certfr_avis - CERTA-2011-AVI-499

CERTA-2011-AVI-499

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité dans les commutateurs Cisco Nexus 5000 et 3000 series permet à une personne malintentionnée de contourner la politique de sécurité.

Description

Une vulnérabilité dans les commutateurs Cisco Nexus 5000 et 3000 series permet de contourner le rejet du trafic configuré dans les ACL (Access Control Lists).

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	NX-OS	Cisco Nexus 3000 NX-OS Software versions antérieures à la 5.0(3)U1(2a) ou 5.0(3)U2(1).
	Cisco	NX-OS	Cisco Nexus 5000 NX-OS Software versions 5.0(2) et 5.0(3) antérieures à la version 5.0(3)N2(1) ;

References

Title

Publication Time

Tags

Bulletin de sécurité Cisco 20110907-nexus du 07 septembre 2011	None	vendor-advisory
Bulletin de sécurité Cisco 20110907-nexus du 07 septembre 2011 :	-	other

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Cisco Nexus 3000 NX-OS Software versions ant\u00e9rieures \u00e0 la 5.0(3)U1(2a) ou 5.0(3)U2(1).",
      "product": {
        "name": "NX-OS",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    },
    {
      "description": "Cisco Nexus 5000 NX-OS Software versions 5.0(2) et 5.0(3) ant\u00e9rieures \u00e0 la version 5.0(3)N2(1) ;",
      "product": {
        "name": "NX-OS",
        "vendor": {
          "name": "Cisco",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Description\n\nUne vuln\u00e9rabilit\u00e9 dans les commutateurs Cisco Nexus 5000 et 3000 series\npermet de contourner le rejet du trafic configur\u00e9 dans les ACL (Access\nControl Lists).\n\n## 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-2011-2581",
      "url": "https://www.cve.org/CVERecord?id=CVE-2011-2581"
    }
  ],
  "links": [
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco 20110907-nexus du 07 septembre    2011 :",
      "url": "http://www.cisco.com/warp/public/707/cisco-sa-20110907-nexus.shtml"
    }
  ],
  "reference": "CERTA-2011-AVI-499",
  "revisions": [
    {
      "description": "version initiale.",
      "revision_date": "2011-09-08T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 dans les commutateurs Cisco Nexus 5000 et 3000 series\npermet \u00e0 une personne malintentionn\u00e9e de contourner la politique de\ns\u00e9curit\u00e9.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans les commutateurs Cisco Nexus 5000 et 3000 series",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Cisco 20110907-nexus du 07 septembre 2011",
      "url": null
    }
  ]
}

CVE-2011-2581 (GCVE-0-2011-2581)

Vulnerability from cvelistv5 – Published: 2011-09-14 15:00 – Updated: 2024-08-06 23:08

Summary

The ACL implementation in Cisco NX-OS 5.0(2) and 5.0(3) before 5.0(3)N2(1) on Nexus 5000 series switches, and NX-OS before 5.0(3)U1(2a) on Nexus 3000 series switches, does not properly handle comments in conjunction with deny statements, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by sending packets, aka Bug IDs CSCto09813 and CSCtr61490.

Severity ?

No CVSS data available.

CWE

Assigner

cisco

References

URL

Tags

	http://www.securitytracker.com/id?1026019	vdb-entryx_refsource_SECTRACK
	http://www.cisco.com/en/US/products/products_secu…	vendor-advisoryx_refsource_CISCO
	http://secunia.com/advisories/45883	third-party-advisoryx_refsource_SECUNIA

Show details on NVD website

JSON

To clipboard

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            "url": "http://www.securitytracker.com/id?1026019"
          },
          {
            "name": "20110907 Cisco Nexus 5000 and 3000 Series Switches Access Control List Bypass Vulnerability",
            "tags": [
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            "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml"
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            "url": "http://secunia.com/advisories/45883"
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        "title": "CVE Program Container"
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          "ID": "CVE-2011-2581",
          "STATE": "PUBLIC"
        },
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              "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml"
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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

CERTA-2011-AVI-499

Description

Solution

CVE-2011-2581 (GCVE-0-2011-2581)

Tags

Sightings

Nomenclature