cve-2019-1918
Vulnerability from cvelistv5
Published
2019-08-07 21:10
Modified
2024-09-17 03:13
Summary
Cisco IOS XR Software Intermediate System–to–Intermediate System Denial of Service Vulnerability
Impacted products
CiscoCisco IOS XR Software
Show details on NVD website


{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T18:35:51.266Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20190807 Cisco IOS XR Software Intermediate System\u2013to\u2013Intermediate System Denial of Service Vulnerability",
            "tags": [
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              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-iosxr-isis-dos-1918"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XR Software",
          "vendor": "Cisco",
          "versions": [
            {
              "lessThan": "n/a",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
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      "datePublic": "2019-08-07T00:00:00",
      "descriptions": [
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          "lang": "en",
          "value": "A vulnerability in the implementation of Intermediate System\u0026ndash;to\u0026ndash;Intermediate System (IS\u0026ndash;IS) routing protocol functionality in Cisco IOS XR Software could allow an unauthenticated attacker who is in the same IS-IS area to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of IS\u0026ndash;IS link-state protocol data units (PDUs). An attacker could exploit this vulnerability by sending specific link-state PDUs to an affected system to be processed. A successful exploit could allow the attacker to cause incorrect calculations used in the weighted remote shared risk link groups (SRLG) or in the IGP Flexible Algorithm. It could also cause tracebacks to the logs or potentially cause the receiving device to crash the IS\u0026ndash;IS process, resulting in a DoS condition."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.0"
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      "source": {
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        "defect": [
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        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XR Software Intermediate System\u2013to\u2013Intermediate System Denial of Service Vulnerability",
      "x_legacyV4Record": {
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          "DATE_PUBLIC": "2019-08-07T16:00:00-0700",
          "ID": "CVE-2019-1918",
          "STATE": "PUBLIC",
          "TITLE": "Cisco IOS XR Software Intermediate System\u2013to\u2013Intermediate System Denial of Service Vulnerability"
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                      "version": {
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        "exploit": [
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              "name": "20190807 Cisco IOS XR Software Intermediate System\u2013to\u2013Intermediate System Denial of Service Vulnerability",
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          "defect": [
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          "discovery": "INTERNAL"
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  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2019-1918",
    "datePublished": "2019-08-07T21:10:21.824782Z",
    "dateReserved": "2018-12-06T00:00:00",
    "dateUpdated": "2024-09-17T03:13:31.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
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  }
}


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