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ID

VAR-202112-0168


CVE

CVE-2021-20852


TITLE

elecom lan routers buffer overflow vulnerability

Trust: 0.6

sources: CNVD: CNVD-2021-95489

DESCRIPTION

Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors. elecom lan routers is a router of Japan Elecom

Trust: 1.44

sources: NVD: CVE-2021-20852 // CNVD: CNVD-2021-95489

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-95489

AFFECTED PRODUCTS

vendor:elecommodel:wrh-733gbkscope:lteversion:1.02.9

Trust: 1.0

vendor:elecommodel:wrh-733gwhscope:lteversion:1.02.9

Trust: 1.0

vendor:elecommodel:lan routers <=wrh-733gbkscope:eqversion:v1.02.9

Trust: 0.6

vendor:elecommodel:lan routers <=wrh-733gwhscope:eqversion:v1.02.9

Trust: 0.6

sources: CNVD: CNVD-2021-95489 // NVD: CVE-2021-20852

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-20852
value: MEDIUM

Trust: 1.0

CNVD: CNVD-2021-95489
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202111-2348
value: MEDIUM

Trust: 0.6

nvd@nist.gov: CVE-2021-20852
severity: MEDIUM
baseScore: 5.2
vectorString: AV:A/AC:L/AU:S/C:P/I:P/A:P
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 5.1
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.0

CNVD: CNVD-2021-95489
severity: MEDIUM
baseScore: 5.2
vectorString: AV:A/AC:L/AU:S/C:P/I:P/A:P
accessVector: ADJACENT_NETWORK
accessComplexity: LOW
authentication: SINGLE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 5.1
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-20852
baseSeverity: MEDIUM
baseScore: 6.8
vectorString: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector: ADJACENT
attackComplexity: LOW
privilegesRequired: HIGH
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 0.9
impactScore: 5.9
version: 3.1

Trust: 1.0

sources: CNVD: CNVD-2021-95489 // CNNVD: CNNVD-202111-2348 // NVD: CVE-2021-20852

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

sources: NVD: CVE-2021-20852

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202111-2348

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202111-2348

PATCH

title:Patch for elecom lan routers buffer overflow vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/303611

Trust: 0.6

title:elecom lan Buffer error vulnerability fixurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=172271

Trust: 0.6

sources: CNVD: CNVD-2021-95489 // CNNVD: CNNVD-202111-2348

EXTERNAL IDS

db:NVDid:CVE-2021-20852

Trust: 2.2

db:JVNid:JVN88993473

Trust: 1.6

db:JVNDBid:JVNDB-2021-000108

Trust: 1.2

db:CNVDid:CNVD-2021-95489

Trust: 0.6

db:CS-HELPid:SB2021113002

Trust: 0.6

db:CNNVDid:CNNVD-202111-2348

Trust: 0.6

sources: CNVD: CNVD-2021-95489 // CNNVD: CNNVD-202111-2348 // NVD: CVE-2021-20852

REFERENCES

url:https://jvn.jp/en/jp/jvn88993473/index.html

Trust: 1.6

url:https://www.elecom.co.jp/news/security/20211130-01/

Trust: 1.6

url:https://jvndb.jvn.jp/en/contents/2021/jvndb-2021-000108.html

Trust: 1.2

url:https://nvd.nist.gov/vuln/detail/cve-2021-20852

Trust: 0.6

url:https://www.cybersecurity-help.cz/vdb/sb2021113002

Trust: 0.6

sources: CNVD: CNVD-2021-95489 // CNNVD: CNNVD-202111-2348 // NVD: CVE-2021-20852

SOURCES

db:CNVDid:CNVD-2021-95489
db:CNNVDid:CNNVD-202111-2348
db:NVDid:CVE-2021-20852

LAST UPDATE DATE

2024-08-14T13:22:35.325000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-95489date:2021-12-09T00:00:00
db:CNNVDid:CNNVD-202111-2348date:2021-12-08T00:00:00
db:NVDid:CVE-2021-20852date:2021-12-02T19:45:57.987

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-95489date:2021-12-09T00:00:00
db:CNNVDid:CNNVD-202111-2348date:2021-11-30T00:00:00
db:NVDid:CVE-2021-20852date:2021-12-01T03:15:06.713