{
  "id": "CVE-2021-1379",
  "sourceIdentifier": "ykramarz@cisco.com",
  "published": "2024-11-18T16:15:09.310",
  "lastModified": "2024-11-18T17:11:17.393",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) implementations for Cisco IP Phone Series 68xx/78xx/88xx could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP phone.\r\nThese vulnerabilities are due to missing checks when the IP phone processes a Cisco Discovery Protocol or LLDP packet. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted IP phone. A successful exploit could allow the attacker to execute code on the affected IP phone or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities."
    },
    {
      "lang": "es",
      "value": "Varias vulnerabilidades en las implementaciones de Cisco Discovery Protocol y Link Layer Discovery Protocol (LLDP) para los tel\u00e9fonos IP de Cisco de las series 68xx/78xx/88xx podr\u00edan permitir que un atacante adyacente no autenticado ejecute c\u00f3digo de forma remota o provoque una recarga de un tel\u00e9fono IP afectado. Estas vulnerabilidades se deben a la falta de comprobaciones cuando el tel\u00e9fono IP procesa un paquete Cisco Discovery Protocol o LLDP. Un atacante podr\u00eda explotar estas vulnerabilidades enviando un paquete Cisco Discovery Protocol o LLDP malicioso al tel\u00e9fono IP de destino. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante ejecutar c\u00f3digo en el tel\u00e9fono IP afectado o hacer que se recargue inesperadamente, lo que resultar\u00eda en una condici\u00f3n de denegaci\u00f3n de servicio (DoS). Nota: Cisco Discovery Protocol es un protocolo de capa 2. Para explotar estas vulnerabilidades, un atacante debe estar en el mismo dominio de difusi\u00f3n que el dispositivo afectado (adyacente a la capa 2). Cisco ha publicado actualizaciones de software que solucionan estas vulnerabilidades. No existen workarounds que solucionen estas vulnerabilidades."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "ykramarz@cisco.com",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "ykramarz@cisco.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-rce-dos-U2PsSkz3",
      "source": "ykramarz@cisco.com"
    },
    {
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-distupd-N87eB6Z3",
      "source": "ykramarz@cisco.com"
    }
  ]
}