CVE-2009-0635 (GCVE-0-2009-0635)

Vulnerability from cvelistv5 – Published: 2009-03-27 16:00 – Updated: 2024-08-07 04:40
VLAI?
Summary
Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-07T04:40:05.127Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml"
          },
          {
            "name": "20090325 Cisco IOS cTCP Denial of Service Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml"
          },
          {
            "name": "34438",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/34438"
          },
          {
            "name": "34246",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/34246"
          },
          {
            "name": "ios-ctcp-dos(49417)",
            "tags": [
              "vdb-entry",
              "x_refsource_XF",
              "x_transferred"
            ],
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49417"
          },
          {
            "name": "1021895",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id?1021895"
          },
          {
            "name": "ADV-2009-0851",
            "tags": [
              "vdb-entry",
              "x_refsource_VUPEN",
              "x_transferred"
            ],
            "url": "http://www.vupen.com/english/advisories/2009/0851"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2009-03-25T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-08-16T14:57:01",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml"
        },
        {
          "name": "20090325 Cisco IOS cTCP Denial of Service Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml"
        },
        {
          "name": "34438",
          "tags": [
            "third-party-advisory",
            "x_refsource_SECUNIA"
          ],
          "url": "http://secunia.com/advisories/34438"
        },
        {
          "name": "34246",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/34246"
        },
        {
          "name": "ios-ctcp-dos(49417)",
          "tags": [
            "vdb-entry",
            "x_refsource_XF"
          ],
          "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49417"
        },
        {
          "name": "1021895",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id?1021895"
        },
        {
          "name": "ADV-2009-0851",
          "tags": [
            "vdb-entry",
            "x_refsource_VUPEN"
          ],
          "url": "http://www.vupen.com/english/advisories/2009/0851"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "ID": "CVE-2009-0635",
          "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": "Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml",
              "refsource": "CONFIRM",
              "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml"
            },
            {
              "name": "20090325 Cisco IOS cTCP Denial of Service Vulnerability",
              "refsource": "CISCO",
              "url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml"
            },
            {
              "name": "34438",
              "refsource": "SECUNIA",
              "url": "http://secunia.com/advisories/34438"
            },
            {
              "name": "34246",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/34246"
            },
            {
              "name": "ios-ctcp-dos(49417)",
              "refsource": "XF",
              "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/49417"
            },
            {
              "name": "1021895",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id?1021895"
            },
            {
              "name": "ADV-2009-0851",
              "refsource": "VUPEN",
              "url": "http://www.vupen.com/english/advisories/2009/0851"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2009-0635",
    "datePublished": "2009-03-27T16:00:00",
    "dateReserved": "2009-02-18T00:00:00",
    "dateUpdated": "2024-08-07T04:40:05.127Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios:12.4t:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"BEAD7398-D1B2-47FB-952D-8C3162D5A363\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios:12.4xz:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"4963A243-74FA-43AD-9645-C9FAD527A6E1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:cisco:ios:12.4ya:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"31C6EACA-35BE-4032-93DA-5F738AEE0F4A\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets.\"}, {\"lang\": \"es\", \"value\": \"Perdida de memoria en la funcionalidad de encapsulado de Cisco Tunneling Control Protocol (cTCP) en Cisco IOS v12.4, cuando se ha habilitado un servidor Easy VPN (conocido como EZVPN), permite a atacantes remotos provocar una denegaci\\u00f3n de servicio (consumo de memoria y ca\\u00edda del dispositivo) mediante una secuencia de paquetes TCP.\"}]",
      "evaluatorSolution": "Per: http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\r\n\r\n\r\nObtaining Fixed Software\r\n\r\nCisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.\r\n\r\nCustomers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco\u0027s software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html , or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml .",
      "id": "CVE-2009-0635",
      "lastModified": "2024-11-21T01:00:34.410",
      "metrics": "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:N/I:N/A:C\", \"baseScore\": 7.1, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 8.6, \"impactScore\": 6.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2009-03-27T16:30:02.077",
      "references": "[{\"url\": \"http://secunia.com/advisories/34438\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/34246\", \"source\": \"ykramarz@cisco.com\"}, {\"url\": \"http://www.securitytracker.com/id?1021895\", \"source\": \"ykramarz@cisco.com\"}, {\"url\": \"http://www.vupen.com/english/advisories/2009/0851\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://exchange.xforce.ibmcloud.com/vulnerabilities/49417\", \"source\": \"ykramarz@cisco.com\"}, {\"url\": \"http://secunia.com/advisories/34438\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"http://www.securityfocus.com/bid/34246\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.securitytracker.com/id?1021895\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"http://www.vupen.com/english/advisories/2009/0851\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://exchange.xforce.ibmcloud.com/vulnerabilities/49417\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-399\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2009-0635\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2009-03-27T16:30:02.077\",\"lastModified\":\"2025-04-09T00:30:58.490\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets.\"},{\"lang\":\"es\",\"value\":\"Perdida de memoria en la funcionalidad de encapsulado de Cisco Tunneling Control Protocol (cTCP) en Cisco IOS v12.4, cuando se ha habilitado un servidor Easy VPN (conocido como EZVPN), permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de memoria y ca\u00edda del dispositivo) mediante una secuencia de paquetes TCP.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:C\",\"baseScore\":7.1,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":8.6,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-399\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios:12.4t:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BEAD7398-D1B2-47FB-952D-8C3162D5A363\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios:12.4xz:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4963A243-74FA-43AD-9645-C9FAD527A6E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:cisco:ios:12.4ya:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"31C6EACA-35BE-4032-93DA-5F738AEE0F4A\"}]}]}],\"references\":[{\"url\":\"http://secunia.com/advisories/34438\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/34246\",\"source\":\"psirt@cisco.com\"},{\"url\":\"http://www.securitytracker.com/id?1021895\",\"source\":\"psirt@cisco.com\"},{\"url\":\"http://www.vupen.com/english/advisories/2009/0851\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/49417\",\"source\":\"psirt@cisco.com\"},{\"url\":\"http://secunia.com/advisories/34438\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/34246\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securitytracker.com/id?1021895\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.vupen.com/english/advisories/2009/0851\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://exchange.xforce.ibmcloud.com/vulnerabilities/49417\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}],\"evaluatorSolution\":\"Per: http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml\\r\\n\\r\\n\\r\\nObtaining Fixed Software\\r\\n\\r\\nCisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.\\r\\n\\r\\nCustomers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco\u0027s software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html , or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml .\"}}"
  }
}


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 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.