cve-2011-2581
Vulnerability from cvelistv5
Published
2011-09-14 15:00
Modified
2024-08-06 23:08
Severity ?
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.
References
ykramarz@cisco.comhttp://secunia.com/advisories/45883
ykramarz@cisco.comhttp://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtmlVendor Advisory
ykramarz@cisco.comhttp://www.securitytracker.com/id?1026019
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/45883
af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id?1026019
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T23:08:23.145Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "1026019",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id?1026019"
          },
          {
            "name": "20110907 Cisco Nexus 5000 and 3000 Series Switches Access Control List Bypass Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml"
          },
          {
            "name": "45883",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/45883"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2011-09-07T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2011-10-06T09:00:00",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "1026019",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id?1026019"
        },
        {
          "name": "20110907 Cisco Nexus 5000 and 3000 Series Switches Access Control List Bypass Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml"
        },
        {
          "name": "45883",
          "tags": [
            "third-party-advisory",
            "x_refsource_SECUNIA"
          ],
          "url": "http://secunia.com/advisories/45883"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "ID": "CVE-2011-2581",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "1026019",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id?1026019"
            },
            {
              "name": "20110907 Cisco Nexus 5000 and 3000 Series Switches Access Control List Bypass Vulnerability",
              "refsource": "CISCO",
              "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml"
            },
            {
              "name": "45883",
              "refsource": "SECUNIA",
              "url": "http://secunia.com/advisories/45883"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2011-2581",
    "datePublished": "2011-09-14T15:00:00",
    "dateReserved": "2011-06-27T00:00:00",
    "dateUpdated": "2024-08-06T23:08:23.145Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cisco:nx-os:5.0\\\\(2\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"464FDB26-D6B4-41A4-83F4-8C7D21F3AC51\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"BD01F15F-2465-4998-A6F7-AD9D4B3468AB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1a\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"3709E352-CEEC-402A-BEF8-3E5A5646DA6E\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1b\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"023C7483-94B7-47AC-AB57-978A57D85148\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"16131960-37FE-4154-A82C-E3249B066DC4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1c\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B4B91092-DE54-4591-9C0F-A22A04AB71E9\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"FFB04F2B-04E2-4EB1-83BA-4F7537AF1099\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"5.0\\\\(3\\\\)u1\\\\(2\\\\)\", \"matchCriteriaId\": \"4BD515AB-ECE5-480F-AA30-172CF4161834\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1a\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"F8C124BA-D5FC-422A-B3F4-AC1A41B7EEE3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1b\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"F358E8D0-624B-412A-8726-B8AF96156317\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1d\\\\):*:*:*:*:*:*:*\", \"matchCriteriaId\": \"17A4CE07-64FF-4C5C-81FF-A2388818CF7F\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:h:cisco:nexus_3000:*:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"61F9825B-DD64-4E38-9AE0-F87C210ADD9D\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"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.\"}, {\"lang\": \"es\", \"value\": \"La implementaci\\u00f3n de ACL en Cisco NX-OS   v5.0(2) y v5.0(3) antes de 5.0(3)N2(1) en los switches Nexus serie 5000 y NX-OS antes de 5.0(3)U1(2a) en los switches Nexus serie 3000, no maneja adecuadamente los comentarios en las declaraciones negadas, lo que permite a atacantes remotos evitar las restricciones de acceso previsto en circunstancias oportunas mediante el env\\u00edo de paquetes. Se trata de un problema tambi\\u00e9n conocido como Bug ID CSCto09813 y CSCtr61490.\"}]",
      "id": "CVE-2011-2581",
      "lastModified": "2024-11-21T01:28:31.550",
      "metrics": "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:N/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2011-09-14T16:05:23.603",
      "references": "[{\"url\": \"http://secunia.com/advisories/45883\", \"source\": \"ykramarz@cisco.com\"}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://www.securitytracker.com/id?1026019\", \"source\": \"ykramarz@cisco.com\"}, {\"url\": \"http://secunia.com/advisories/45883\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://www.securitytracker.com/id?1026019\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-264\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2011-2581\",\"sourceIdentifier\":\"ykramarz@cisco.com\",\"published\":\"2011-09-14T16:05:23.603\",\"lastModified\":\"2024-11-21T01:28:31.550\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"},{\"lang\":\"es\",\"value\":\"La implementaci\u00f3n de ACL en Cisco NX-OS   v5.0(2) y v5.0(3) antes de 5.0(3)N2(1) en los switches Nexus serie 5000 y NX-OS antes de 5.0(3)U1(2a) en los switches Nexus serie 3000, no maneja adecuadamente los comentarios en las declaraciones negadas, lo que permite a atacantes remotos evitar las restricciones de acceso previsto en circunstancias oportunas mediante el env\u00edo de paquetes. Se trata de un problema tambi\u00e9n conocido como Bug ID CSCto09813 y CSCtr61490.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-264\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:nx-os:5.0\\\\(2\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"464FDB26-D6B4-41A4-83F4-8C7D21F3AC51\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BD01F15F-2465-4998-A6F7-AD9D4B3468AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1a\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3709E352-CEEC-402A-BEF8-3E5A5646DA6E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1b\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"023C7483-94B7-47AC-AB57-978A57D85148\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"16131960-37FE-4154-A82C-E3249B066DC4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)n1\\\\(1c\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B4B91092-DE54-4591-9C0F-A22A04AB71E9\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FFB04F2B-04E2-4EB1-83BA-4F7537AF1099\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"5.0\\\\(3\\\\)u1\\\\(2\\\\)\",\"matchCriteriaId\":\"4BD515AB-ECE5-480F-AA30-172CF4161834\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1a\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F8C124BA-D5FC-422A-B3F4-AC1A41B7EEE3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1b\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F358E8D0-624B-412A-8726-B8AF96156317\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:nx-os:5.0\\\\(3\\\\)u1\\\\(1d\\\\):*:*:*:*:*:*:*\",\"matchCriteriaId\":\"17A4CE07-64FF-4C5C-81FF-A2388818CF7F\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:h:cisco:nexus_3000:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"61F9825B-DD64-4E38-9AE0-F87C210ADD9D\"}]}]}],\"references\":[{\"url\":\"http://secunia.com/advisories/45883\",\"source\":\"ykramarz@cisco.com\"},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml\",\"source\":\"ykramarz@cisco.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.securitytracker.com/id?1026019\",\"source\":\"ykramarz@cisco.com\"},{\"url\":\"http://secunia.com/advisories/45883\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080b9250c.shtml\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.securitytracker.com/id?1026019\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.