certfr_avis - CERTFR-2023-AVI-0207

CERTFR-2023-AVI-0207

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité a été découverte dans Cisco IOS XR. Elle permet à un attaquant de provoquer un déni de service à distance et un contournement de la politique de sécurité.

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 versions 7.7.x antérieures à 7.7.1
Cisco	IOS XR	Cisco IOS XR versions 7.1.3 sans le correctif de sécurité asr9k-x64-7.1.3.CSCwc39336
Cisco	IOS XR	Cisco IOS XR versions 7.3.2 sans le correctif de sécurité asr9k-x64-7.3.2.CSCwc39336
Cisco	IOS XR	Cisco IOS XR versions 7.5.x antérieures à 7.5.3
Cisco	IOS XR	Cisco IOS XR versions 7.5.2 sans le correctif de sécurité asr9k-x64-7.5.2.CSCwc39336
Cisco	IOS XR	Cisco IOS XR versions 7.6.x antérieures à 7.6.2

References

Title

Publication Time

Tags

Bulletin de sécurité Cisco IOS XR du 08 mars 2023	None	vendor-advisory
Bulletin de sécurité Cisco du 08 mars 2023	-	other

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco IOS XR versions 7.7.x ant\u00e9rieures \u00e0 7.7.1",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR versions 7.1.3 sans le correctif de s\u00e9curit\u00e9 asr9k-x64-7.1.3.CSCwc39336",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR versions 7.3.2 sans le correctif de s\u00e9curit\u00e9 asr9k-x64-7.3.2.CSCwc39336",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR versions 7.5.x ant\u00e9rieures \u00e0 7.5.3",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR versions 7.5.2 sans le correctif de s\u00e9curit\u00e9 asr9k-x64-7.5.2.CSCwc39336",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco IOS XR versions 7.6.x ant\u00e9rieures \u00e0 7.6.2",
      "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-2023-20049",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-20049"
    }
  ],
  "links": [
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco du 08 mars 2023",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT"
    }
  ],
  "reference": "CERTFR-2023-AVI-0207",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2023-03-09T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Cisco IOS XR. Elle permet \u00e0 un\nattaquant de provoquer un d\u00e9ni de service \u00e0 distance et un contournement\nde la politique de s\u00e9curit\u00e9.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Cisco IOS XR",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco IOS XR du 08 mars 2023",
      "url": null
    }
  ]
}

CVE-2023-20049 (GCVE-0-2023-20049)

Vulnerability from cvelistv5 – Published: 2023-03-09 00:00 – Updated: 2024-10-28 16:33

Summary

A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.

Severity ?

8.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-805

Assigner

cisco

References

URL

Tags

https://sec.cloudapps.cisco.com/security/center/c…

vendor-advisory

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Affected: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:57:35.607Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-20049",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-28T16:24:40.994516Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-28T16:33:14.713Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco IOS XR Software ",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2023-03-08T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. "
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-805",
              "description": "CWE-805",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-09T00:00:00",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20230308 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT"
        }
      ],
      "source": {
        "advisory": "cisco-sa-bfd-XmRescbT",
        "defect": [
          [
            "CSCwc39336"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2023-20049",
    "datePublished": "2023-03-09T00:00:00",
    "dateReserved": "2022-10-27T00:00:00",
    "dateUpdated": "2024-10-28T16:33:14.713Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2023-AVI-0207

Solution

CVE-2023-20049 (GCVE-0-2023-20049)

Tags

Sightings

Nomenclature