FKIE_CVE-2020-3562

Vulnerability from fkie_nvd - Published: 2020-10-21 19:15 - Updated: 2026-08-11 19:33
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 SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yyVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yyVendor Advisory
Impacted products
Vendor Product Version
cisco secure_firewall_threat_defense 6.3.0
cisco secure_firewall_threat_defense 6.4.0
cisco secure_firewall_threat_defense 6.5.0
cisco firepower_2110 -
cisco firepower_2120 -
cisco firepower_2130 -
cisco firepower_2140 -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
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              "vulnerable": true
            },
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          "operator": "OR"
        },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la inspecci\u00f3n SSL/TLS de Cisco Firepower Threat Defense (FTD) Software para los firewalls Cisco Firepower Serie 2100 podr\u00eda permitir a un atacante remoto no autenticado causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en un dispositivo afectado.\u0026#xa0;La vulnerabilidad es debido a una comprobaci\u00f3n de entrada inapropiada para determinados campos de mensajes SSL/TLS espec\u00edficos.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un mensaje SSL/TLS malformado por medio de un dispositivo afectado.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir a un atacante causar que el dispositivo afectado se recargue, resultando en una condici\u00f3n de DoS.\u0026#xa0;No es requerida una intervenci\u00f3n manual para recuperar el dispositivo despu\u00e9s de que se haya recargado"
    }
  ],
  "id": "CVE-2020-3562",
  "lastModified": "2026-08-11T19:33:44.513",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "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",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    ],
    "cvssMetricV30": [
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          "attackVector": "NETWORK",
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          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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        },
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        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 4.0,
        "source": "nvd@nist.gov",
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    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-3562",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-13T17:12:11.514493Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2020-10-21T19:15:17.887",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-dcrpt-dos-RYEkX4yy"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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        {
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          "value": "CWE-119"
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      "type": "Secondary"
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          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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