CVE-2011-2665

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channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character."}, {"lang": "es", "value": "reqresp_parser.c en el controlador de canal SIP en Asterisk Open Source v1.8.x anteriores a v1.8.4.3 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (desreferencia a puntero NULL y ca\u00edda del demonio) a trav\u00e9s de un paquete SIP con una cabecera Contact que carece de un car\u00e1cter < (menos que)."}], "evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\r\n'CWE-476: NULL Pointer Dereference'", "id": "CVE-2011-2665", "lastModified": "2026-06-16T23:31:45.360", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2011-07-06T19:55:03.590", "references": [{"source": "cve@mitre.org", "tags": ["Patch"], "url": "http://downloads.asterisk.org/pub/security/AST-2011-009-1.8.diff"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://downloads.asterisk.org/pub/security/AST-2011-009.html"}, {"source": "cve@mitre.org", "url": "http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/45048"}, {"source": "cve@mitre.org", "url": "http://secunia.com/advisories/45201"}, {"source": "cve@mitre.org", "url": 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"sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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