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This is persistent (even after disabling the recovery option, the exploit will fail) because the router will ask for the security questions."}, {"lang": "es", "value": "Se ha descubierto un problema en dispositivos NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900 y R8000. Son propensos a revelar la contrase\u00f1a a trav\u00e9s de peticiones simples manipuladas al servidor de gesti\u00f3n de la web. El error es explotable remotamente si la opci\u00f3n de gesti\u00f3n remota est\u00e1 activada, y tambi\u00e9n puede ser explotado dado el acceso al router a trav\u00e9s de LAN o WLAN. Cuando se trata de acceder al panel web, se pide al usuario que se autentique; si la autenticaci\u00f3n se cancela y la recuperaci\u00f3n de contrase\u00f1a no est\u00e1 habilitada, el usuario es redirigido a una p\u00e1gina que revela un token de recuperaci\u00f3n de contrase\u00f1a. Si un usuario proporciona el token correcto a la p\u00e1gina /passwordrecovered.cgi?id=TOKEN (y la recuperaci\u00f3n de contrase\u00f1a no est\u00e1 habilitada), recibir\u00e1n la contrase\u00f1a de administrador para el router. Si la recuperaci\u00f3n de contrase\u00f1a est\u00e1 habilitada, la explotaci\u00f3n fallar\u00e1, ya que pedir\u00e1 al usuario preguntas para la recuperaci\u00f3n que fueron previamente establecidas cuando se habilit\u00f3 esa caracter\u00edstica. Esto es persistente (incluso tras la inhabilitaci\u00f3n de la opci\u00f3n de recuperaci\u00f3n, la explotaci\u00f3n fallar\u00e1) porque el router preguntar\u00e1 por las preguntas de seguridad."}], "id": "CVE-2017-5521", "lastModified": "2025-10-22T00:16:06.633", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2017-01-17T09:59:00.333", "references": [{"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/95457"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/41205/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/95457"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://www.exploit-db.com/exploits/41205/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-5521"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}