34840
value:	MEDIUM
Trust: 1.0
134c704f-9b21-4f2e-91b3-4a467353bcc0:	CVE-2022-34840
value:	MEDIUM
Trust: 1.0
OTHER:	JVNDB-2022-002444
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2022-87596
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202210-122
value:	MEDIUM
Trust: 0.6

CNVD:	CNVD-2022-87596
severity:	MEDIUM
baseScore:	6.1
vectorString:	AV:A/AC:L/AU:N/C:N/I:C/A:N
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	COMPLETE
availabilityImpact:	NONE
exploitabilityScore:	6.5
impactScore:	6.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2022-34840
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	HIGH
availabilityImpact:	NONE
exploitabilityScore:	2.8
impactScore:	3.6
version:	3.1
Trust: 2.0
OTHER:	JVNDB-2022-002444
baseSeverity:	MEDIUM
baseScore:	4.3
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	LOW
availabilityImpact:	NONE
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2022-87596 // JVNDB: JVNDB-2022-002444 // CNNVD: CNNVD-202210-122 // NVD: CVE-2022-34840 // NVD: CVE-2022-34840

PROBLEMTYPE DATA

problemtype:	CWE-798	Trust: 1.0
problemtype:	Unpublished features (CWE-912) [ others ]	Trust: 0.8
problemtype:	Use hard-coded credentials (CWE-798) [ others ]	Trust: 0.8
problemtype:	Authentication Bypass Using Alternate Paths or Channels (CWE-288) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2022-002444 // NVD: CVE-2022-34840

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202210-122

TYPE

trust management problem

Trust: 0.6

sources: CNNVD: CNNVD-202210-122

PATCH

title:	Multiple vulnerabilities in some products such as routers and countermeasures	url:	https://www.buffalo.jp/news/detail/20221003-01.html	Trust: 0.8
title:	Patch for Buffalo Trust Management Issue Vulnerability	url:	https://www.cnvd.org.cn/patchInfo/show/370981	Trust: 0.6
title:	Buffalo network devices Security vulnerabilities	url:	http://123.124.177.30/web/xxk/bdxqById.tag?id=216693	Trust: 0.6

sources: CNVD: CNVD-2022-87596 // JVNDB: JVNDB-2022-002444 // CNNVD: CNNVD-202210-122

EXTERNAL IDS

db:	NVD	id:	CVE-2022-34840	Trust: 3.1
db:	JVN	id:	JVNVU92805279	Trust: 2.5
db:	JVNDB	id:	JVNDB-2022-002444	Trust: 2.0
db:	CNVD	id:	CNVD-2022-87596	Trust: 0.6
db:	CNNVD	id:	CNNVD-202210-122	Trust: 0.6
db:	VULMON	id:	CVE-2022-34840	Trust: 0.1

sources: CNVD: CNVD-2022-87596 // VULMON: CVE-2022-34840 // JVNDB: JVNDB-2022-002444 // CNNVD: CNNVD-202210-122 // NVD: CVE-2022-34840

REFERENCES

url:	https://jvn.jp/en/vu/jvnvu92805279/index.html	Trust: 1.7
url:	https://www.buffalo.jp/news/detail/20221003-01.html	Trust: 1.7
url:	https://jvndb.jvn.jp/en/contents/2022/jvndb-2022-002444.html	Trust: 1.2
url:	http://jvn.jp/vu/jvnvu92805279/index.html	Trust: 0.8
url:	https://cxsecurity.com/cveshow/cve-2022-34840/	Trust: 0.6
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2022-87596 // VULMON: CVE-2022-34840 // JVNDB: JVNDB-2022-002444 // CNNVD: CNNVD-202210-122 // NVD: CVE-2022-34840

SOURCES

db:	CNVD	id:	CNVD-2022-87596
db:	VULMON	id:	CVE-2022-34840
db:	JVNDB	id:	JVNDB-2022-002444
db:	CNNVD	id:	CNNVD-202210-122
db:	NVD	id:	CVE-2022-34840

LAST UPDATE DATE

2025-04-25T01:39:38.148000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2022-87596	date:	2022-12-14T00:00:00
db:	VULMON	id:	CVE-2022-34840	date:	2022-12-07T00:00:00
db:	JVNDB	id:	JVNDB-2022-002444	date:	2022-10-12T09:04:00
db:	CNNVD	id:	CNNVD-202210-122	date:	2022-12-14T00:00:00
db:	NVD	id:	CVE-2022-34840	date:	2025-04-23T17:15:48.673

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2022-87596	date:	2022-12-14T00:00:00
db:	VULMON	id:	CVE-2022-34840	date:	2022-12-07T00:00:00
db:	JVNDB	id:	JVNDB-2022-002444	date:	2022-10-05T00:00:00
db:	CNNVD	id:	CNNVD-202210-122	date:	2022-10-04T00:00:00
db:	NVD	id:	CVE-2022-34840	date:	2022-12-07T10:15:10.303