Show plain JSON{"id": "CVE-2002-0518", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "published": "2002-08-12T04:00:00.000", "references": [{"url": "ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:20.syncache.asc", "source": "cve@mitre.org"}, {"url": "http://www.iss.net/security_center/static/8873.php", "source": "cve@mitre.org"}, {"url": "http://www.iss.net/security_center/static/8875.php", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.osvdb.org/6046", "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/4524", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:20.syncache.asc", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.iss.net/security_center/static/8873.php", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.iss.net/security_center/static/8875.php", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.osvdb.org/6046", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.securityfocus.com/bid/4524", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart."}, {"lang": "es", "value": "Los mecanismos SYN cache (syncache) y SYN cookie (syncookie) en FreeBSD 4.5 y anteriores, permite a atacantes remotos provocar la Denegaci\u00f3n de Servicios (por caida) por algunos de los siguiente m\u00e9todos:\r\n\r\n mediante un paquete SYN aceptado utilizando syncookies, que provoca que las opciones TCP del conector (socket) referencien a un puntero nulo.\r\n eliminando y reiniciando un proceso que espera en el mismo conector (socket) que no elimin\u00f3 adecuadamente el contenido anterior del puntero inpcb en el reinicio."}], "lastModified": "2025-04-03T01:03:51.193", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:freebsd:freebsd:4.5:release:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3D41CB12-7894-4D25-80EC-23C56171D973"}, {"criteria": "cpe:2.3:o:freebsd:freebsd:4.5:stable:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09789843-6A1A-4CDB-97E8-89E82B79DDB5"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"} 