« Volver al listado

CVE-2019-1687

Estado: ModificadaAlta (7.5)—

A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error in TCP-based packet inspection, which could cause the TCP packet to have an invalid Layer 2 (L2)-formatted header. An attacker could exploit this vulnerability by sending a crafted TCP packet sequence to the targeted device. A successful exploit could allow the attacker to cause a DoS condition.

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).

Tecnologías afectadas (2)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2019-1687",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2019-1687",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-21T18:59:03.755893Z"
        }
      }
    ],
    "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": 6.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 2.2
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco Adaptive Security Appliance (ASA) Software",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "9.4.4.34",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "9.8.4",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "9.9.2.50",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-05-03T15:29:00.837",
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/108176",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftdtcp-dos",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/108176",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftdtcp-dos",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error in TCP-based packet inspection, which could cause the TCP packet to have an invalid Layer 2 (L2)-formatted header. An attacker could exploit this vulnerability by sending a crafted TCP packet sequence to the targeted device. A successful exploit could allow the attacker to cause a DoS condition."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la funcionalidad de proxy TCP para el software Adaptive Security Appliance (ASA) de Cisco  y el software Firepower Threat Defense (FTD) de Cisco, podría permitir que un atacante remoto no identificado cause que el dispositivo se reinicie  inesperadamente, dando como resultado  una condición de Denegación de Servicio (DoS) . La vulnerabilidad es debido a un error en la inspección de paquetes basados en TCP, lo que podría causar que el paquete TCP tenga un encabezado formateado de capa 2 (L2) no válido. Un atacante podría aprovechar esta vulnerabilidad enviando una secuencia de paquetes TCP creada hacia el dispositivo de destino. Una operación con éxito podría permitir al atacante causar una condición DoS."
    }
  ],
  "lastModified": "2026-08-11T19:33:44.513",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "79F0345E-5661-4119-8620-8A1F42E97128",
              "versionEndExcluding": "9.4.4.34"
            },
            {
              "criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7789E32-76B1-4D16-A556-B6B5A8CDB5A0",
              "versionEndExcluding": "9.6.4.25",
              "versionStartIncluding": "9.5"
            },
            {
              "criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C812C8D5-3159-434C-8B9F-8CB0A8767923",
              "versionEndExcluding": "9.8.4",
              "versionStartIncluding": "9.7"
            },
            {
              "criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ABCD2AF8-97D4-45C6-B80E-D5FA9B719BD5",
              "versionEndExcluding": "9.9.2.50",
              "versionStartIncluding": "9.9"
            },
            {
              "criteria": "cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B4C6B343-2D4D-4C7E-A59E-629773DD2E60",
              "versionEndExcluding": "9.10.1.17",
              "versionStartIncluding": "9.10"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "8E6A8BB7-2000-4CA2-9DD7-89573CE4C73A"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B091B9BA-D4CA-435B-8D66-602B45F0E0BD"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "08F0F160-DAD2-48D4-B7B2-4818B2526F35"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "977D597B-F6DE-4438-AB02-06BE64D71EBE"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "2B387F62-6341-434D-903F-9B72E7F84ECB"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "EB71EB29-0115-4307-A9F7-262394FD9FB0"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "17C5A524-E1D9-480F-B655-0680AA5BF720"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "57179F60-E330-4FF0-9664-B1E4637FF210"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "E6287D95-F564-44B7-A0F9-91396D7C2C4E"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "5535C936-391B-4619-AA03-B35265FC15D7"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "D1E828B8-5ECC-4A09-B2AD-DEDC558713DE"
            },
            {
              "criteria": "cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "16AE20C2-C77E-4E04-BF13-A48696E52426"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AE33C558-5AB3-4B92-86A3-29929E5C9E73",
              "versionEndExcluding": "6.2.3.12",
              "versionStartIncluding": "6.0.0"
            },
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B94C0032-3A17-4993-A3AF-BBFF3B96266A",
              "versionEndExcluding": "6.3.0.3",
              "versionStartIncluding": "6.3.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}