nvd-json-data-feeds/CVE-2023/CVE-2023-497xx/CVE-2023-49786.json

{
  "id": "CVE-2023-49786",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-12-14T20:15:52.927",
  "lastModified": "2023-12-15T16:15:45.467",
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix, which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6."
    },
    {
      "lang": "es",
      "value": "Asterisk es un conjunto de herramientas de telefon\u00eda y centralita privada de c\u00f3digo abierto. En Asterisk anteriores a las versiones 18.20.1, 20.5.1 y 21.0.1; as\u00ed como certificado-asterisco anterior a 18.9-cert6; Asterisk es susceptible a un DoS debido a una condici\u00f3n de ejecuci\u00f3n en la fase \"hello handshake\" del protocolo DTLS cuando maneja DTLS-SRTP para la configuraci\u00f3n de medios. Este ataque se puede realizar de forma continua, negando as\u00ed nuevas llamadas cifradas DTLS-SRTP durante el ataque. El abuso de esta vulnerabilidad puede provocar una denegaci\u00f3n de servicio masiva en servidores Asterisk vulnerables para llamadas que dependen de DTLS-SRTP. El commit d7d7764cb07c8a1872804321302ef93bf62cba05 contiene una soluci\u00f3n, que forma parte de las versiones 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-703"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html",
      "source": "security-advisories@github.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2023/12/15/7",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-race",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pq",
      "source": "security-advisories@github.com"
    }
  ]
}