CVE-2021-20853

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 arbitrary OS commands via unspecified vectors.

CVSS v3 6.8 MEDIUM
CVSS v2.0 5.2 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.2^/10

CVSS v2.0 : MEDIUM

Vector : AV:A/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 5.1 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://jvn.jp/en/jp/JVN88993473/index.html	Third Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/	Vendor Advisory
https://jvn.jp/en/jp/JVN88993473/index.html	Third Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:elecom:wrh-733gwh:-:*:*:*:*:*:*:*

History

21 Nov 2024, 05:47

Type	Values Removed	Values Added
References	~~() https://jvn.jp/en/jp/JVN88993473/index.html - Third Party Advisory~~	() https://jvn.jp/en/jp/JVN88993473/index.html - Third Party Advisory
References	~~() https://www.elecom.co.jp/news/security/20211130-01/ - Vendor Advisory~~	() https://www.elecom.co.jp/news/security/20211130-01/ - Vendor Advisory

Information

Published : 2021-12-01 03:15

Updated : 2024-11-21 05:47

NVD link : CVE-2021-20853

Mitre link : CVE-2021-20853

CVE.ORG link : CVE-2021-20853

JSON object : View

Products Affected

elecom

wrh-733gbk_firmware
wrh-733gwh
wrh-733gbk
wrh-733gwh_firmware

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2021-20853", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.2, "accessVector": "ADJACENT_NETWORK", "vectorString": "AV:A/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 5.1, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}]}, "published": "2021-12-01T03:15:06.757", "references": [{"url": "https://jvn.jp/en/jp/JVN88993473/index.html", "tags": ["Third Party Advisory"], "source": "vultures@jpcert.or.jp"}, {"url": "https://www.elecom.co.jp/news/security/20211130-01/", "tags": ["Vendor Advisory"], "source": "vultures@jpcert.or.jp"}, {"url": "https://jvn.jp/en/jp/JVN88993473/index.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.elecom.co.jp/news/security/20211130-01/", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "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 arbitrary OS commands via unspecified vectors."}, {"lang": "es", "value": "Los routers LAN de ELECOM (firmware WRH-733GBK versiones v1.02.9 y anteriores y firmware WRH-733GWH versiones v1.02.9 y anteriores) permiten a un atacante adyacente a la red con privilegios de administrador ejecutar comandos arbitrarios del sistema operativo por medio de vectores no especificados"}], "lastModified": "2024-11-21T05:47:16.980", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28989732-6761-4356-A4CF-BE172E72C41B", "versionEndIncluding": "1.02.9"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "84FA6C86-7C8A-4CF5-9065-CDECDFF65F7E"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9AC22BBF-F3CF-4B47-B314-BA3DA9A4663D", "versionEndIncluding": "1.02.9"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:elecom:wrh-733gwh:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "08BFC900-6728-4EDB-8CC9-27101DF47FC9"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "vultures@jpcert.or.jp"}