{ "id": "CVE-2021-20856", "sourceIdentifier": "vultures@jpcert.or.jp", "published": "2021-12-01T03:15:06.897", "lastModified": "2021-12-02T16:28:41.313", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "Cross-site scripting vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors." }, { "lang": "es", "value": "Una vulnerabilidad de tipo cross-site scripting en los routers LAN de ELECOM (firmware WRH-733GBK versiones v1.02.9 y anteriores y firmware WRH-733GWH versiones v1.02.9 y anteriores) permite a un atacante remoto autenticado inyectar un script arbitrario por vectores no especificados" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 2.3, "impactScore": 2.7 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "SINGLE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE", "baseScore": 3.5 }, "baseSeverity": "LOW", "exploitabilityScore": 6.8, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-79" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.02.9", "matchCriteriaId": "28989732-6761-4356-A4CF-BE172E72C41B" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*", "matchCriteriaId": "84FA6C86-7C8A-4CF5-9065-CDECDFF65F7E" } ] } ] }, { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*", "versionEndIncluding": "1.02.9", "matchCriteriaId": "9AC22BBF-F3CF-4B47-B314-BA3DA9A4663D" } ] }, { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": false, "criteria": "cpe:2.3:h:elecom:wrh-733gwh:-:*:*:*:*:*:*:*", "matchCriteriaId": "08BFC900-6728-4EDB-8CC9-27101DF47FC9" } ] } ] } ], "references": [ { "url": "https://jvn.jp/en/jp/JVN88993473/index.html", "source": "vultures@jpcert.or.jp", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.elecom.co.jp/news/security/20211130-01/", "source": "vultures@jpcert.or.jp", "tags": [ "Vendor Advisory" ] } ] }