nvd-json-data-feeds/CVE-2024/CVE-2024-204xx/CVE-2024-20406.json

{
  "id": "CVE-2024-20406",
  "sourceIdentifier": "psirt@cisco.com",
  "published": "2024-09-11T17:15:13.040",
  "lastModified": "2024-10-07T17:56:43.103",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the segment routing feature for the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending specific IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process on all affected devices that are participating in the Flexible Algorithm to crash and restart, resulting in a DoS condition.\r\nNote: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. This vulnerability affects segment routing for IS-IS over IPv4 and IPv6 control planes as well as devices that are configured as level 1, level 2, or multi-level routing IS-IS type."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funci\u00f3n de enrutamiento de segmentos para el protocolo de sistema intermedio a sistema intermedio (IS-IS) del software Cisco IOS XR podr\u00eda permitir que un atacante adyacente no autenticado provoque una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una validaci\u00f3n de entrada insuficiente de los paquetes IS-IS de entrada. Un atacante podr\u00eda aprovechar esta vulnerabilidad enviando paquetes IS-IS espec\u00edficos a un dispositivo afectado despu\u00e9s de formar una adyacencia. Una explotaci\u00f3n exitosa podr\u00eda permitir que el atacante provoque que el proceso IS-IS en todos los dispositivos afectados que participan en el algoritmo flexible se bloquee y se reinicie, lo que da como resultado una condici\u00f3n de DoS. Nota: El protocolo IS-IS es un protocolo de enrutamiento. Para aprovechar esta vulnerabilidad, un atacante debe estar adyacente a la capa 2 del dispositivo afectado y debe haber formado una adyacencia. Esta vulnerabilidad afecta al enrutamiento de segmentos para IS-IS sobre planos de control IPv4 e IPv6, as\u00ed como a dispositivos que est\u00e1n configurados como tipo IS-IS de enrutamiento de nivel 1, nivel 2 o multinivel."
    }
  ],
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        "type": "Secondary",
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0
      },
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        "type": "Primary",
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          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0
      }
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    {
      "source": "psirt@cisco.com",
      "type": "Secondary",
      "description": [
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          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
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      "description": [
        {
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          "value": "NVD-CWE-noinfo"
        }
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  ],
  "configurations": [
    {
      "nodes": [
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          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-xehpbVNe",
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
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    }
  ]
}