FKIE_CVE-2018-15458

Vulnerability from fkie_nvd - Published: 2019-01-10 19:29 - Updated: 2026-06-17 01:42
Severity
5.3 (Medium) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability in the Shell Access Filter feature of Cisco Firepower Management Center (FMC), when used in conjunction with remote authentication, could allow an unauthenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability occurs because the configuration of the Shell Access Filter, when used with a specific type of remote authentication, can cause a system file to have unbounded writes. An attacker could exploit this vulnerability by sending a steady stream of remote authentication requests to the appliance when the specific configuration is applied. Successful exploitation could allow the attacker to increase the size of a system log file so that it consumes most of the disk space. The lack of available disk space could lead to a DoS condition in which the device functions could operate abnormally, making the device unstable.
References
psirt@cisco.comhttp://www.securityfocus.com/bid/106516Third Party Advisory, VDB Entry
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-fpwr-mc-dosVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106516Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-fpwr-mc-dosVendor Advisory
Impacted products
Vendor Product Version
cisco secure_firewall_management_center 6.2.2
cisco secure_firewall_management_center 6.2.3
cisco secure_firewall_management_center 6.3.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Cisco Firepower Management Center",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_management_center:6.2.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "3B5233F7-5743-467C-9C59-F5C51B47184A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_management_center:6.2.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "6175407A-207E-4844-B150-EA0129C4CBBD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cisco:secure_firewall_management_center:6.3.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "134B9AFF-6FFF-4082-80CB-AD2ACBF832F9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Shell Access Filter feature of Cisco Firepower Management Center (FMC), when used in conjunction with remote authentication, could allow an unauthenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability occurs because the configuration of the Shell Access Filter, when used with a specific type of remote authentication, can cause a system file to have unbounded writes. An attacker could exploit this vulnerability by sending a steady stream of remote authentication requests to the appliance when the specific configuration is applied. Successful exploitation could allow the attacker to increase the size of a system log file so that it consumes most of the disk space. The lack of available disk space could lead to a DoS condition in which the device functions could operate abnormally, making the device unstable."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la caracter\u00edstica de filtrado de acceso shell de Cisco Firepower Management Center (FMC), al emplearse junto con autenticaci\u00f3n remota, podr\u00eda permitir que un atacante remoto no autenticado provoque un gran uso del disco, lo que resulta en una condici\u00f3n de denegaci\u00f3n de servicio (DoS). La vulnerabilidad ocurre debido a que la configuraci\u00f3n del acceso shell, al emplearse con un tipo espec\u00edfico de autenticaci\u00f3n remota, puede provocar que un archivo del sistema tenga escrituras no limitadas. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un flujo constante de peticiones de autenticaci\u00f3n remota al aparato cuando se aplica la configuraci\u00f3n espec\u00edfica. La explotaci\u00f3n con \u00e9xito podr\u00eda permitir que el atacante aumente el tama\u00f1o de un archivo de log del sistema para que consuma casi todo el espacio del disco. La falta de espacio disponible en el disco podr\u00eda desembocar en una condici\u00f3n de denegaci\u00f3n de servicio (DoS) en la que las funciones del aparato podr\u00edan operar de forma err\u00f3nea, haciendo que el dispositivo sea inestable."
    }
  ],
  "id": "CVE-2018-15458",
  "lastModified": "2026-06-17T01:42:32.813",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2018-15458",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-19T17:25:41.191548Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2019-01-10T19:29:00.517",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106516"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-fpwr-mc-dos"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106516"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190109-fpwr-mc-dos"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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