CVE-2019-18790

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A SIP request can be sent to Asterisk that can change a SIP peer's IP address. A REGISTER does not need to occur, and calls can be hijacked as a result. The only thing that needs to be known is the peer's name; authentication details such as passwords do not need to be known. This vulnerability is only exploitable when the nat option is set to the default, or auto_force_rport."}, {"lang": "es", "value": "Se ha descubierto un problema en channels/chan_sip.c en Sangoma Asterisk 13.x antes de 13.29.2, 16.x antes de 16.6.2, y 17.x antes de 17.0.1, y Certified Asterisk 13.21 antes de cert5. Una solicitud SIP puede ser enviada a Asterisk que puede cambiar la direcci\u00f3n IP de un peer SIP. Un REGISTRO no necesita ocurrir, y las llamadas pueden ser secuestradas como resultado. Lo \u00fanico que se necesita conocer es el nombre del peer; los detalles de autenticaci\u00f3n como las contrase\u00f1as no necesitan ser conocidos. Esta vulnerabilidad s\u00f3lo es explotable cuando la opci\u00f3n nat est\u00e1 configurada por defecto, o auto_force_rport"}], "id": "CVE-2019-18790", "lastModified": "2026-06-17T02:25:20.280", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-11-22T17:15:11.740", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "http://downloads.asterisk.org/pub/security/AST-2019-006.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.asterisk.org/downloads/security-advisories"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://downloads.asterisk.org/pub/security/AST-2019-006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00038.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.asterisk.org/downloads/security-advisories"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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