fkie_cve-2019-12647
Vulnerability from fkie_nvd
Published
2019-09-25 20:15
Modified
2024-11-21 04:23
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures, leading to a NULL pointer dereference. An attacker could exploit this vulnerability by opening a TCP connection to specific ports and sending traffic over that connection. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dosVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dosVendor Advisory
Impacted products
Vendor Product Version
cisco ios_xe fuji-16.7.1
cisco ios_xe fuji-16.8.1
cisco 1100 -
cisco 4221 -
cisco 4321 -
cisco 4351 -
cisco 4431 -
cisco 4451-x -
cisco asr_1000 -
cisco asr_1001-hx -
cisco asr_1001-x -
cisco asr_1002-hx -
cisco asr_1002-x -
cisco asr_900 -
cisco asr_920-10sz-pd -
cisco asr_920-12cz-a -
cisco asr_920-12cz-d -
cisco asr_920-12sz-im -
cisco asr_920-24sz-im -
cisco asr_920-24sz-m -
cisco asr_920-24tz-m -
cisco asr_920-4sz-a -
cisco asr_920-4sz-d -
cisco cloud_services_router_1000v -
cisco ncs_4201 -
cisco ncs_4202 -
cisco ncs_4206 -
cisco ncs_4216 -
cisco network_convergence_system_520 -


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios_xe:fuji-16.7.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "DF365C26-BBA0-44DE-9822-AC23CDC273A3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xe:fuji-16.8.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "EDF8FE6A-F644-44A9-8422-6C67214B221B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:1100:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC042678-29AA-44F7-BBF0-1D752D25687D",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:4221:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9FCB8187-4527-4EB5-8699-AD706FDF6991",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:4321:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7564AE6-693E-4976-8420-6D1E968DA756",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:4351:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E6A779A8-21BD-4DC9-AA86-F7E6A62BB945",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:4431:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "3703BD40-2107-4255-819B-61E8CFE70DD4",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:4451-x:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "36B8B210-127D-4006-AED5-90E76EEDED93",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_1000:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "91209C16-A620-44A0-9134-8AA456343F29",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7594E307-AC80-41EC-AE94-07E664A7D701",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "09C913FF-63D5-43FB-8B39-598EF436BA5A",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CD2794BD-C8CE-46EF-9857-1723FCF04E46",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "444F688F-79D0-4F22-B530-7BD520080B8F",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_900:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA873342-542E-4FC8-9C22-B5A43F9F3E9D",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-10sz-pd:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "DBE110B5-CC6E-4103-9983-4195BCC28165",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-12cz-a:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "3FE4D129-435B-45DD-838D-4017BD94DF93",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-12cz-d:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "870D5B63-A1D5-442A-B2B9-9E522E5DB08F",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-12sz-im:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "2BD45D77-4097-4AFB-98DF-5B8188316C20",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-24sz-im:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "064DB97B-9E52-45BC-9F43-8FCB5570FC7D",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-24sz-m:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "D989205A-0576-415C-935E-E83AD42FD1CB",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-24tz-m:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "78C3EB40-574A-48F7-A679-90F62ED976B5",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-4sz-a:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "85489F69-EAF0-4971-8C93-36838A8AA00E",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:asr_920-4sz-d:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "2D029B0C-2DAE-491A-90B4-79C093EC9E48",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "4CCB8270-A01D-40A6-BF4B-26BAF65E68F3",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ncs_4201:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "41C5ECF8-EFFE-4C27-8DCB-2533BFD5200F",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ncs_4202:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "68C23248-3D61-4BAF-9602-BA31FB4374DD",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ncs_4206:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "C36494B4-8E2D-4399-97B5-725792BD5C45",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:ncs_4216:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0819EF17-5102-45FF-96AD-85BE17FD6921",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:h:cisco:network_convergence_system_520:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7A35D05-30AC-460F-ADBF-5B7EB0801ACD",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the Ident protocol handler of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability exists because the affected software incorrectly handles memory structures, leading to a NULL pointer dereference. An attacker could exploit this vulnerability by opening a TCP connection to specific ports and sending traffic over that connection. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el manejador del protocolo Ident de los Software Cisco IOS y IOS XE, podr\u00eda permitir a un atacante remoto no autenticado causar la recarga de un dispositivo afectado. La vulnerabilidad se presenta porque el software afectado maneja incorrectamente las estructuras de la memoria, lo que conlleva a una desreferencia del puntero NULL. Un atacante podr\u00eda explotar esta vulnerabilidad abriendo una conexi\u00f3n TCP en puertos espec\u00edficos y mediante el env\u00edo de tr\u00e1fico por medio de \u00e9sta conexi\u00f3n. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar que el dispositivo afectado se recargue, resultando en una condici\u00f3n de denegaci\u00f3n de servicio (DoS)."
    }
  ],
  "id": "CVE-2019-12647",
  "lastModified": "2024-11-21T04:23:15.310",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "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",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.0,
        "source": "psirt@cisco.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-09-25T20:15:10.417",
  "references": [
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dos"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-identd-dos"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.