{
  "id": "CVE-2020-28242",
  "sourceIdentifier": "cve@mitre.org",
  "published": "2020-11-06T06:15:11.930",
  "lastModified": "2022-06-05T03:11:42.413",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en Asterisk Open Source versiones 13.x anteriores a 13.37.1, versiones 16.x  anteriores a 16.14.1, versiones 17.x  anteriores a 17.8.1 y versiones 18.x anteriores a 18.0.1 y Certified Asterisk versiones anteriores a 16.8-cert5. Si Asterisk es desafiado en un INVITE saliente y el nonce es cambiado en cada respuesta, Asterisk enviar\u00e1 los INVITE continuamente en un bucle. Esto causa que Asterisk consuma m\u00e1s y m\u00e1s memoria ya que la transacci\u00f3n nunca terminar\u00e1 (incluso si la llamada se cuelga), lo que a la larga conllevar\u00e1 a un reinicio o cierre de Asterisk. Para que esto ocurra, la autenticaci\u00f3n saliente debe ser configurada en el endpoint"
    }
  ],
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        "type": "Primary",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM"
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        "exploitabilityScore": 2.8,
        "impactScore": 3.6
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          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0
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        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
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      "url": "http://downloads.asterisk.org/pub/security/AST-2020-002.html",
      "source": "cve@mitre.org",
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