fkie_cve-2020-3509
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 DHCP message handler of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the supervisor to crash, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient error handling when DHCP version 4 (DHCPv4) messages are parsed. An attacker could exploit this vulnerability by sending a malicious DHCPv4 message to or through a WAN interface of an affected device. A successful exploit could allow the attacker to cause a reload of the affected device. Note: On Cisco cBR-8 Converged Broadband Routers, all of the following are considered WAN interfaces: 10 Gbps Ethernet interfaces 100 Gbps Ethernet interfaces Port channel interfaces that include multiple 10 and/or 100 Gbps Ethernet interfaces
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-dhcp-dos-JSCKX43hVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-dhcp-dos-JSCKX43hVendor Advisory
Impacted products
Vendor Product Version
cisco ios_xe 16.7\(1\)
cisco cbr-8 -


To clipboard 

{
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    {
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      "value": "A vulnerability in the DHCP message handler of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the supervisor to crash, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient error handling when DHCP version 4 (DHCPv4) messages are parsed. An attacker could exploit this vulnerability by sending a malicious DHCPv4 message to or through a WAN interface of an affected device. A successful exploit could allow the attacker to cause a reload of the affected device. Note: On Cisco cBR-8 Converged Broadband Routers, all of the following are considered WAN interfaces: 10 Gbps Ethernet interfaces 100 Gbps Ethernet interfaces Port channel interfaces that include multiple 10 and/or 100 Gbps Ethernet interfaces"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el manejador de mensajes DHCP de Cisco IOS XE Software para Cisco cBR-8 Converged Broadband Routers, podr\u00eda permitir a un atacante remoto no autenticado causar que el supervisor se bloquee, lo que podr\u00eda resultar en una condici\u00f3n de denegaci\u00f3n de servicio (DoS).\u0026#xa0;La vulnerabilidad es debido a un manejo insuficiente de errores cuando son analizados los mensajes de DHCP versi\u00f3n 4 (DHCPv4).\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un mensaje DHCPv4 malicioso o mediante una interfaz WAN de un dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar una recarga del dispositivo afectado.\u0026#xa0;Nota: En Cisco cBR-8 Converged Broadband Routers, todos los siguientes son considerados interfaces WAN: Interfaces Ethernet de 10 Gbps, Interfaces Ethernet de 100 Gbps Interfaces de canal de puerto que incluyen m\u00faltiples interfaces Ethernet de 10 y/o 100 Gbps."
    }
  ],
  "id": "CVE-2020-3509",
  "lastModified": "2024-11-21T05:31:13.133",
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        "baseSeverity": "HIGH",
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          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
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        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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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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  "published": "2020-09-24T18:15:21.073",
  "references": [
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      "source": "psirt@cisco.com",
      "tags": [
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      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-dhcp-dos-JSCKX43h"
    },
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  "vulnStatus": "Modified",
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          "value": "CWE-203"
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}


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