certfr_avis - CERTFR-2019-AVI-406

CERTFR-2019-AVI-406

Vulnerability from certfr_avis - Published: - Updated:

De multiples vulnérabilités ont été découvertes dans Cisco IOS XR. Elles permettent à un attaquant de provoquer un déni de service à distance.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

	Vendor	Product	Description
	Cisco	IOS XR	Cisco IOS XR version 6.6.1 sur NC56K sans le correctif de sécurité ncs6k-6.6.1.CSCvq45118.tar
	Cisco	IOS XR	Cisco IOS XR version 6.5.3 sur ASR9000 sans le correctif de sécurité asr9k-px-6.5.3.CSCvq45118

References

Title

Publication Time

Tags

Bulletin de sécurité Cisco cisco-sa-20190807-iosxr-isis-dos-1918 du 07 août 2019	None	vendor-advisory
Bulletin de sécurité Cisco cisco-sa-20190807-iosxr-isis-dos-1910 du 07 août 2019	None	vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco IOS XR version 6.6.1 sur NC56K sans le correctif de s\u00e9curit\u00e9 ncs6k-6.6.1.CSCvq45118.tar",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR version 6.5.3 sur ASR9000 sans le correctif de s\u00e9curit\u00e9 asr9k-px-6.5.3.CSCvq45118",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2019-1910",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-1910"
    },
    {
      "name": "CVE-2019-1918",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-1918"
    }
  ],
  "links": [],
  "reference": "CERTFR-2019-AVI-406",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2019-08-21T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Cisco IOS XR. Elles\npermettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Cisco IOS XR",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-20190807-iosxr-isis-dos-1918 du 07 ao\u00fbt 2019",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-iosxr-isis-dos-1918"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-20190807-iosxr-isis-dos-1910 du 07 ao\u00fbt 2019",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-iosxr-isis-dos-1910"
    }
  ]
}

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

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

Summary

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.

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)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T18:35:51.266Z",
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            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
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            "baseScore": 7.4,
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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      "source": {
        "advisory": "cisco-sa-20190807-iosxr-isis-dos-1918",
        "defect": [
          [
            "CSCvp90854"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XR Software Intermediate System\u2013to\u2013Intermediate System Denial of Service Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "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"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco IOS XR Software",
                      "version": {
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                          {
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                            "version_affected": "\u003c",
                            "version_value": "n/a"
                          }
                        ]
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          ]
        },
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            "baseScore": "7.4",
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          }
        },
        "problemtype": {
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                  "lang": "eng",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2019-1910 (GCVE-0-2019-1910)

Vulnerability from cvelistv5 – Published: 2019-08-07 21:00 – Updated: 2024-11-21 19:18

Summary

A vulnerability in the implementation of the 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 crafted IS–IS link-state protocol data units (PDUs). An attacker could exploit this vulnerability by sending a crafted link-state PDU to an affected system to be processed. A successful exploit could allow the attacker to cause all routers within the IS–IS area to unexpectedly restart the IS–IS process, resulting in a DoS condition. This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XR Software earlier than Release 6.6.3 and are configured with the IS–IS routing protocol. Cisco has confirmed that this vulnerability affects both Cisco IOS XR 32-bit Software and Cisco IOS XR 64-bit Software.

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 , < 6.6.3 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T18:35:52.027Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-iosxr-isis-dos-1910"
          }
        ],
        "title": "CVE Program Container"
      },
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              "content": {
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      },
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    }
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

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

CERTFR-2019-AVI-406

Solution

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

CVE-2019-1910 (GCVE-0-2019-1910)

Tags

Sightings

Nomenclature