fkie_cve-2020-3511
Vulnerability from fkie_nvd
Published
2020-09-24 18:15
Modified
2024-11-21 05:31
Severity ?
7.4 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Summary
A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTfVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTfVendor Advisory
Impacted products
Vendor Product Version
cisco ios_xe 15.1\(4\)m
cisco 1100-4g_integrated_services_router -
cisco 1100-4gltegb_integrated_services_router -
cisco 1100-4gltena_integrated_services_router -
cisco 1100-4p_integrated_services_router -
cisco 1100-6g_integrated_services_router -
cisco 1100-8p_integrated_services_router -
cisco 1100-lte_integrated_services_router -
cisco 1100_integrated_services_router -
cisco 1101-4p_integrated_services_router -
cisco 1101_integrated_services_router -
cisco 1109-2p_integrated_services_router -
cisco 1109-4p_integrated_services_router -
cisco 1109_integrated_services_router -
cisco 1111x-8p_integrated_services_router -
cisco 1111x_integrated_services_router -
cisco 111x_integrated_services_router -
cisco 1120_integrated_services_router -
cisco 1160_integrated_services_router -
cisco 422_integrated_services_router -
cisco 4321\/k9-rf_integrated_services_router -
cisco 4321\/k9-ws_integrated_services_router -
cisco 4321\/k9_integrated_services_router -
cisco 4331\/k9-rf_integrated_services_router -
cisco 4331\/k9-ws_integrated_services_router -
cisco 4331\/k9_integrated_services_router -
cisco 4351\/k9-rf_integrated_services_router -
cisco 4351\/k9-ws_integrated_services_router -
cisco 4351\/k9_integrated_services_router -
cisco 4431_integrated_services_router -
cisco 4461_integrated_services_router -
cisco asr_1000-x -
cisco asr_1001 -
cisco asr_1001-x -
cisco asr_1002 -
cisco asr_1002-x -
cisco asr_1004 -
cisco asr_1006 -
cisco asr_1013 -
cisco asr1001-hx -
cisco asr1001-hx-rf -
cisco asr1001-x -
cisco asr1001-x-rf -
cisco asr1001-x-ws -
cisco asr1002-hx -
cisco asr1002-hx-rf -
cisco asr1002-hx-ws -
cisco asr1002-x -
cisco asr1002-x-rf -
cisco asr1002-x-ws -
cisco csr1000v -


To clipboard 

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          "negate": false,
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el subsistema ISDN de Cisco IOS Software y Cisco IOS XE Software, podr\u00eda permitir a un atacante adyacente no autenticado causar una recarga de un dispositivo afectado, resultando en una condici\u00f3n de denegaci\u00f3n de servicio (DoS).\u0026#xa0;La vulnerabilidad es debido a una comprobaci\u00f3n insuficiente de la entrada cuando son procesados los mensajes ISDN Q.931.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un mensaje ISDN Q.931 malicioso hacia un dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar que el proceso se bloquee, resultando en una recarga del dispositivo afectado."
    }
  ],
  "id": "CVE-2020-3511",
  "lastModified": "2024-11-21T05:31:13.380",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 6.5,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
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    "cvssMetricV30": [
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        "cvssData": {
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          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.0"
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        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
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    "cvssMetricV31": [
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        "cvssData": {
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          "attackVector": "ADJACENT_NETWORK",
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          "confidentialityImpact": "NONE",
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          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
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  },
  "published": "2020-09-24T18:15:21.230",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
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}


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