certfr_avis - CERTFR-2020-AVI-611

CERTFR-2020-AVI-611

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	Les routeurs Cisco exécutant IOS XR et configurés pour accepter le protocole de routage multidiffusion à vecteur de distance (Distance Vector Multicast Routing Protocol, DVMRP). Se référer au bulletin de l'éditeur pour obtenir la liste des versions vulnérables. Ces vulnérabilités sont activement exploitées depuis la fin août 2020.

References

Title

Publication Time

Tags

Bulletin de sécurité Cisco cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz du 29 août 2020

None

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Les routeurs Cisco ex\u00e9cutant IOS XR et configur\u00e9s pour accepter le protocole de routage multidiffusion \u00e0 vecteur de distance (Distance Vector Multicast Routing Protocol, DVMRP). Se r\u00e9f\u00e9rer au bulletin de l\u0027\u00e9diteur pour obtenir la liste des versions vuln\u00e9rables. Ces vuln\u00e9rabilit\u00e9s sont activement exploit\u00e9es depuis la fin ao\u00fbt 2020.",
      "product": {
        "name": "IOS XR",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
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  ],
  "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-2020-3569",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-3569"
    },
    {
      "name": "CVE-2020-3566",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-3566"
    }
  ],
  "links": [],
  "reference": "CERTFR-2020-AVI-611",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2020-09-30T00:00:00.000000"
    }
  ],
  "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-iosxr-dvmrp-memexh-dSmpdvfz du 29 ao\u00fbt 2020",
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz"
    }
  ]
}

CVE-2020-3566 (GCVE-0-2020-3566)

Vulnerability from cvelistv5 – Published: 2020-08-29 15:15 – Updated: 2025-10-21 23:35

Summary

A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory of an affected device. The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address this vulnerability.

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-400

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: n/a

Show details on NVD website

JSON

To clipboard

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CVE-2020-3569 (GCVE-0-2020-3569)

Vulnerability from cvelistv5 – Published: 2020-09-23 00:25 – Updated: 2025-10-21 23:35

Summary

Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.

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-400

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: n/a

Show details on NVD website

JSON

To clipboard

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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-2020-AVI-611

Solution

CVE-2020-3566 (GCVE-0-2020-3566)

CVE-2020-3569 (GCVE-0-2020-3569)

Tags

Sightings

Nomenclature