« Volver al listado

CVE-2019-1703

Estado: ModificadaAlta (8.6)—

A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for the Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error, which may prevent ingress buffers from being replenished under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device.

Leer descripción completaMostrar menos

A successful exploit could allow the attacker to consume all input buffers, which are shared between all interfaces, leading to a queue wedge condition in all active interfaces. This situation would cause an affected device to stop processing any incoming traffic and result in a DoS condition until the device is reloaded manually.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic

Tecnologías afectadas (1)

Cisco — Secure Firewall Threat Defense

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2019-1703",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2019-1703",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-19T17:24:26.054970Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.0",
          "baseScore": 8.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco Firepower Threat Defense Software",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "6.2.3.12",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-03T16:29:00.430",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/108170",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-dos",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/108170",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-dos",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for the Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error, which may prevent ingress buffers from being replenished under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to consume all input buffers, which are shared between all interfaces, leading to a queue wedge condition in all active interfaces. This situation would cause an affected device to stop processing any incoming traffic and result in a DoS condition until the device is reloaded manually."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funcionalidad interna de procesamiento de paquetes (packet-processing) del software Firepower Threat Defense (FTD) de Cisco para Firepower 2100 Series de Cisco, podría permitir que un atacante remoto no identificado cause que un dispositivo afectado detenga el procesamiento del tráfico, resultando una  condición de Denegación de Servicio (DoS). La vulnerabilidad es debido a un error lógico, que puede evitar que los buffers de ingreso se repongan bajo condiciones de tráfico específicas. Un atacante podría aprovechar esta vulnerabilidad enviando una serie de paquetes creados a un dispositivo afectado. Una operación éxito  podría permitir al atacante consumir todos los buffers de entrada, que se comparten entre todas las interfaces, lo que deriva a una condición de cola de segmentos en todas las interfaces activas. Esta situación causaría que un dispositivo afectado detenga el procesamiento del tráfico entrante y conlleva a una condición DoS hasta que el dispositivo vuelva a cargarse manualmente."
    }
  ],
  "lastModified": "2026-08-11T19:33:44.513",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "457AB9D1-FD88-4EF5-A675-363A5029AEAD",
              "versionEndExcluding": "6.2.3.12",
              "versionStartIncluding": "6.2.1"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "52D96810-5F79-4A83-B8CA-D015790FCF72"
            },
            {
              "criteria": "cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "16FE2945-4975-4003-AE48-7E134E167A7F"
            },
            {
              "criteria": "cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "DCE7122A-5AA7-4ECD-B024-E27C9D0CFB7B"
            },
            {
              "criteria": "cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "976901BF-C52C-4F81-956A-711AF8A60140"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}