{
  "id": "CVE-2021-31376",
  "sourceIdentifier": "sirt@juniper.net",
  "published": "2021-10-19T19:15:10.840",
  "lastModified": "2021-10-25T16:20:45.673",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "An Improper Input Validation vulnerability in Packet Forwarding Engine manager (FXPC) process of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending specific DHCPv6 packets to the device and crashing the FXPC service. Continued receipt and processing of this specific packet will create a sustained Denial of Service (DoS) condition. This issue affects only the following platforms in ACX Series: ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096 devices. Other ACX platforms are not affected from this issue. This issue affects Juniper Networks Junos OS on ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096: 18.4 version 18.4R3-S7 and later versions prior to 18.4R3-S8. This issue does not affect: Juniper Networks Junos OS 18.4 versions prior to 18.4R3-S7 on ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de comprobaci\u00f3n de entrada inapropiada en el proceso del Administrador del Motor de Reenv\u00edo de Paquetes (FXPC) de Juniper Networks Junos OS permite a un atacante causar una Denegaci\u00f3n de Servicio (DoS) mediante el env\u00edo de paquetes DHCPv6 espec\u00edficos al dispositivo y el bloqueo del servicio FXPC. La recepci\u00f3n y el procesamiento continuados de este paquete espec\u00edfico crear\u00e1n una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema afecta s\u00f3lo a las siguientes plataformas de la serie ACX: ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096. Otras plataformas ACX no est\u00e1n afectadas por este problema. Este problema afecta a Juniper Networks Junos OS en ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096: versi\u00f3n 18.4 18.4R3-S7 y versiones posteriores anteriores a 18.4R3-S8. Este problema no afecta: Juniper Networks Junos OS versiones 18.4 anteriores a 18.4R3-S7 en ACX500, ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX5048, ACX5096"
    }
  ],
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          "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"
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6
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          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "baseScore": 5.0
        },
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        "exploitabilityScore": 10.0,
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        "acInsufInfo": false,
        "obtainAllPrivilege": false,
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  "references": [
    {
      "url": "https://kb.juniper.net/JSA11241",
      "source": "sirt@juniper.net",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}