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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*", "matchCriteriaId": "D602178F-BD2F-4B3D-97D9-7555182A7015", "versionEndExcluding": "1.10.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.11, when handling DTLS-SRTP for media setup, FreeSWITCH is susceptible to Denial of Service due to a race condition in the hello handshake phase of the DTLS protocol. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. 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Antes de la versi\u00f3n 1.10.11, cuando se maneja DTLS-SRTP para la configuraci\u00f3n de medios, FreeSWITCH es susceptible a una denegaci\u00f3n de servicio debido a una condici\u00f3n de ejecuci\u00f3n en la fase de handshake del protocolo DTLS. Este ataque se puede realizar de forma continua, negando as\u00ed nuevas llamadas cifradas DTLS-SRTP durante el ataque. Si un atacante logra enviar un mensaje DTLS ClientHello con un CipherSuite no v\u00e1lido (como `TLS_NULL_WITH_NULL_NULL`) al puerto en el servidor FreeSWITCH que espera paquetes de la persona que llama, se genera un error DTLS. Esto da como resultado la cancelaci\u00f3n de la sesi\u00f3n de medios, a la que sigue tambi\u00e9n la cancelaci\u00f3n a nivel de se\u00f1alizaci\u00f3n (SIP). El abuso de esta vulnerabilidad puede provocar una denegaci\u00f3n de servicio masiva en servidores FreeSWITCH vulnerables para llamadas que dependen de DTLS-SRTP. Para abordar esta vulnerabilidad, actualice FreeSWITCH a 1.10.11, que incluye la soluci\u00f3n de seguridad. La soluci\u00f3n implementada es descartar todos los paquetes de direcciones que no hayan sido validadas por una verificaci\u00f3n ICE."}], "id": "CVE-2023-51443", "lastModified": "2024-11-21T08:38:07.743", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}]}, "published": "2023-12-27T17:15:08.093", "references": [{"source": "[email protected]", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/176393/FreeSWITCH-Denial-Of-Service.html"}, {"source": "[email protected]", "tags": ["Patch"], "url": "https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11"}, {"source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/176393/FreeSWITCH-Denial-Of-Service.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-703"}], "source": "[email protected]", "type": "Secondary"}]}

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