fkie_cve-2020-3510
Vulnerability from fkie_nvd
Published
2020-09-24 18:15
Modified
2024-11-21 05:31
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Summary
A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient error handling when parsing DNS requests. An attacker could exploit this vulnerability by sending a series of malicious DNS requests to an Umbrella Connector client interface of an affected device. A successful exploit could allow the attacker to cause a crash of the iosd process, which triggers a reload of the affected device.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-umbrella-dos-t2QMUX37Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-umbrella-dos-t2QMUX37Vendor Advisory
Impacted products
Vendor Product Version
cisco ios_xe 16.12.1
cisco ios_xe 16.12.2
cisco ios_xe 17.1.1
cisco catalyst_c9200-24p -
cisco catalyst_c9200-24t -
cisco catalyst_c9200-48p -
cisco catalyst_c9200-48t -
cisco catalyst_c9200l-24p-4g -
cisco catalyst_c9200l-24p-4x -
cisco catalyst_c9200l-24pxg-2y -
cisco catalyst_c9200l-24pxg-4x -
cisco catalyst_c9200l-24t-4g -
cisco catalyst_c9200l-24t-4x -
cisco catalyst_c9200l-48p-4g -
cisco catalyst_c9200l-48p-4x -
cisco catalyst_c9200l-48pxg-2y -
cisco catalyst_c9200l-48pxg-4x -
cisco catalyst_c9200l-48t-4g -
cisco catalyst_c9200l-48t-4x -
cisco catalyst_c9300-24p -
cisco catalyst_c9300-24s -
cisco catalyst_c9300-24t -
cisco catalyst_c9300-24u -
cisco catalyst_c9300-24ux -
cisco catalyst_c9300-48p -
cisco catalyst_c9300-48s -
cisco catalyst_c9300-48t -
cisco catalyst_c9300-48u -
cisco catalyst_c9300-48un -
cisco catalyst_c9300-48uxm -
cisco catalyst_c9300l-24p-4g -
cisco catalyst_c9300l-24p-4x -
cisco catalyst_c9300l-24t-4g -
cisco catalyst_c9300l-24t-4x -
cisco catalyst_c9300l-48p-4g -
cisco catalyst_c9300l-48p-4x -
cisco catalyst_c9300l-48t-4g -
cisco catalyst_c9300l-48t-4x -
cisco catalyst_c9404r -
cisco catalyst_c9407r -
cisco catalyst_c9410r -
cisco catalyst_c9500-12q -
cisco catalyst_c9500-16x -
cisco catalyst_c9500-24q -
cisco catalyst_c9500-24y4c -
cisco catalyst_c9500-32c -
cisco catalyst_c9500-32qc -
cisco catalyst_c9500-40x -
cisco catalyst_c9500-48y4c -
cisco catalyst_c9600-lc-24c -
cisco catalyst_c9600-lc-48s -
cisco catalyst_c9600-lc-48tx -
cisco catalyst_c9600-lc-48yl -


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Umbrella Connector component of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches could allow an unauthenticated, remote attacker to trigger a reload, resulting in a denial of service condition on an affected device. The vulnerability is due to insufficient error handling when parsing DNS requests. An attacker could exploit this vulnerability by sending a series of malicious DNS requests to an Umbrella Connector client interface of an affected device. A successful exploit could allow the attacker to cause a crash of the iosd process, which triggers a reload of the affected device."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el componente Umbrella Connector de Cisco IOS XE Software para Cisco Catalyst 9200 Series Switches, podr\u00eda permitir a un atacante remoto no autenticado desencadenar una recarga, resultando en una condici\u00f3n de denegaci\u00f3n de servicio en un dispositivo afectado.\u0026#xa0;La vulnerabilidad es debido a un manejo insuficiente de errores cuando se analizan las peticiones DNS.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de una serie de peticiones DNS maliciosas a una interfaz del cliente de Umbrella Connector de un dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar un bloqueo del proceso iosd, lo que desencadena una recarga del dispositivo afectado."
    }
  ],
  "id": "CVE-2020-3510",
  "lastModified": "2024-11-21T05:31:13.250",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
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        "exploitabilityScore": 8.6,
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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        "source": "nvd@nist.gov",
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  },
  "published": "2020-09-24T18:15:21.150",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
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      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-umbrella-dos-t2QMUX37"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-umbrella-dos-t2QMUX37"
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  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-388"
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      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "nvd@nist.gov",
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}


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