github - ghsa-29rc-5w3j-4hr7

GHSA-29RC-5W3J-4HR7

Vulnerability from github – Published: 2022-05-24 16:52 – Updated: 2022-05-24 16:52

Details

A vulnerability in the implementation of Intermediate System–to–Intermediate System (IS–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–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–IS process, resulting in a DoS condition.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-1918"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-08-07T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-29rc-5w3j-4hr7",
  "modified": "2022-05-24T16:52:55Z",
  "published": "2022-05-24T16:52:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-1918"
    },
    {
      "type": "WEB",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-iosxr-isis-dos-1918"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2019-1918 (GCVE-0-2019-1918)

Vulnerability from cvelistv5 – Published: 2019-08-07 21:10 – Updated: 2024-11-21 19:18

Summary

Severity ?

7.4 (High)


                        
                          CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-20

Assigner

cisco

References

URL

Tags

https://tools.cisco.com/security/center/content/C…

vendor-advisoryx_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Affected: unspecified , < n/a (custom)

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  "containers": {
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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": [
              "vendor-advisory",
              "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"
      },
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        "metrics": [
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                  },
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                    "Technical Impact": "partial"
                  }
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                "timestamp": "2024-11-21T18:57:38.364227Z",
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        },
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    ],
    "cna": {
      "affected": [
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          "vendor": "Cisco",
          "versions": [
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            "attackVector": "ADJACENT_NETWORK",
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            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
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      },
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      "x_legacyV4Record": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-29RC-5W3J-4HR7

CVE-2019-1918 (GCVE-0-2019-1918)

Tags

Sightings

Nomenclature