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ID

VAR-202106-0642


CVE

CVE-2021-20731


TITLE

Buffalo router  WSR-1166DHP3  and  WSR-1166DHP4  Multiple vulnerabilities in

Trust: 0.8

sources: JVNDB: JVNDB-2021-001575

DESCRIPTION

WSR-1166DHP3 firmware Ver.1.16 and prior and WSR-1166DHP4 firmware Ver.1.02 and prior allow an attacker to execute arbitrary OS commands with root privileges via unspecified vectors. Provided by Buffalo Inc. WSR-1166DHP3 and WSR-1166DHP4 The following multiple vulnerabilities exist in. * Inadequate access restrictions (CWE-284) - CVE-2021-20730 ‥ * OS Command injection (CWE-78) - CVE-2021-20731 The following is the vulnerability information JPCERT/CC Report to JPCERT/CC Coordinated with the developers. Reporter : Zero Zero One Co., Ltd. Hayakawa Soraya MrThe expected impact depends on each vulnerability, but it may be affected as follows. * Device configuration information stolen by an attacker on an adjacent network - CVE-2021-20730 ‥ * By an attacker on an adjacent network root Some with authority OS Command is executed - CVE-2021-20731. Buffalo WSR-1166DHP3 and WSR-1166DHP4 have operating system command injection vulnerability

Trust: 2.16

sources: NVD: CVE-2021-20731 // JVNDB: JVNDB-2021-001575 // CNVD: CNVD-2021-56797

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-56797

AFFECTED PRODUCTS

vendor:buffalomodel:wsr-1166dhp4scope:lteversion:1.02

Trust: 1.0

vendor:buffalomodel:wsr-1166dhp3scope:lteversion:1.16

Trust: 1.0

vendor:バッファローmodel:wsr-1166dhp4scope: - version: -

Trust: 0.8

vendor:バッファローmodel:wsr-1166dhp3scope: - version: -

Trust: 0.8

vendor:buffalomodel:wsr-1166dhp3scope:lteversion:<=1.16

Trust: 0.6

vendor:buffalomodel:wsr-1166dhp4scope:lteversion:<=1.02

Trust: 0.6

sources: CNVD: CNVD-2021-56797 // JVNDB: JVNDB-2021-001575 // NVD: CVE-2021-20731

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-20731
value: HIGH

Trust: 1.0

IPA: JVNDB-2021-001575
value: MEDIUM

Trust: 0.8

CNVD: CNVD-2021-56797
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202105-2003
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-20731
severity: HIGH
baseScore: 8.3
vectorString: AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 6.5
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.0

CNVD: CNVD-2021-56797
severity: HIGH
baseScore: 8.3
vectorString: AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 6.5
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-20731
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.8
impactScore: 5.9
version: 3.1

Trust: 1.0

IPA: JVNDB-2021-001575
baseSeverity: MEDIUM
baseScore: 5.4
vectorString: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
attackVector: ADJACENT NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: LOW
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-56797 // JVNDB: JVNDB-2021-001575 // CNNVD: CNNVD-202105-2003 // NVD: CVE-2021-20731

PROBLEMTYPE DATA

problemtype:CWE-78

Trust: 1.0

problemtype:Inappropriate access control (CWE-284) [IPA Evaluation ]

Trust: 0.8

problemtype:OS Command injection (CWE-78) [IPA Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-001575 // NVD: CVE-2021-20731

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202105-2003

TYPE

operating system commend injection

Trust: 0.6

sources: CNNVD: CNNVD-202105-2003

PATCH

title:WSR-1166DHP4/WSR-1166DHP3  Multiple vulnerabilities inurl:https://www.buffalo.jp/news/detail/20210531-01.html

Trust: 0.8

title:Patch for Buffalo WSR-1166DHP3 and WSR-1166DHP4 operating system command injection vulnerabilitiesurl:https://www.cnvd.org.cn/patchInfo/show/283471

Trust: 0.6

title:BUFFALO INC WSR-1166DHP3-BK Fixes for operating system command injection vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=153497

Trust: 0.6

sources: CNVD: CNVD-2021-56797 // JVNDB: JVNDB-2021-001575 // CNNVD: CNNVD-202105-2003

EXTERNAL IDS

db:NVDid:CVE-2021-20731

Trust: 3.0

db:JVNid:JVNVU92862829

Trust: 2.4

db:JVNDBid:JVNDB-2021-001575

Trust: 1.4

db:CNVDid:CNVD-2021-56797

Trust: 0.6

db:CNNVDid:CNNVD-202105-2003

Trust: 0.6

sources: CNVD: CNVD-2021-56797 // JVNDB: JVNDB-2021-001575 // CNNVD: CNNVD-202105-2003 // NVD: CVE-2021-20731

REFERENCES

url:https://www.buffalo.jp/news/detail/20210531-01.html

Trust: 2.2

url:https://jvn.jp/en/vu/jvnvu92862829/index.html

Trust: 1.6

url:http://jvn.jp/cert/jvnvu92862829

Trust: 0.8

url:https://jvndb.jvn.jp/en/contents/2021/jvndb-2021-001575.html

Trust: 0.6

sources: CNVD: CNVD-2021-56797 // JVNDB: JVNDB-2021-001575 // CNNVD: CNNVD-202105-2003 // NVD: CVE-2021-20731

SOURCES

db:CNVDid:CNVD-2021-56797
db:JVNDBid:JVNDB-2021-001575
db:CNNVDid:CNNVD-202105-2003
db:NVDid:CVE-2021-20731

LAST UPDATE DATE

2024-08-14T14:03:09.041000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-56797date:2021-07-30T00:00:00
db:JVNDBid:JVNDB-2021-001575date:2021-06-01T03:28:00
db:CNNVDid:CNNVD-202105-2003date:2021-06-17T00:00:00
db:NVDid:CVE-2021-20731date:2021-06-16T16:30:14.960

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-56797date:2021-07-30T00:00:00
db:JVNDBid:JVNDB-2021-001575date:2021-06-01T00:00:00
db:CNNVDid:CNNVD-202105-2003date:2021-05-31T00:00:00
db:NVDid:CVE-2021-20731date:2021-06-09T02:15:06.787